Eurocharged Stage 2 Flex Fuel Tune - full E85 tune
1st & 2nd in anything other than super dry conditions is hopeless to be honest. 3rd & 4th much better but I still get wheel spin in 3rd to 4th and sometimes from 4th to 5th. It's a beast on the road it really is it pulls so hard in 3rd and 4th. It hits about 135mph in 4th before changing to 5th.
The tuner has never had anything in the Dyno that powerful his face said it all when he was sat in the car and the front was lifting. I'll try and upload some videos if I can.
I took him out in it after and he was creaming his pants!
Still going to see if I can get on this other Dyno and get some more runs and data logs.
I've ordered the dragy GPS so will also see what times I get 60-130mph as I don't have a 1/4 mile track.
Find a quiet stretch of level road in an un-populated area and give it a go to log the quarter mile. Your times may be sub-optimal when compared to a prepped surface at a quarter mile strip, but your trap speed should be pretty close.
Yes I'm a newbie but not to the Mercedes world, so forgive me for chiming in earlier just elated on the progress here. I just picked up my other baby. Long story short it already has secondary cat deletes and a Renntech exhaust. Sounds mean even in C mode. The dealer said it a renntech tune but subsequently it has been flashed back to stock. Nonetheless I have been following all threads from here and read every single comment (seriously). I will be dyno'g the car next week in its form now then following up the the flex fuel E50 route. I am really intent on adding BMC or AFE dry filters and DP's. Emailed Jerry he stated he has a set of used Renntech catted DP's on his car and they added no power so that might be up in the air. So to continue the research here I will baseline and follow up with the progress throughout my adventures.
Wish me luck and welcome to the W212 platform. I will also be investing in data collection which should help here.
2014 E63 S-21,000 miles
Designo-Sweet
Coming for you!
Super clean very fortunate.
Loving the color and W212 platform.
Seb's tune should ideally have been posted in the Stage 1 tune thread to avoid confusion.
Both my tune and Sid's tune are considered Stage 1, as they both work with the stock hardware.
When comparing my tune to Sid's its better to consider my tune a Stage 1+, as mine uses upwards of 18 psi boost to his 14/15 psi.
Sid makes less torque than me because his tune makes less boost, but he is also able to run full E85, whereas mine, being more aggressive, is only able to accept up to E50 in the tank. I am fuel pump limited.
If our respective dynos can be trusted then Sid is making almost as much power as me, but maybe 140 lb-ft torque less peak torque.
I wish Sid was in Texas... It'd be great to line them both up to see what difference there is in performance. I suspect I'd be ahead in a drag race from a start, but from a roll I expect they would be much closer.
The Best of Mercedes & AMG
Last edited by billvp218; Jan 5, 2020 at 03:53 AM.

This just shows the amount of propaganda fluent in the aftermarket world to attract clients. Brutus_tx made this claim earlier when a friend of his dropped 25K to run a 1/10 of a second faster at 2 miles per less trap speed. So shout out for someone to challenge the status quo.
That question about fuel requirements and the flow was asked earlier and I think brutus_tx was going to try and collect that data.
I'm pretty sure support modes will help to push the E50 flex tune to greater levels. My next stop after my before and after tune is to invest in the TCU setup and display the data.
Last edited by Marine 1; Jan 4, 2020 at 04:03 PM.
Yes I'm a newbie but not to the Mercedes world, so forgive me for chiming in earlier just elated on the progress here. I just picked up my other baby. Long story short it already has secondary cat deletes and a Renntech exhaust. Sounds mean even in C mode. The dealer said it a renntech tune but subsequently it has been flashed back to stock. Nonetheless I have been following all threads from here and read every single comment (seriously). I will be dyno'g the car next week in its form now then following up the the flex fuel E50 route. I am really intent on adding BMC or AFE dry filters and DP's. Emailed Jerry he stated he has a set of used Renntech catted DP's on his car and they added no power so that might be up in the air. So to continue the research here I will baseline and follow up with the progress throughout my adventures.
Wish me luck and welcome to the W212 platform. I will also be investing in data collection which should help here.
2014 E63 S-21,000 miles
Designo-Sweet
Coming for you!
Super clean very fortunate.
Loving the color and W212 platform.

This just shows the amount of propaganda fluent in the aftermarket world to attract clients. Brutus_tx made this claim earlier when a friend of his dropped 25K to run a 1/10 of a second faster at 2 miles per less trap speed. So shout out for someone to challenge the status quo.
