Tuning kit for glc 300?
Thread Starter
Junior Member
Joined: Sep 2016
Posts: 15
Likes: 7
GLC 300
Tuning kit for glc 300?
Wondering if anyone has invested in a plug and play tuning kit for their glc? Interested to see what kind of power increase you got and if it's worth the 1k price tag
Member
Joined: Jan 2014
Posts: 142
Likes: 31
From: Orlando, FL
E300, C63
I'm sure all that happens is:
1. you gain a couple horsepower
2. you lose the drivability engineers spent countless hours perfecting
3. you lose fuel economy
4. you lose $1,000
5. you lose your powertrain warranty
other than that, it probably kicks ***!!
1. you gain a couple horsepower
2. you lose the drivability engineers spent countless hours perfecting
3. you lose fuel economy
4. you lose $1,000
5. you lose your powertrain warranty
other than that, it probably kicks ***!!
Thread Starter
Junior Member
Joined: Sep 2016
Posts: 15
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GLC 300
this is the link: https://tdi-tuning.com/car/mercedes-benz/glc/300-cgi-4matic-241-bhp-244-ps-179-kw/crtd4-multi-channel-petrol-tuning-box-chip
Super Member
Joined: Jan 2014
Posts: 761
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From: right to be forgotten
right to be forgotten
I've had a DTE Systems (German TuV tested and certified) FSR box in my Golf R for 26,000 miles now. Works brilliantly. Prior to that I had for 36,000 miles a CRD box on my diesel Nissan pickup truck, absolutely faultless. I had that one with and without on the rolling road and got it from 169 upto 214. Sustained measured mpg improvement was 24.7%.
When DTUK send me my FSR for the Golf R they also send me a pedal box. I was alwas sceptical about those, but after I fitted it I kept it, and paid for it. Not only that, I also got one for our Mercedes GL which made that awful 7G gearbox a bit more bearable and generally more responsive.
I would go for it.
When DTUK send me my FSR for the Golf R they also send me a pedal box. I was alwas sceptical about those, but after I fitted it I kept it, and paid for it. Not only that, I also got one for our Mercedes GL which made that awful 7G gearbox a bit more bearable and generally more responsive.
I would go for it.
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From: Springboro, OH
16 GLC 19 Volvo XC40 06Corvette Z06
If one is wise he/she will pay attention what ec is saying.
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Joined: Feb 2013
Posts: 533
Likes: 240
From: Pennsylvania
2021 GLE450
I'm not for one minute suggesting an aftermarket tune is a good idea, but in most cases, drivability and fuel efficiency both improve. Unfortunately, they do so at the expense of a dirtier tailpipe. VW essentially offered an aftermarket tune at the factory specifically to improve throttle response and real world efficiency, then found a way to hide it during emissions testing.
Last edited by HotRodW; Sep 20, 2016 at 11:51 PM.
Super Member
Joined: Jan 2014
Posts: 761
Likes: 90
From: right to be forgotten
right to be forgotten
I'm not for one minute suggesting an aftermarket tune is a good idea, but in most cases, drivability and fuel efficiency both improve. Unfortunately, they do so at the expense of a dirtier tailpipe. VW essentially offered an aftermarket tune at the factory specifically to improve throttle response and real world efficiency, then found a way to hide it during emissions testing.
As I said the DTE Systems ones are TuV certified, some of the worlds most stringest testing.
And yes they spend lots of time tuning, doesn't mean they get it right to suit everyone and every region. There is a lot left to improved upon. Man you should she the A45 gang here in the UK they run nearly all with a tune, that engine is just asking for it. And I can imagine (they don't do the glc300 where I live so I have to), but that that little 4 cylinder turbo charged engine can do a lot more. Just like it is known that the 3.0TT has a lot of head room.
There is always a risk, that is the game of tuning. One I'm happy to make with DTE Systems boxes.
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From: right to be forgotten
right to be forgotten
Based upon what?
1. Yes you gain a lot of horsepower and torque
2. No you don't loose driveability at all, you gain a lot of responsiveness and I would say for a low powered vehicle like the GLC300 you gain a lot in driveability.
3. You don't loose fuel economy, you generally gain a little. Fair enough not as much for a petrol turbo vehicle but a lot for a diesel.
