2016 E400 Coupe Tuning Options
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From: Charlton, MA
2016 E400 Coupe Mars Red
2016 E400 Coupe Tuning Options
I should be taking delivery of an E400 coupe in a few days and I'm interested in tuning options out there. I need a tuning solution that allows me to return to stock when I bring the car into the dealer or need to pass a state inspection. Ultimate power is not a goal, just a decent boast with no degradation in drivability . Can you guys make any suggestions. Many Thanks
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2012 E550 Coupe, 2013 Escalade ESV, 2013 Lexus GS350, 2003 Honda VFR, 2017 Yamaha Kodiak 700 EPS SE
http://www.oetuning.com/mercedes-benz-e400-v6-biturbo
Had the OE tuning stage 1 tune done on my E550 with excellent results (see my thread which also has dyno results). The guys there are great to work with.
Had the OE tuning stage 1 tune done on my E550 with excellent results (see my thread which also has dyno results). The guys there are great to work with.
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From: Charlton, MA
2016 E400 Coupe Mars Red
Thanks, yeah I found them a while back, love the numbers but correct me if I'm wrong but I think this is an ECM flash right..? That would eliminate the revert back to stock option. I'm looking for a solution that may include a handheld programmer and the ability to store both the custom and the stock tune and allows either to be loaded.
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2012 E550 Coupe, 2013 Escalade ESV, 2013 Lexus GS350, 2003 Honda VFR, 2017 Yamaha Kodiak 700 EPS SE
Yes, the tune is a bench flash type requiring you to send the ECU to the tuner or can be done at an authorized local dealer. The tune can always be reverted (I think you get one re-flash for free from most of the major tuners) but you would have to resend or bring vehicle back to authorized dealer. The ECU on the newer MBs do not have the ODB2 interface to allow to flash for a handheld programmer. As the ECU is fairly simple to remove / install, the easiest way to switch from stock to the tuned version is to obtain another ECU for your vehicle and swap out as needed. I believe with a Stage 1 ECU Tune (from a reputable tuner) the risk of manufacturer warranty claim denial is minimal with the tune in place on your ECU. See RENNtech FAQ:
http://www.renntechmercedes.com/inde...aq-s#rt_vs_oem
The ECU tune gains on the E400 are pretty impressive!
Here is the link for my tune:
https://mbworld.org/forums/e-class-c...550-coupe.html
http://www.renntechmercedes.com/inde...aq-s#rt_vs_oem
The ECU tune gains on the E400 are pretty impressive!
Here is the link for my tune:
https://mbworld.org/forums/e-class-c...550-coupe.html
Thanks, yeah I found them a while back, love the numbers but correct me if I'm wrong but I think this is an ECM flash right..? That would eliminate the revert back to stock option. I'm looking for a solution that may include a handheld programmer and the ability to store both the custom and the stock tune and allows either to be loaded.
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From: Charlton, MA
2016 E400 Coupe Mars Red
Thanks that's great info for sure. Looks like the RENNtech tune is milder than the OE tune and a tad more expensive. Are these ECU swaps a do it yourself type thing...?
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2012 E550 Coupe, 2013 Escalade ESV, 2013 Lexus GS350, 2003 Honda VFR, 2017 Yamaha Kodiak 700 EPS SE
ECU removal / installation is very easy. The main tuners will give you specific instructions and support.
Here is the link for RENNtech ECU removal instructions:
http://www.renntechmercedes.com/inde...ory/53-e-class
Here is a link for ECU Removal instructions for Eurocharged:
http://www.eurocharged.com/support/e...l-instructions
There are also YouTube videos on MB ECU removal.
Here is the link for RENNtech ECU removal instructions:
http://www.renntechmercedes.com/inde...ory/53-e-class
Here is a link for ECU Removal instructions for Eurocharged:
http://www.eurocharged.com/support/e...l-instructions
There are also YouTube videos on MB ECU removal.
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Thread Starter
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From: Charlton, MA
2016 E400 Coupe Mars Red
Does anyone have experience with dealer service interaction post tune, and more importantly state vehicle inspections..? I have had very bad experiences with state inspections on a truck with a custom tune in the past, so bad I had to give up on it.
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2012 E550 Coupe, 2013 Escalade ESV, 2013 Lexus GS350, 2003 Honda VFR, 2017 Yamaha Kodiak 700 EPS SE
MBWorld Fanatic!
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From: Virginia
2012 E550 Coupe, 2013 Escalade ESV, 2013 Lexus GS350, 2003 Honda VFR, 2017 Yamaha Kodiak 700 EPS SE
This level of tune will have no impact on State Vehicle Inspection or Emissions Testing (at least I can say this for Virginia). For dealer services like normal maintenance this has had no effect on my local MB dealer interaction (however have not had anything major done which might require them to look at ECU).
