Renntech tune on the way.
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C63 AMG
Renntech tune on the way.
I just ordered a new ECU from the dealership so I have the stock one and a tuned one to switch when I go in for servicing.
Im sending the second ECU to Renntech for the second tune package they offer, 511hp.
I will be getting the secondary cats removed, which Renntech said is good for another 10hp.
I will update this thread once the ECU is returned to me and give you my impressions.
I've gone through 5 sets of rear tires and 1 front set in 18000KM. I drive the **** out of this car. I've gone to the track drifting and 1/4times in it so I will try give my best details of how its changed. If the change isn't enough for me, I may add the MHP long tube headers to this tune to see how they will add power.
Should be about a week or so from now when I get the tuned ecu back.
Im sending the second ECU to Renntech for the second tune package they offer, 511hp.
I will be getting the secondary cats removed, which Renntech said is good for another 10hp.
I will update this thread once the ECU is returned to me and give you my impressions.
I've gone through 5 sets of rear tires and 1 front set in 18000KM. I drive the **** out of this car. I've gone to the track drifting and 1/4times in it so I will try give my best details of how its changed. If the change isn't enough for me, I may add the MHP long tube headers to this tune to see how they will add power.
Should be about a week or so from now when I get the tuned ecu back.
Super Member
Joined: Jul 2009
Posts: 520
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From: Toronto
2014 Lotus Evora S
Congrats. You may want to also remove the charcoal filters at the same time.
When I did K1, I thought about the second ECU too which is the way to go to be super safe with service and warranty. As Cory at Kleemann has backed up my original ECU, I could always decide to do that later. I'll wait until my first service (in 8,000 km or so) to see how it goes with the dealership.
Keep us posted!
When I did K1, I thought about the second ECU too which is the way to go to be super safe with service and warranty. As Cory at Kleemann has backed up my original ECU, I could always decide to do that later. I'll wait until my first service (in 8,000 km or so) to see how it goes with the dealership.
Keep us posted!
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From: NY
See Sig
I just ordered a new ECU from the dealership so I have the stock one and a tuned one to switch when I go in for servicing.
Im sending the second ECU to Renntech for the second tune package they offer, 511hp.
I will be getting the secondary cats removed, which Renntech said is good for another 10hp.
I will update this thread once the ECU is returned to me and give you my impressions.
I've gone through 5 sets of rear tires and 1 front set in 18000KM. I drive the **** out of this car. I've gone to the track drifting and 1/4times in it so I will try give my best details of how its changed. If the change isn't enough for me, I may add the MHP long tube headers to this tune to see how they will add power.
Should be about a week or so from now when I get the tuned ecu back.
Im sending the second ECU to Renntech for the second tune package they offer, 511hp.
I will be getting the secondary cats removed, which Renntech said is good for another 10hp.
I will update this thread once the ECU is returned to me and give you my impressions.
I've gone through 5 sets of rear tires and 1 front set in 18000KM. I drive the **** out of this car. I've gone to the track drifting and 1/4times in it so I will try give my best details of how its changed. If the change isn't enough for me, I may add the MHP long tube headers to this tune to see how they will add power.
Should be about a week or so from now when I get the tuned ecu back.
Super Member
Joined: Jul 2009
Posts: 520
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From: Toronto
2014 Lotus Evora S
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From: Ny
Anything W/4Wheels
The best thing about getting the 2nd ecu is for service. They don't need u vin to order u ecu all u need is the part number. Then they need to vin code you spear to your original ecu. (takes 15 min for mb to do)
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From: FL
'09 C63 AMG
Great choice on the ecu flash tune; here's my stage 2 (ecu 2 upgrade) RENNtech dyno and numbers from last week (dyno'd @ the RENNtech facility) 
...
https://mbworld.org/forums/3721215-post51.html
btw -- you're going to love your new RENNtech C63 AMG!!!
...https://mbworld.org/forums/3721215-post51.html
btw -- you're going to love your new RENNtech C63 AMG!!!
Last edited by sflgator; Sep 20, 2009 at 01:29 PM.
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Super Member
Joined: Aug 2009
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From: prattville alabama
C63
Great choice on the ecu flash tune; here's my stage 2 (ecu 2 upgrade) RENNtech dyno and numbers from last week (dyno'd @ the RENNtech facility) ...
https://mbworld.org/forums/3721215-post51.html
btw -- you're going to love your new RENNtech C63 AMG!!!