4. No you don't loose your $1000, in fact it doesn't cost that much, but also you can resell it afterwards. I normally got about 3/4 back after three years using it.
5. Yes you do, I agree, that is a risk you take if it turns out to be an issue related to that.
1. Yes you gain a lot of horsepower and torque
2. No you don't loose driveability at all, you gain a lot of responsiveness and I would say for a low powered vehicle like the GLC300 you gain a lot in driveability.
3. You don't loose fuel economy, you generally gain a little. Fair enough not as much for a petrol turbo vehicle but a lot for a diesel.
4. No you don't loose your $1000, in fact it doesn't cost that much, but also you can resell it afterwards. I normally got about 3/4 back after three years using it.
5. Yes you do, I agree, that is a risk you take if it turns out to be an issue related to that.
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Junior Member
Joined: Jul 2016
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GLC300 SQ%5
You gain everything from a tune. I have a SQ5 with a pulley and a tune and not only did the driveability increase but so did the fuel economy (not that I care though). Factory ecu tunes accomodate all regions and fuel types and include a large margin of safety. Screw the warranty and tune it if you can.
Member
Joined: Jan 2014
Posts: 142
Likes: 31
From: Orlando, FL
E300, C63
everyone is posting their tuning experience based on "performance" vehicles. I have a lot of firsthand experience with tuned performance vehicles, as well as the basic economy vehicles (i.e. the GLC300) and it is lightyears different.
I have tuned all of my Camaros myself, as well as a handful of other vehicles, however they are much simpler than Benz as they are pushrod V8's with traditional fuel injection.
There is a huge market for tuning AMG's, corvettes, performance turbo/supercharged vehicles, etc. Therefore tuners spend a lot of time perfecting these tunes.
Those tunes also cost thousands (for good ones) or less if it's tuned directly by a tuner.
If you really think the same amount of effort is going into these $500/$1000 tunes for your economy cars you're sorely mistaken. You will gain little if any power, and your car will drive like crap. I can't tell you how many M271, M272, M273, etc cars I have flashed back to factory for customers because of how unhappy they are with their renntech/misc tune.
Also, I have replaced quite a few engines because of these garbage piggyback or OBD plug ins that cause detonation and destroy engines. Even these non-AMG engines start at over $12,000, and it's not warranty. If anyone tells you that you can unplug it and it doesn't leave a trace, they clearly don't know what they are talking about.
For less than $1,000 you can put a set of Michelin pilot super sports on and wake the truck up way more than a junk *** tune. But to each his own, I suppose!
I have tuned all of my Camaros myself, as well as a handful of other vehicles, however they are much simpler than Benz as they are pushrod V8's with traditional fuel injection.
There is a huge market for tuning AMG's, corvettes, performance turbo/supercharged vehicles, etc. Therefore tuners spend a lot of time perfecting these tunes.
Those tunes also cost thousands (for good ones) or less if it's tuned directly by a tuner.
If you really think the same amount of effort is going into these $500/$1000 tunes for your economy cars you're sorely mistaken. You will gain little if any power, and your car will drive like crap. I can't tell you how many M271, M272, M273, etc cars I have flashed back to factory for customers because of how unhappy they are with their renntech/misc tune.
Also, I have replaced quite a few engines because of these garbage piggyback or OBD plug ins that cause detonation and destroy engines. Even these non-AMG engines start at over $12,000, and it's not warranty. If anyone tells you that you can unplug it and it doesn't leave a trace, they clearly don't know what they are talking about.
For less than $1,000 you can put a set of Michelin pilot super sports on and wake the truck up way more than a junk *** tune. But to each his own, I suppose!
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Joined: Jan 2014
Posts: 761
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From: right to be forgotten
right to be forgotten
everyone is posting their tuning experience based on "performance" vehicles. I have a lot of firsthand experience with tuned performance vehicles, as well as the basic economy vehicles (i.e. the GLC300) and it is lightyears different.
I have tuned all of my Camaros myself, as well as a handful of other vehicles, however they are much simpler than Benz as they are pushrod V8's with traditional fuel injection.
There is a huge market for tuning AMG's, corvettes, performance turbo/supercharged vehicles, etc. Therefore tuners spend a lot of time perfecting these tunes.
Those tunes also cost thousands (for good ones) or less if it's tuned directly by a tuner.
