M5 Expert (>4000)
Join Date: May 2006
Thanked 197 Times in 135 Posts
Pretty much a dead heat. Now I'm def convinced the Dinan diff does absolutely nothing except gains on the butt dyno (yes, I know Wolverine posted higher g-tech numbers, but I'm still not convinced).
Two things: why no software, Darren?
Two, I thought race cats replaced the SECONDARY cats and the headers just eliminated the primary's????
While I don't have experience with them, I have to believe that avry is correct about the K&N's. All that heated air sucked in by the open design of that filter can't be good.
Thanks again, D!