V7 Power Problem
Dave just didn't read the thread properly. It happens...
Personally I dont notice any issues. But honestly, I havent felt a power increase between stock, v6 and v7....even though the dyno had increases in hp and tq between each tune.
Maybe my *** dyno isnt as sensitive as others lol
Headers coming in next week so maybe that will change
Personally I dont notice any issues. But honestly, I havent felt a power increase between stock, v6 and v7....even though the dyno had increases in hp and tq between each tune.
Maybe my *** dyno isnt as sensitive as others lol
Headers coming in next week so maybe that will change

Under 4000rpm, the car feels great, really strong, more refined than V6 and more eager to go. Floor it, you shoot off until you get to 4000rpm, then you hit a wall where the car accelerates but slowly, like TCS has just kicked your *** and stopped your power. This stays all the way to the redline.
It doesn't matter if I turn TCS fully off, battery reset, drive for miles to adapt, it's all the same.
I flash back to stock, V5 or V6 and the car is an absolute brute passed 4000rpm like always although I can clearly feel the power differences between all three.
I can only assume it is something in the mapping as it is a very specific issue.
Car is 2013 C63 non-PP with headers and 20k something miles. as never missed a beat until V7.
Under 4000rpm, the car feels great, really strong, more refined than V6 and more eager to go. Floor it, you shoot off until you get to 4000rpm, then you hit a wall where the car accelerates but slowly, like TCS has just kicked your *** and stopped your power. This stays all the way to the redline.
It doesn't matter if I turn TCS fully off, battery reset, drive for miles to adapt, it's all the same.
I flash back to stock, V5 or V6 and the car is an absolute brute passed 4000rpm like always although I can clearly feel the power differences between all three.
I can only assume it is something in the mapping as it is a very specific issue.
Car is 2013 C63 non-PP with headers and 20k something miles. as never missed a beat until V7.
Ditto x2
Under 4000rpm, the car feels great, really strong, more refined than V6 and more eager to go. Floor it, you shoot off until you get to 4000rpm, then you hit a wall where the car accelerates but slowly, like TCS has just kicked your *** and stopped your power. This stays all the way to the redline.
It doesn't matter if I turn TCS fully off, battery reset, drive for miles to adapt, it's all the same.
I flash back to stock, V5 or V6 and the car is an absolute brute passed 4000rpm like always although I can clearly feel the power differences between all three.
I can only assume it is something in the mapping as it is a very specific issue.
Car is 2013 C63 non-PP with headers and 20k something miles. as never missed a beat until V7.
Until you compare V6 and V7 on a dyno, you won't actually know what is going on.
Besides that, just spend the $2.99 to check your intake gaskets. It may be the easiest thing you'll ever do.
Thanks
Dave
I tried loading it up again for ****s and giggles and same problem as described , re loaded the v6 and problem disappeared all normal . I'm thinking the none beta files sent out were maybe different who knows.
from all this awesome talk about the 7 I'm really itching to enjoy it before winter comes my way here in boston !




I tried loading it up again for ****s and giggles and same problem as described , re loaded the v6 and problem disappeared all normal . I'm thinking the none beta files sent out were maybe different who knows.
from all this awesome talk about the 7 I'm really itching to enjoy it before winter comes my way here in boston !
I tried loading it up again for ****s and giggles and same problem as described , re loaded the v6 and problem disappeared all normal . I'm thinking the none beta files sent out were maybe different who knows.
from all this awesome talk about the 7 I'm really itching to enjoy it before winter comes my way here in boston !
On the positive side, I'm having some good fun with V6 still but like you say, after the good news we've heard about V7, I really want to try it if for nothing than the general refinements I felt low down in the rev-range.
In all seriousness, there are no leaks on this engine.
The Best of Mercedes & AMG
Being realistic my intake gaskets were already swapped out 1 month prior to my car getting tuned.
Being realistic my intake gaskets were already swapped out 1 month prior to my car getting tuned.
For my Subaru the maximum was in the 3-400 range and I am up to 60.
Last edited by Cozy; Sep 5, 2017 at 08:57 AM.
So for him to even know where to start he is looking for a log or someone present that has this problem.
If I can't do it, can we get refunds on the tunes that don't work? Being in the UK, I can hardly drag the car to Texas.
If Eurocharged were willing to fault find and fix this for free, I'd drive up there but unlikely. I think I'll have to call it quits at V6, and see if they'll process a refund for the dudd tune.
If Eurocharged were willing to fault find and fix this for free, I'd drive up there but unlikely. I think I'll have to call it quits at V6, and see if they'll process a refund for the dudd tune.
From a good source , iv heard that maybe the V7 is running to much timing
and its causing the car to knock , thus it pulls timing as a safety and that's where we feel the tremendous power loss. It could be something to consider or like I said before something got either changed or adjusted going from beta file to the official release file that I got .
and its causing the car to knock , thus it pulls timing as a safety and that's where we feel the tremendous power loss. It could be something to consider or like I said before something got either changed or adjusted going from beta file to the official release file that I got .
and its causing the car to knock , thus it pulls timing as a safety and that's where we feel the tremendous power loss. It could be something to consider or like I said before something got either changed or adjusted going from beta file to the official release file that I got .
So those with a problem - what fuel are you running with?












