anybody been brave enough to get the cylinder heads ported yet?
06-27-2008, 09:46 AM
#3
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did mine on my s4
<center><img src="http://pictureposter.audiworld.com/85119/101_2711.jpg"></center><p>My friend that bought a new RS4, and i traded cars. We did a rolling run from 30-120 and our cars were DEAD even. I had the P&P plus downpipes. We both had the same amount of gas, and we weigh about the same. Only MAJOR diffeence was he had 5k on the odo...and I know form personal experiance that the engines don't REALLY open up until after 10k
06-27-2008, 10:04 AM
#6
IIRC the cylinder heads on the RS4 are already ported and polished and the engine blueprinted. Those
are some of the differences between the 4.2 in the RS4 and other 4.2s. I believe the intake has been pretty much flow optimized from the factory, I don't think their is much to gain there. As Vijay has said many times, we are talking about a normally aspirated 4.2l, 12.5 compression ratio engine that makes 420hp. Its already highly tuned, not much you can do without forced induction other than exhaust and maybe a little chip tweaking.