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From: Charlton, MA
2016 E400 Coupe Mars Red
Installed the modified ECU this weekend and got to drive the car for about 40 miles or so. Low speed driving around town is still smooth, quiet and refined as it always was. Out on the open road however it's significantly more powerful than stock. When compared to my previous car, 2014 Infiniti Q50S Hybrid I would say the E400 is a bit quicker. I question the HP figures but it's plenty quick.
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2012 E550 Coupe, 2013 Escalade ESV, 2013 Lexus GS350, 2003 Honda VFR, 2017 Yamaha Kodiak 700 EPS SE
Congrats on your ECU tune outcome!
Would be interesting to see what the real increases in HP and Torque were but I suppose you did not do dyno test prior to tune. I dyno'd my E550 Coupe before and after the ECU tune and the results were significant and did align with my perceived increased performance (+61 WHP and +110 WTQ).
With only 40 miles, I imagine the ECU is still "learning" so you may realize even better performance.
Would be interesting to see what the real increases in HP and Torque were but I suppose you did not do dyno test prior to tune. I dyno'd my E550 Coupe before and after the ECU tune and the results were significant and did align with my perceived increased performance (+61 WHP and +110 WTQ).
With only 40 miles, I imagine the ECU is still "learning" so you may realize even better performance.
Installed the modified ECU this weekend and got to drive the car for about 40 miles or so. Low speed driving around town is still smooth, quiet and refined as it always was. Out on the open road however it's significantly more powerful than stock. When compared to my previous car, 2014 Infiniti Q50S Hybrid I would say the E400 is a bit quicker. I question the HP figures but it's plenty quick.
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From: Charlton, MA
2016 E400 Coupe Mars Red
I reached back to OE to get a little more detail on what exactly they changed on my tune. They would not provide anything more than "we modify 90+ maps". They said they are concerned in letting out to much detail because that's how tunes get stolen and sold at lower prices.
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From: Charlton, MA
2016 E400 Coupe Mars Red
Yeah, I asked for that as well but they would not provide any. I'm just questioning the claim of nearly 450hp from the stock of 333hp. Yeah it's much faster now but I don't think it's 450 fast. Again mostly based on seat of the pants comparison with my Infiniti Q50S Hybrid which I have not yet turned in (lease). The Infiniti claims 360hp and something like 450 ft lbs, but the torque is hard to nail due to the electric motor added to the gas engine. The E400 feels more powerful but not by as much as I expected. Still a crap load of fun to drive however.
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From: Virginia
2012 E550 Coupe, 2013 Escalade ESV, 2013 Lexus GS350, 2003 Honda VFR, 2017 Yamaha Kodiak 700 EPS SE
MBWorld Fanatic!
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From: Virginia
2012 E550 Coupe, 2013 Escalade ESV, 2013 Lexus GS350, 2003 Honda VFR, 2017 Yamaha Kodiak 700 EPS SE
Thread Starter
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Joined: Apr 2015
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From: Charlton, MA
2016 E400 Coupe Mars Red
Hey guys, it's been a long time since I visited here and the lease on my 2016 E400 has been offered a 5 month early deal so I just purchased a red 2018 P2 car. My 2016 ran for the last 2+ years on the OE tune with zero issues. Still pulls strong and it has been a joy to drive. So now I move onto the VERY different 2018, serious upgrade inside, body is a little too round but it will grow on me. I hoping OE has some kind of deal to move a tune but I bet they don't. I'm also hoping that my Vossen CVT's might fit but I'm not hopeful there either.
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From: Ohio
2017 E400 Coupe & 2018 GLC43
Indeed the new interior is stunning but I agree with you on the bland rounded exterior design. I feel with a lowered stance and some wider/larger wheels the car could transform into something special.
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From: Charlton, MA
2016 E400 Coupe Mars Red
Got the 2018 Tuned Today
Hey guys took delivery of the new 2018 last Friday but then went on a week long vacation in Mexico. Arrived home today and there was the box with my ECU in it and the OE tune. Slapped it in (5 minutes) and gave it a spins, only 24 miles on the car even after that spin. Engine feels much the same as the 2016 but the tranny and the Sport+ mode is different. Sweet rev matching downshifts and a slight gargle sound too, only slight. Seriously upgraded interior, car feels larger and slightly more planted that the C class based 2016 version.
Last edited by Richard_P_Harve; May 5, 2018 at 09:56 PM.
