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2.5" or switch to 3"

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Old 01-12-2006, 11:00 AM
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Default 2.5" or switch to 3"

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?

Old 01-12-2006, 11:10 AM
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Default Re: 2.5" or switch to 3" (boostdummy)

little faster spool, a few more hp
Old 01-12-2006, 01:06 PM
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Default Re: 2.5" or switch to 3" (urbansi)

<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>
Old 01-12-2006, 01:29 PM
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Default

what size is ur intercooler and piping???


Old 01-12-2006, 02:33 PM
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Default Re: (lucidvtec)

not sure what it matters but 2.5" piping with a precision small intercooler
Old 01-12-2006, 03:12 PM
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Default Re: (boostdummy)

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