Eurocharged tune questions. V3 to V4 improvements?
For the record, even though facelift tunes have clearly not been written from scratch or perfected yet, the cars are still hugely faster than stock.
My Dragy verified times on Eurocharged V4: ( 2019 Estate, P Zero RFs)
0-60 MPH 3.50 ( stock estate- high 4s)
1/4 mile 11.81 @114mph ( stock - high 12s)
100-2001 KPH - 10.18 secs -( stock estate- 12.8 - see Auto Top NL)
Over a second improvement in just the 0-60 is crazy.
I you look carefully there is :
a huge area gain under the new curve - much border spread of power and torque.
Peak and overall torque gains are huge.
Peak power gain is modest - but over the rev range it's making extra 50 WHP approx, right till the red line.
Obviously I'd like a bigger peak gain as well, but its also important to have a big area under the power/ torque curve, not just a peak gain- because that's obviously only felt in the last 1K RPM.
I you look carefully there is :
a huge area gain under the new curve - much border spread of power and torque.
Peak and overall torque gains are huge.
Peak power gain is modest - but over the rev range it's making extra 50 WHP approx, right till the red line.
Obviously I'd like a bigger peak gain as well, but its also important to have a big area under the power/ torque curve, not just a peak gain- because that's obviously only felt in the last 1K RPM.
Last edited by batman719; Jan 29, 2020 at 01:41 PM. Reason: Missed a sentence.
here is a pic of my dyno. Notice the top end power drop. they said it may be the TCU limiting it. Who knows.
The Best of Mercedes & AMG
So it doesn’t seem like they are actively continuing to develop this tune for 2019s and up. Just my assumption based on that reply from them
now its been dyno tuned with live logs and and making the most of the hardware changes. So 390 Whp and 492 lb ft wheel torque, it's amazing for a 2019.
approximately 470 BHP and 560 lb ft torque.
Even if you take 15% off as it's a dyno jet that's great numbers.
I will be aiming for 3.3 0-60 mph and 11.6 1/4mile.
We're doing an air strip event in May , cant wait.
Last edited by AhEmGee; Feb 22, 2020 at 11:59 AM.
now its been dyno tuned with live logs and and making the most of the hardware changes. So 390 Whp and 492 lb ft wheel torque, it's amazing for a 2019.
approximately 470 BJP and 560 lb ft torque.
even if you take 15% off as it's a dyno jet that's great numbers.
I will be aiming for 3.3 0-60 mph and 11.6 1/4mile.
we're doing an air strip even in May , cant wait.
Did this cost you anything from EC or are they just trying to get this figured out for the facelift guys?
I Also removed the middle resonator for an xpipe. Still numbers are less that yours.
Did this cost you anything from EC or are they just trying to get this figured out for the facelift guys?
So I paid MSL originally for the dyno + tune and Handheld, then Jerry sent me some later updates as we had some issues.
Then I paid for the off the shelf V4 map , which ended up being abit less powerful and slower- 3.6× and 11.9× vs 3.5× and 11.8× consistently. .
I said to both can you improve this for me as should be faster not slower, especially now I've done an OPF delete.
So this custom dyno was pro bono but I did pay for the latst update and this was basically refining that.
MSL didnt charge me for the addtional dyno time but we're on friendly terms & he's a really good guy. We had a delay getting it dyno'd so only made the cut off by 15 mins as Jerry had an appointment locally.
The car was running on UK 99RON Which I think is maybe like US 94/ 95 Octane?
I think live dyno tune or at least from logs on a road drive, is also better than just a stock file .
I'm aiming for below 3.5 0-60mph, 100-200 kph in the 9s and 11.6 1/4 mile now, which is doable considering my old times with the weaker power curve.
Last edited by AhEmGee; Feb 22, 2020 at 08:43 PM.