If you really think the same amount of effort is going into these $500/$1000 tunes for your economy cars you're sorely mistaken. You will gain little if any power, and your car will drive like crap. I can't tell you how many M271, M272, M273, etc cars I have flashed back to factory for customers because of how unhappy they are with their renntech/misc tune.
Also, I have replaced quite a few engines because of these garbage piggyback or OBD plug ins that cause detonation and destroy engines. Even these non-AMG engines start at over $12,000, and it's not warranty. If anyone tells you that you can unplug it and it doesn't leave a trace, they clearly don't know what they are talking about.
For less than $1,000 you can put a set of Michelin pilot super sports on and wake the truck up way more than a junk *** tune. But to each his own, I suppose!
I have tuned all of my Camaros myself, as well as a handful of other vehicles, however they are much simpler than Benz as they are pushrod V8's with traditional fuel injection.
There is a huge market for tuning AMG's, corvettes, performance turbo/supercharged vehicles, etc. Therefore tuners spend a lot of time perfecting these tunes.
Those tunes also cost thousands (for good ones) or less if it's tuned directly by a tuner.
If you really think the same amount of effort is going into these $500/$1000 tunes for your economy cars you're sorely mistaken. You will gain little if any power, and your car will drive like crap. I can't tell you how many M271, M272, M273, etc cars I have flashed back to factory for customers because of how unhappy they are with their renntech/misc tune.
Also, I have replaced quite a few engines because of these garbage piggyback or OBD plug ins that cause detonation and destroy engines. Even these non-AMG engines start at over $12,000, and it's not warranty. If anyone tells you that you can unplug it and it doesn't leave a trace, they clearly don't know what they are talking about.
For less than $1,000 you can put a set of Michelin pilot super sports on and wake the truck up way more than a junk *** tune. But to each his own, I suppose!
Member
Joined: Jan 2014
Posts: 142
Likes: 31
From: Orlando, FL
E300, C63
Fully agree that there is a lot of crap out there; sold via ebay and direct online channels. However there are some very good and respectable systems out there as well. As I said some of them are TuV tested. Really good systems indeed. I guess we have very different experiences.
Super Member
Joined: Jan 2014
Posts: 761
Likes: 90
From: right to be forgotten
right to be forgotten
I live in a wet and cold country, there is a lovely low lying very cold yet very dry drag strip in Scotland where some great times are set.
Also got some nice Shell Nitro+ RON98 available in every gas station, an Tesco do some RON99 although you need to have a busy garage because I've once had some old stuff from them which really held back my current engine. So I tend to still with Shell.
We can just "feel" the engines wanting and able to do more
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Joined: Feb 2016
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From: Portland, OR
C450, GLC43
Super Member
Joined: Jan 2014
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From: right to be forgotten
right to be forgotten
Member
Joined: Apr 2016
Posts: 91
Likes: 7
2016 GLC 300 4Matic
concur w EC. if you damage the engine, which is a possibility because you will be driving it harder and it was not designed for such, it will void the warranty. You could expect to pay 20,000 or more for an engine rebuild if there is a catastrophic failure. The chip/tuning box can be traced even after removed from the engine by a good MB mechanic. They can go back in the ecu and see where the engine exceeded the design parameters and that cannot be done on a stock engine/ecu.
I think the high quality tuners such as VR, Carlsson, Brabus, Renntech etc are just that, high quality, but none will give you a warranty if the engine blows. You have to ask yourself, do you have 20 K available if the engine blows?
I think the high quality tuners such as VR, Carlsson, Brabus, Renntech etc are just that, high quality, but none will give you a warranty if the engine blows. You have to ask yourself, do you have 20 K available if the engine blows?
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Joined: Aug 2016
Posts: 55
Likes: 2
GLC300
Dinan now offers an ECU tune for the 2.0L turbo as equipped in the X253.
Given the attractive price (around $300), Dinan's good reputation, and the fact that it's a U.S. based tuner, I'm tempted to give this one a go.
Anyone with experience please share your thoughts.
Link to Dinan's X253 tune:
http://www.dinancars.com/product/d44...?series=&mid=/
Given the attractive price (around $300), Dinan's good reputation, and the fact that it's a U.S. based tuner, I'm tempted to give this one a go.