...https://mbworld.org/forums/3721215-post51.html
btw -- you're going to love your new RENNtech C63 AMG!!!
Super Member
Joined: May 2009
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From: Calgary, Canada
'10 F150 FX4 SCrew. '14 S212S
What do you say? My last ECU was fried? wouldn't it be covered under warranty?
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From: Ny
Anything W/4Wheels
BTW guys whats a renntech c63 PKG 3. putting down to the wheels.
i saw on there web sire that its $13,290.00 for tune. s.s headers (Not sure if they long tubes or shorty's i know they offer both) airbox and sound pipe mod.
i saw on there web sire that its $13,290.00 for tune. s.s headers (Not sure if they long tubes or shorty's i know they offer both) airbox and sound pipe mod.
Last edited by mthis; Sep 21, 2009 at 12:25 AM.
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C63 AMG
Mthis: It has the average power gains from the package on the webpage. The headers are shorty. You can't do LT unless you delete the cats. Renntech doesn't touch the primary cats only the secondary with the sound pipe(rear cat delete)
I have a friend that works at the dealership, so I got the ECU at near cost price, 1900CND.
They need the VIN to get the part number to order it. Once its in, you have to take the car in for them to program the ECU to the car. Once that's complete you can send it away for tuning. Programming is about 2hrs at the dealership.
I have a friend that works at the dealership, so I got the ECU at near cost price, 1900CND.
They need the VIN to get the part number to order it. Once its in, you have to take the car in for them to program the ECU to the car. Once that's complete you can send it away for tuning. Programming is about 2hrs at the dealership.
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From: Toronto
2014 Lotus Evora S
Mthis: It has the average power gains from the package on the webpage. The headers are shorty. You can't do LT unless you delete the cats. Renntech doesn't touch the primary cats only the secondary with the sound pipe(rear cat delete)
I have a friend that works at the dealership, so I got the ECU at near cost price, 1900CND.
They need the VIN to get the part number to order it. Once its in, you have to take the car in for them to program the ECU to the car. Once that's complete you can send it away for tuning. Programming is about 2hrs at the dealership.
I have a friend that works at the dealership, so I got the ECU at near cost price, 1900CND.
They need the VIN to get the part number to order it. Once its in, you have to take the car in for them to program the ECU to the car. Once that's complete you can send it away for tuning. Programming is about 2hrs at the dealership.
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From: Ny
Anything W/4Wheels
Mthis: It has the average power gains from the package on the webpage. The headers are shorty. You can't do LT unless you delete the cats. Renntech doesn't touch the primary cats only the secondary with the sound pipe(rear cat delete)
I have a friend that works at the dealership, so I got the ECU at near cost price, 1900CND.
They need the VIN to get the part number to order it. Once its in, you have to take the car in for them to program the ECU to the car. Once that's complete you can send it away for tuning. Programming is about 2hrs at the dealership.
I have a friend that works at the dealership, so I got the ECU at near cost price, 1900CND.
They need the VIN to get the part number to order it. Once its in, you have to take the car in for them to program the ECU to the car. Once that's complete you can send it away for tuning. Programming is about 2hrs at the dealership.
As far as the headers go I could swear I saw something on renntech lt's. But then again I could be wrong and I was looking at the shorty's.
I see review on the pkg2 that they have gains of 85rw hp. The tune giving 62rw and airbox and sound pipe mod made 23 rw what's the headers making? From my math just does mod will have u over 560 hp on 18% drive train loss. renntech ads show the lowest numbers possible on there site.
Last edited by mthis; Sep 21, 2009 at 09:46 AM.
Thread Starter
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C63 AMG
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Did they ask you for whatever reason you want a second ECU, I am thinking of doing the same thing as you, just not sure how to keep it "top secret" as I may need a justifiable answer for having TWO ecu's.
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From: San Diego Area
C63, SLK, F150
So does the ECU contain any info that would be controdictive to another computer unit? What computer or controler handles the milage, engine hours run, and so on Where is that info kept? Is there a link or match to that computer to the ECU as a double check? I am sure you can come up with something like OH car was struck by lightning and shorted out ECU so had to change it
Super Member
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From: Toronto
2014 Lotus Evora S
I suggest that you informally check with the dealership in your region first. In Toronto, I'm told by the dealership that they "don't want to know" about ECU upgrades. Draw your own conclusions.
