M3/M4's making some big power
http://f80.bimmerpost.com/forums/sho....php?t=1043129
Gotta give credit where due, those are fantastic numbers for relatively little mods (filters / catted down pipes / exhaust and tune!)
Interesting to say the least. W204 owners may have to be SC'd just to keep up with these bad boys.
I glanced at the M cars before going c63 but I just preferred the look and sound of the c63 beast
But those gains the m3/4 get from even just a tune may be food for thought come next purchase time
M4 ran 12.4/115
Motor Trend the e63 was faster around VIR than the M4
it weighed 700 lbs more lol
Just think what the new C63 will get
it has a huge head start
33% more dispacement
higher compression
better intercooling
it should be a 750/800 machine if the M4 numbers are to be believed
but they are not
Either way, I want to see a reliable street tune to see what they can actually do.
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M4 ran 12.4/115
Motor Trend the e63 was faster around VIR than the M4
it weighed 700 lbs more lol
Just think what the new C63 will get
it has a huge head start
33% more dispacement
higher compression
better intercooling
it should be a 750/800 machine if the M4 numbers are to be believed
but they are not

Hopefully the shop car (yellow M4) will back up its numbers with the "right" trap speed.
As for the exhaust... Downpipes can give turbo cars huge gains. Such as, oh I don't know, that 5.5 biturbo gem that is in the CLS/E63 right now.
Base models (I know who cars) but the c class is far better than a base 3 series.
Furthermore, they aren't really catching up. IMO everyone stayed put. M3/M4 can get around a circuit more quickly and is a more serious car. The C63 is just the hey I'm here having almost too much fun and will most likely still win out in a straight line battle mod for mod.
Everyone (BMW/MB) has been remaining their course...
Audi on the other hand, those sneaky ****** have been doing some good work over there lately.
Crank 15% losses 565 hp / 570 lb ft from 3 liter
That is >30 psi of boost at its stock comp ratio
And eff comp ratio of 30:1
Specific output of 3.1 hp / in^3








That's some solid power from just a tune. I cant wait to run into one, see what it can do in real life.