Anyone with experience please share your thoughts.
Link to Dinan's X253 tune:
http://www.dinancars.com/product/d44...?series=&mid=/
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A gaggle of MB's
My comments are based on US/North America - and not eu.
1) ECU "tune" only voids MBUSA warranty on the ecu - and frankly I have not personally seen and legitimate sustantive performance upgrades here in US with the Euro add-on boxes.
2) ECU tune does not void MBUSA powertrain warranty - that is prohibited under Federal law - the exception of note is for the AMG 7G powertrains where is you blow your tranny because you put over 650bhp - that the tranny was never claimed or designed to tolerate that bhp.
3) On ECU "tunes" - there are plenty of software shops that will offer tunes - but frankly when it comes to integration of the tune so as not to trip system CEL's - the only source that I have had personal experience with - that will backup-their-claim for no CEL's - is RennTech. My personal experience is mirrored by a decent # of Mercedes dealers in major metro markets that do order/installed RennTech products for their performance seeking customers. I don't know of another tune house that is handled by select MB dealerships.
4) Would I choose to do downpipes on a GLC300 - heck now - I'd take that money and a bit more and order/buy a GLC43.
On a GLC RennTech tune - give them a call during normal business hrs Mon-Fri and ask them where they are at in development/release.
Keep the beat !
1) ECU "tune" only voids MBUSA warranty on the ecu - and frankly I have not personally seen and legitimate sustantive performance upgrades here in US with the Euro add-on boxes.
2) ECU tune does not void MBUSA powertrain warranty - that is prohibited under Federal law - the exception of note is for the AMG 7G powertrains where is you blow your tranny because you put over 650bhp - that the tranny was never claimed or designed to tolerate that bhp.
3) On ECU "tunes" - there are plenty of software shops that will offer tunes - but frankly when it comes to integration of the tune so as not to trip system CEL's - the only source that I have had personal experience with - that will backup-their-claim for no CEL's - is RennTech. My personal experience is mirrored by a decent # of Mercedes dealers in major metro markets that do order/installed RennTech products for their performance seeking customers. I don't know of another tune house that is handled by select MB dealerships.
4) Would I choose to do downpipes on a GLC300 - heck now - I'd take that money and a bit more and order/buy a GLC43.
On a GLC RennTech tune - give them a call during normal business hrs Mon-Fri and ask them where they are at in development/release.
Keep the beat !
Super Member
Joined: Jan 2014
Posts: 761
Likes: 90
From: right to be forgotten
right to be forgotten
My comments are based on US/North America - and not eu.
1) ECU "tune" only voids MBUSA warranty on the ecu - and frankly I have not personally seen and legitimate sustantive performance upgrades here in US with the Euro add-on boxes.
2) ECU tune does not void MBUSA powertrain warranty - that is prohibited under Federal law - the exception of note is for the AMG 7G powertrains where is you blow your tranny because you put over 650bhp - that the tranny was never claimed or designed to tolerate that bhp.
3) On ECU "tunes" - there are plenty of software shops that will offer tunes - but frankly when it comes to integration of the tune so as not to trip system CEL's - the only source that I have had personal experience with - that will backup-their-claim for no CEL's - is RennTech. My personal experience is mirrored by a decent # of Mercedes dealers in major metro markets that do order/installed RennTech products for their performance seeking customers. I don't know of another tune house that is handled by select MB dealerships.
4) Would I choose to do downpipes on a GLC300 - heck now - I'd take that money and a bit more and order/buy a GLC43.
On a GLC RennTech tune - give them a call during normal business hrs Mon-Fri and ask them where they are at in development/release.
Keep the beat !
1) ECU "tune" only voids MBUSA warranty on the ecu - and frankly I have not personally seen and legitimate sustantive performance upgrades here in US with the Euro add-on boxes.
2) ECU tune does not void MBUSA powertrain warranty - that is prohibited under Federal law - the exception of note is for the AMG 7G powertrains where is you blow your tranny because you put over 650bhp - that the tranny was never claimed or designed to tolerate that bhp.
3) On ECU "tunes" - there are plenty of software shops that will offer tunes - but frankly when it comes to integration of the tune so as not to trip system CEL's - the only source that I have had personal experience with - that will backup-their-claim for no CEL's - is RennTech. My personal experience is mirrored by a decent # of Mercedes dealers in major metro markets that do order/installed RennTech products for their performance seeking customers. I don't know of another tune house that is handled by select MB dealerships.