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C63 AMG
They even wrote that it will void the warranty on the bill if I go through with it.
There is no way they can know if I went through with it, that's the point of having 2 ECUs. I plug in the stock one when I go to service. I also got the ECU at the dealership that I never go to. They have it recorded in their system, but that doesn't mean the other dealership would have access to those files. This is worse case scenario if I have to warranty something.
If something happens and I need warranty work, and they try denying it. It will have the stock ECU in it, untouched. I can always say I got scared of losing warranty and didn't go through with the tune and sold the ecu on ebay. There's no way they can prove I did use the tune ecu.
The MILEAGE is kept on a different system. I was too wondering about that, but it was left the same. The new ECU is sluggish compared to my stock one, my mechanic said it has to adapt to my driving. Even he said that my car is way more responsive then the other c63s he drives at work due to me driving the **** out out of it all the time. The shifts in sport mode also seemed to shift different as well.
My set position was lost with the new ecu, that was a ***** to get perfect again haha.
ECU is being shipped to Renntech tomorrow. I'm going to write a full review when I get it back.. Im not sure if it will have to adapt still. I only drove with it in about 15km.
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Anything W/4Wheels
Yes they asked me why I want a second ECU. I told them im going to get it tuned, they replied with "That will void the warranty if you do it"
They even wrote that it will void the warranty on the bill if I go through with it.
There is no way they can know if I went through with it, that's the point of having 2 ECUs. I plug in the stock one when I go to service. I also got the ECU at the dealership that I never go to. They have it recorded in their system, but that doesn't mean the other dealership would have access to those files. This is worse case scenario if I have to warranty something.
If something happens and I need warranty work, and they try denying it. It will have the stock ECU in it, untouched. I can always say I got scared of losing warranty and didn't go through with the tune and sold the ecu on ebay. There's no way they can prove I did use the tune ecu.
The MILEAGE is kept on a different system. I was too wondering about that, but it was left the same. The new ECU is sluggish compared to my stock one, my mechanic said it has to adapt to my driving. Even he said that my car is way more responsive then the other c63s he drives at work due to me driving the **** out out of it all the time. The shifts in sport mode also seemed to shift different as well.
My set position was lost with the new ecu, that was a ***** to get perfect again haha.
ECU is being shipped to Renntech tomorrow. I'm going to write a full review when I get it back.. Im not sure if it will have to adapt still. I only drove with it in about 15km.
They even wrote that it will void the warranty on the bill if I go through with it.
There is no way they can know if I went through with it, that's the point of having 2 ECUs. I plug in the stock one when I go to service. I also got the ECU at the dealership that I never go to. They have it recorded in their system, but that doesn't mean the other dealership would have access to those files. This is worse case scenario if I have to warranty something.
If something happens and I need warranty work, and they try denying it. It will have the stock ECU in it, untouched. I can always say I got scared of losing warranty and didn't go through with the tune and sold the ecu on ebay. There's no way they can prove I did use the tune ecu.
The MILEAGE is kept on a different system. I was too wondering about that, but it was left the same. The new ECU is sluggish compared to my stock one, my mechanic said it has to adapt to my driving. Even he said that my car is way more responsive then the other c63s he drives at work due to me driving the **** out out of it all the time. The shifts in sport mode also seemed to shift different as well.
My set position was lost with the new ecu, that was a ***** to get perfect again haha.
ECU is being shipped to Renntech tomorrow. I'm going to write a full review when I get it back.. Im not sure if it will have to adapt still. I only drove with it in about 15km.
hey if you dont mind can you ask renntech about longtube headers. i have a friend thats been looking around for renntech products and someone from florida in renntech toled him that if he does tune LT's and airbox and pully and soundpipe mod he will be at 495rw.(93 oct) can you just verify this info b/c this is new to me and does are the highest numbers i ever heard of. thanks
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C63 AMG
hey if you dont mind can you ask renntech about longtube headers. i have a friend thats been looking around for renntech products and someone from florida in renntech toled him that if he does tune LT's and airbox and pully and soundpipe mod he will be at 495rw.(93 oct) can you just verify this info b/c this is new to me and does are the highest numbers i ever heard of. thanks
Thread Starter
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C63 AMG
Correction: Renntech has LT headers, but they do not delete the primary cats due to emissions.
I assume that is where these other LT headers are making most of the power is by deleting all 4 cats.
I assume that is where these other LT headers are making most of the power is by deleting all 4 cats.
