SL/R231: 2013 SL550 - Renntech performance benchmarking
#1
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2013 SL550 - Renntech performance benchmarking
Just purchased 2013 SL550 with 9500 miles.
Planning to install Renntech ECU upgrade, performance air filters and most likely Renntech stainless mufflers.
I wanted to get a benchmark of my car's performance prior to installing the performance accessories to see how much they really helped in terms of acceleartion. I found a few videos of renntech modified cars and dyno graphs, but nothing which really showed the performance gain as far as acceleration times.
So this evening I borrowed a friends Solo DL timer which has performance tests 0 - 60, 1/8 and 1/4 miles based on GPS readings from numerous satellites.
I played with it a little and so far my best 0 - 60 time has been 4.42. Also got 4.44, so I'm thinking that's probably pretty close to it's best 0 - 60 time. I will do a few more tomorrow then planning to redo the test after having the performance parts installed and post my findings. I would be happy to video if any interest.
Hoping others in this forum have already completed similar enhancements and could provide some feedback as to how effective. Not sure the mufflers are worth much as far as performance improvement goes. Might do them for the SL63-type sound.
Thanks,
Eric
Austin, TX
Planning to install Renntech ECU upgrade, performance air filters and most likely Renntech stainless mufflers.
I wanted to get a benchmark of my car's performance prior to installing the performance accessories to see how much they really helped in terms of acceleartion. I found a few videos of renntech modified cars and dyno graphs, but nothing which really showed the performance gain as far as acceleration times.
So this evening I borrowed a friends Solo DL timer which has performance tests 0 - 60, 1/8 and 1/4 miles based on GPS readings from numerous satellites.
I played with it a little and so far my best 0 - 60 time has been 4.42. Also got 4.44, so I'm thinking that's probably pretty close to it's best 0 - 60 time. I will do a few more tomorrow then planning to redo the test after having the performance parts installed and post my findings. I would be happy to video if any interest.
Hoping others in this forum have already completed similar enhancements and could provide some feedback as to how effective. Not sure the mufflers are worth much as far as performance improvement goes. Might do them for the SL63-type sound.
Thanks,
Eric
Austin, TX
Last edited by ericnaustin; 07-22-2015 at 02:38 AM. Reason: clarification
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SMuharsky (03-12-2023)
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2021 Mercedes GLC 43 AMG
I am interested in putting in Renntech as well. Just to let you know that you aren't alone in the interest. Thanks for the information, I await your further testing.
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2021 Mercedes GLC 43 AMG
If the tune causes a problem then it won't be covered. If the problem is caused by other than the tune then it is covered. The likelihood that the Renntech would cause an engine problem during the warranty period isn't high imo. When you see that many of the MB dealerships actually provide the service speaks for itself.
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#8
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My local dealership has installed Renntech tunes for 5 years and said that they have never had any issues. I am not going to drive it that hard most of the time anyway.
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2021 Mercedes GLC 43 AMG
My guess is that it should be around that if you can get it to bite. One of my employees has a 2006 Z06 with mods which took it to 800 hp, but all it did at the first was shred tires. He had to go to racing slicks to do well at the strip. That is why I am so interested in actual data since we don't really know if the extra hp will actually be useable. My guess, and it is a guess, is that it will be.
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2021 Mercedes GLC 43 AMG
http://www.060calculator.com/
The curb weight is 3935 and most estimates are that the peak stock horsepower is actually 449. If I take your 4:28 and guess that your weight is 170 lbs. then your car is actually producing about 465 hp and the gain to 530 would give you a 3.88 second 0-60.
#12
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AMG GTC Roadster, E63s Ed.1, M8 Comp. Coupe
The Renntech tune takes it somewhat close to a stock SL63 which does officially 4.1sec. and tests at 3.5 to 3.9 sec.
I think I would expect around 3.9 sec. which is quite nice for a RWD cruiser
#14
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Ordered the Renntech higher performance ECU flash and high-flow air filters today. $2917. Will install next week and re-run 0 - 60 and 1/8 miles tests and post results.
Last edited by ericnaustin; 07-24-2015 at 01:24 AM. Reason: typo
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'18 GLE63S AMG /'19 PORSCHE TURBO S / '09 CORVETTE ZR1 /'14 LEXUS RX350/'16 RAV4 Ltd
You will be pleasantly pleased ...ask me how I know...these numbers at 2400 asl..you will certainly see a 1/2 sec and likely close to a sec
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#17
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Not sure how much 0 - 60 will improve due to traction, but I'm hoping for 1/2 sec.
Suspect gains will be more noticeable in 1/8 mile. I might take a couple videos this weekend and post for better comparison.
Suspect gains will be more noticeable in 1/8 mile. I might take a couple videos this weekend and post for better comparison.
#18
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I took a few more 1/8 miles times and consistently getting 8.41/2. Not able to duplicate the above 8.23.
Last edited by ericnaustin; 08-04-2015 at 08:28 PM. Reason: added info to 2nd post
#19
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Very simple to remove ECU. Called Renntech and they walked me through it. No tools required. Plastic cover snapped off, ECU unplugged. 1 min job. Expect ECU back in two days.
Last edited by ericnaustin; 08-04-2015 at 08:30 PM. Reason: additional details
#21
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Oops... No. I had Renntech on the phone and they mentioned nothing about disconnecting the battery. I literally told him, "ok popping hood now, removing plastic cover..." . No mention of disconnecting battery. I do now recall reading that the battery needs to be disconnected. Hope/suspect it will be ok.
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2021 Mercedes GLC 43 AMG
Oops... No. I had Renntech on the phone and they mentioned nothing about disconnecting the battery. I literally told him, "ok popping hood now, removing plastic cover..." . No mention of disconnecting battery. I do now recall reading that the battery needs to be disconnected. Hope/suspect it will be ok.
I found this thread that makes me think it will be okay to have the battery still connected.
https://mbworld.org/forums/c63-amg-w...emove-ecu.html
Last edited by Centexhokie; 08-05-2015 at 08:36 AM. Reason: Added link
#23
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I inquired with Renntech if I had to disconnect the battery before I plugged back in the ECU and I was told, "No you do not !!". Maybe this is just specific to the M278?
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2021 Mercedes GLC 43 AMG
Thanks. I would think that as long as you don't wake it up with the key everything should be fine. I had a tune on a BMW 335i and lots of people swore that you needed to disconnect the battery, but lots of other people kept the keys 50 ft away and never had a problem. Opinions may vary. I am looking forward to your reports.
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SL 550 R231
I took a short spin on the Autobahn to see if she hits the 300Kmh (187mph).
I used the speed tracker App and hit the 301 kmh easily.
The only mods are the Renntech tune, K&N Airfilter and SLS intercooler pump.
I used the speed tracker App and hit the 301 kmh easily.
The only mods are the Renntech tune, K&N Airfilter and SLS intercooler pump.