Right now my exhaust is a full 3" manderal bent but the first 6" off the turbo is 2.5" which is 2 90 deg bends cut and welded together.

I am using a t3/t04e 57 trim .48a/r turbo and and shooting for around 20 psi of boost and 300-350 whp range.

How much of a difference would the 3" make?

 

little faster spool, a few more hp

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by urbansi &raquo;</TD></TR><TR><TD CLASS="quote">little faster spool, a few more hp</TD></TR></TABLE>

 

what size is ur intercooler and piping???

 

not sure what it matters but 2.5" piping with a precision small intercooler

 

go with the 3". turbos almost always love 3" better