Guilty

Hi everyone,

So something interesting happened last night.


I had a couple of CLEAN runs from a roll against my friend's 2009 E63 + Tune only.

I had my car tuned by Dime and it felt MUCH MUCH faster after the tune. Seriously.

We had a couple of runs in Mexico starting from 20mph, 40mph, and 60mph. We weree neck to neck until we reached 110mph and then he started pulling on me FAST. 2-3 cars length.

Now, I do respect his win and I'm happy for him but it also obviously makes me wonder these questions:

1. Stock vs Stock - Isn't the M177 faster than the M156?
2. What's the max HP/TQ a tune only M156 gets and what should be the numbers for the M177?

Btw, for the first 2 runs, I was in S+ fully automatic. That's where he pulled on me the hardest.

The 2 other runs, I was in Manual in Race and I shifted right at 6k RPM and didn't let it hit the red line since I figured the turbos will breathe better if I shifted early. The M156 is NA so I knew he had an advantage at the top end.

Just looking for clarifications, might end up getting a turbo upgrade + downpipes from Steve @ Dime. Will get a before and after Dyno if I do.

Oh... and funny thing was that my friend's car was tuned by Steve when he used to work at Weistec.

mr747

you should of pulled on him

Guilty

Yep. My car was running very strong as well. Temperatures were on check. I still don't get it, especially that I know he wasn't sand bagging.

mr747

maybe his car is a freak bud

Edition507

Nah, my car is the freak

VaserC63S

No replacement for displacement up top.

Edition507

Well said!

AlexZTuned

What do tune-only E63 6.2L's generally trap in the 1/4?

PL27

my c63s sedan stock vs 2010 c63 m156 tune/straight pipe - i pulled on him 2-3 cars, i had traction off and redlined each shift, from 45mph-160

matt11212

Im surprised by the outcome, would of thought you would of pulled on him. I have tune and downpipes with my car and I usually run it in race mode and let it do the shifting. I ran my buddies alpha 7 gtr, we were doing rolls and I got the jump on him but we were neck and neck he didn't start to pull on me until we hit about 140.

PL27

something doesn't seem right, i would get ur car dynoed or maybe re-run it but shift at redline.

this run was 45-130mph as u can see i started to pull, we ran it again and i pulled 2-3 cars up to 160

stock c63s, vs tune/straight pipe m156 c63 making 550hp

Guilty

What is this supposed to show exactly? Did the C63 catch up or did the C63S slow down at the end?

PL27

that was me slowing down @ 130mph i would of kept pulling if we kept going.

Guilty

Your race looks very similar to mine... except when we reached 110... he started pulling on me.

PL27

you should definitely rematch but redline all the way thru and you would probably win

Guilty

I think I said in my first post that the first 2 runs were in automatic where it shifted right at the red line. That's where he pulled at me the hardest.

PL27

forgot to mention in race mode with manual on
claimed 20hp+ in race mode

Guilty

The car is tuned, I don't notice any difference between race and S+. But yes, sure haha.

msd3075

He hit the nitrous button at 110.....

PL27

Can you post a video of you flooring it in sport+ from 45-140? In automatic mode. I have a video of me doing the same, would be cool to see the difference.

Guilty

Any suggestions on how to record? I can hold the phone but it won't be steady.

PL27

Heres mine 50-143, i just held my phone sideways not steady but u get the idea


this is another one but with the a/c on shouldnt effect it that much

PL27

These tests were done in mexico of course

Guilty

ok bud, i'll try to get you a vid if traffic allows. taking the car to the dyno in a bit