That question about fuel requirements and the flow was asked earlier and I think brutus_tx was going to try and collect that data.
I'm pretty sure support modes will help to push the E50 flex tune to greater levels. My next stop after my before and after tune is to invest in the TCU setup and display the data.
I'm excited to see someone else investing in the data logging tools necessary to really quantify these tunes! Kudos to you Marine 1! I'm keen to see your results.
I wasn't able to discern what the max flow rates were for the injectors,but then again I didn't dig all that deep.
This is my daily and I'm waffling on whether to get the TCU tune or not. I have an opportunity to get the Renntech TCU Tune but I haven't pulled the trigger yet.
My goal was 10's tune only and I'm agonizingly close to that milestone. We are going back to the track on the 17th and I will drive there on E50 and put a splash of GT Plus Race Gas on top see if I can crack the 10's barrier.
It's possible that down pipes would have gotten me there already, but I didn't want to rely on the aftermarket for the performance. If you are willing to do the investment needed to push the performance envelop then I applaud you!
Personally, I am really struggling with the justification of aftermarket hardware to support a tune now that I've had my tune for a few months with over 3000 miles of aggressive driving on a stock platform. I've seen the effects that throwing the check book at a car has gotten my friends. I'm more than skeptical that additional hardware is required when you have a competent tune.
Step one- Base performance
Step two-Eurocharge flash (E50) it should read the Brutus tune.
Step 2.5 Dragy app (ordered already and plan to use as a base measurement)
Step 3 -TCU- Renntech tune which I do feel a bit more comfortable since the TQ management is "controlled"
Step 4 Data logging and feedback.
I've also asked the guy from the other Dyno to come with me with his Hp tuners so we could data log everything, hopefully he agrees.
Really looking forward to dragy turning up so I can get some numbers of what this animal will do.
I wish I was in Texas too Brutus! Would be awesome to have a run down the 1/4mile in dry warm conditions!
I will keep everyone posted.
Im not sure where Jerry from EC got his from or how he's done it.
Vone Racing
Was supposed to have between 680 and 700hp but was limited with the fuel pump.
Next step should be DP and fuel pump if I can found one...
Vone Racing
Was supposed to have between 680 and 700hp but was limited with the fuel pump.
Next step should be DP and fuel pump if I can found one...
live in France but I got mine from EuroCharged. Mines producing 668awhp and 642awtq.
Once you upgrade your high pressure fuel pump I would also look into larger diameter fuel lines, an ethanol content sensor, Then have Jerry work his magic and reflash since you will have the supporting modes to really have similar numbers to his. Reading online it looks like after time some of the rubber fittings along the fuel system might be subject to getting worn out prematurely. You can also ask Jerry for his advice.
Thx hope to see those revised dyno numbers soon.
Once you upgrade your high pressure fuel pump I would also look into larger diameter fuel lines, an ethanol content sensor, Then have Jerry work his magic and reflash since you will have the supporting modes to really have similar numbers to his. Reading online it looks like after time some of the rubber fittings along the fuel system might be subject to getting worn out prematurely. You can also ask Jerry for his advice.
Thx hope to see those revised dyno numbers soon.
My dragy has turned up will give it ago later on once kids are in bed.
oooohhhhhh! Someones going to be misbehaving in France... standing by for results!
Have you registered with draggy yet, and if so, whats your handle? I'm Brutus_Tx if you want to look back on any of my runs/videos, from Stock all the way to my present tune.
Please upload any videos if you can.
I use this mount for my iphone... it works a treat.
Have you registered with draggy yet, and if so, whats your handle? I'm Brutus_Tx if you want to look back on any of my runs/videos, from Stock all the way to my present tune.
Please upload any videos if you can.
I use this mount for my iphone... it works a treat.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Yes I registered awhile ago and didn't realise you need the little box you stick to the dash haha. My handle is Eddietemple69.
I've realised the problems on the dyno.on Friday were because it wasn't in Dyno mode haha 🤦 tomorrow will be interesting now!
Yes I registered awhile ago and didn't realise you need the little box you stick to the dash haha. My handle is Eddietemple69.
I've realised the problems on the dyno.on Friday were because it wasn't in Dyno mode haha 🤦 tomorrow will be interesting now!
Here's an example of what I mean from previously when we were still fine tuning the car.