4) Would I choose to do downpipes on a GLC300 - heck now - I'd take that money and a bit more and order/buy a GLC43.
On a GLC RennTech tune - give them a call during normal business hrs Mon-Fri and ask them where they are at in development/release.
Keep the beat !
Member
Joined: Apr 2016
Posts: 91
Likes: 7
2016 GLC 300 4Matic
My comments are based on US/North America - and not eu.
1) ECU "tune" only voids MBUSA warranty on the ecu - and frankly I have not personally seen and legitimate sustantive performance upgrades here in US with the Euro add-on boxes.
2) ECU tune does not void MBUSA powertrain warranty - that is prohibited under Federal law - the exception of note is for the AMG 7G powertrains where is you blow your tranny because you put over 650bhp - that the tranny was never claimed or designed to tolerate that bhp.
3) On ECU "tunes" - there are plenty of software shops that will offer tunes - but frankly when it comes to integration of the tune so as not to trip system CEL's - the only source that I have had personal experience with - that will backup-their-claim for no CEL's - is RennTech. My personal experience is mirrored by a decent # of Mercedes dealers in major metro markets that do order/installed RennTech products for their performance seeking customers. I don't know of another tune house that is handled by select MB dealerships.
4) Would I choose to do downpipes on a GLC300 - heck now - I'd take that money and a bit more and order/buy a GLC43.
On a GLC RennTech tune - give them a call during normal business hrs Mon-Fri and ask them where they are at in development/release.
Keep the beat !
1) ECU "tune" only voids MBUSA warranty on the ecu - and frankly I have not personally seen and legitimate sustantive performance upgrades here in US with the Euro add-on boxes.
2) ECU tune does not void MBUSA powertrain warranty - that is prohibited under Federal law - the exception of note is for the AMG 7G powertrains where is you blow your tranny because you put over 650bhp - that the tranny was never claimed or designed to tolerate that bhp.
3) On ECU "tunes" - there are plenty of software shops that will offer tunes - but frankly when it comes to integration of the tune so as not to trip system CEL's - the only source that I have had personal experience with - that will backup-their-claim for no CEL's - is RennTech. My personal experience is mirrored by a decent # of Mercedes dealers in major metro markets that do order/installed RennTech products for their performance seeking customers. I don't know of another tune house that is handled by select MB dealerships.
4) Would I choose to do downpipes on a GLC300 - heck now - I'd take that money and a bit more and order/buy a GLC43.
On a GLC RennTech tune - give them a call during normal business hrs Mon-Fri and ask them where they are at in development/release.
Keep the beat !
#1 re-flashing the ecu does not violate the warranty, BUT, if there is an engine failure the warranty will not cover the damage.
#2, re-flashing the ecu, againk does not violate the warranty but again, if there is an engine failure, the warranty will not cover the damage and you will pay out off pocket, maybe 20 K, depending upon the extent of damage.
There is no federal law that protects your warranty if you add after market modifications and please do not invoke Magnuson Moss, if that is what you are implying.
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Joined: Nov 2012
Posts: 6,130
Likes: 1,117
A gaggle of MB's
I have between 15-20 customers a year that choose ECU upgraded - and I would LOVE too offer my select customers a $1000 ECU upgrade on their MB.
However (1) CEL's and (2) tune problems problems with the non-RennTech tuners are the reason I know will ONLY recommmend RennTech now.
On my side I have a very good 20yr personal relationship with RennTech on my personal performance MB's - however it was the unforeseen problems with the other "bucket" tuners with my customers which ONLY reason for my RennTech recommendation.
1) If you modify/reprogram the ECU - then with that tune in place - you void the warranty on the ECU.
2) I have seen tuners flash a MB ECU - and with install flash error - "freeze" the ECU - yes - warranty on that ECU is void. Fortunately - factory flash restored the ECU in these cases.
