Originally posted by DarkkstaR
SPP used to, tantrumwerks has them, and labree also makes them I believe.
And WTF are you people talking about, what crazy mods are you doing... 3" > 2.5"...turbos + less backpressure = top end :)
bigger diameters don't exactly mean less back pressure.... what if he's going from a 3' DP to a 2.5' pipe? That's no good. And If he has a '3 pipe and is running a KO3 then the turbo will have a hard time pushing the denser cooler air that is sitting at the tail end of a wider pipe... thats more resistance.
These parts have to work in harmony. With Zoey's GT35/40R a large Dp and piping will probably work, but he will also have some crazy turbo lag.
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