is this pretty accurate?

 

Hrmmmm I think something is wrong there

 

Ya he took off half a second before him haha.

 

I agree, horrible start, from a dig the CTS-V already has the advantage with the gobs of torque the LS motor has in it.

 

Not the case on the roll though. I'm surprised at the outcome, really.

 

how did the V lose from a dig but then win at the top end from a roll?

still nice vid

 

Every time I see videos like this I am confused. The rolling starts are never coordinated and it appears one car always has the advantage. The good old 3 honk crap drives me crazy. Please take it to a track and do some legit testing.

 

are you talking about the same vid?

 

e85 is a HUGE advantage. Put some 110 octane in the c63 and tune for it then you'll see a much different outcome. not to mention it looks like there in a desert which makes the fuel even more important with high iat's.

 

2 tenths from race gas tune on a NA c63 was my experience.

 

yeah, i guess the CTS just backed off and the c caught up

 

The C63 may have fallen behind in both runs, but both runs have very inconsistent starts. I really want to see then take it to a drag strip or something and see both their ETs. I know the C will probably still fall behind, but at least no one has a false start advantage.

 

I cant believe the Mexican government has the money to make that curvey sidewalk.

 

most n/a motors can get very close or hit mbt on 93, on the other hand boosted engines dont usually get close because they will detonate first.(depending on boost and compression ratio). If you look at other vehicles - like the supra for say 650-700whp is about all your going to get on 93 octane us grade. where as on e85 the sky is the limit 1300-1400whp. Look at the twin turbo series bmw motors, same thing an easy 100whp on e85 limited by the stock turbos ofcourse. Not alot of people playing with e85 in the benz world mostly because its consistency is not reliable unless you've got a flex fuel sensor and even then it maybe contaminated or dirty. Not to mention further long term issues with corrosion.

anyways was this a custom tune done on a dyno for your car or just some off the shelf map. Id imagine atleast 50 crank hp over a regular tune would be attainable on 110.

 

Race tune from weistec. More timing.