3) "Most" MB ECU's are "boxed" - and a tuner outside the area will instruct you to remove the box and send it to them - they drill a small hole to open the box - and - yes - with hole - evidence the box has been opened - the warranty is void on the ECU
4) I have seen one case under #3 - where a tuner outside the area was sent the same boxed ECU three times to try to correct tuning error which set off CEL's - on that 4th reflash - the very experienced Texas tuner shop FRIED the ECU - FRIED meaning the ECU will not accept factory reflash - that shop did pay for a replacement ECU - which frankly is very good on their part - since most non-RennTech tuner shops will not take responsibility to replace the the ECU.
However (1) CEL's and (2) tune problems problems with the non-RennTech tuners are the reason I know will ONLY recommmend RennTech now.
On my side I have a very good 20yr personal relationship with RennTech on my personal performance MB's - however it was the unforeseen problems with the other "bucket" tuners with my customers which ONLY reason for my RennTech recommendation.
1) If you modify/reprogram the ECU - then with that tune in place - you void the warranty on the ECU.
2) I have seen tuners flash a MB ECU - and with install flash error - "freeze" the ECU - yes - warranty on that ECU is void. Fortunately - factory flash restored the ECU in these cases.
3) "Most" MB ECU's are "boxed" - and a tuner outside the area will instruct you to remove the box and send it to them - they drill a small hole to open the box - and - yes - with hole - evidence the box has been opened - the warranty is void on the ECU
4) I have seen one case under #3 - where a tuner outside the area was sent the same boxed ECU three times to try to correct tuning error which set off CEL's - on that 4th reflash - the very experienced Texas tuner shop FRIED the ECU - FRIED meaning the ECU will not accept factory reflash - that shop did pay for a replacement ECU - which frankly is very good on their part - since most non-RennTech tuner shops will not take responsibility to replace the the ECU.
Member
Joined: Apr 2016
Posts: 91
Likes: 7
2016 GLC 300 4Matic
I have between 15-20 customers a year that choose ECU upgraded - and I would LOVE too offer my select customers a $1000 ECU upgrade on their MB.
However (1) CEL's and (2) tune problems problems with the non-RennTech tuners are the reason I know will ONLY recommmend RennTech now.
On my side I have a very good 20yr personal relationship with RennTech on my personal performance MB's - however it was the unforeseen problems with the other "bucket" tuners with my customers which ONLY reason for my RennTech recommendation.
1) If you modify/reprogram the ECU - then with that tune in place - you void the warranty on the ECU.
2) I have seen tuners flash a MB ECU - and with install flash error - "freeze" the ECU - yes - warranty on that ECU is void. Fortunately - factory flash restored the ECU in these cases.
3) "Most" MB ECU's are "boxed" - and a tuner outside the area will instruct you to remove the box and send it to them - they drill a small hole to open the box - and - yes - with hole - evidence the box has been opened - the warranty is void on the ECU
4) I have seen one case under #3 - where a tuner outside the area was sent the same boxed ECU three times to try to correct tuning error which set off CEL's - on that 4th reflash - the very experienced Texas tuner shop FRIED the ECU - FRIED meaning the ECU will not accept factory reflash - that shop did pay for a replacement ECU - which frankly is very good on their part - since most non-RennTech tuner shops will not take responsibility to replace the the ECU.
However (1) CEL's and (2) tune problems problems with the non-RennTech tuners are the reason I know will ONLY recommmend RennTech now.
On my side I have a very good 20yr personal relationship with RennTech on my personal performance MB's - however it was the unforeseen problems with the other "bucket" tuners with my customers which ONLY reason for my RennTech recommendation.
1) If you modify/reprogram the ECU - then with that tune in place - you void the warranty on the ECU.
2) I have seen tuners flash a MB ECU - and with install flash error - "freeze" the ECU - yes - warranty on that ECU is void. Fortunately - factory flash restored the ECU in these cases.
3) "Most" MB ECU's are "boxed" - and a tuner outside the area will instruct you to remove the box and send it to them - they drill a small hole to open the box - and - yes - with hole - evidence the box has been opened - the warranty is void on the ECU
4) I have seen one case under #3 - where a tuner outside the area was sent the same boxed ECU three times to try to correct tuning error which set off CEL's - on that 4th reflash - the very experienced Texas tuner shop FRIED the ECU - FRIED meaning the ECU will not accept factory reflash - that shop did pay for a replacement ECU - which frankly is very good on their part - since most non-RennTech tuner shops will not take responsibility to replace the the ECU.
