I was set on 2.5", but many turbos come with 2" outlet.. so i thoght maybe to run 2" from compressor to intercooler, then 2.5". how much of a difference is it really going to make on b series aiming for 300-350whp tops

 

im using 2 1/4 from TB to IC and 2" from IC to turbo, making 306

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec.dc2 &raquo;</TD></TR><TR><TD CLASS="quote">I was set on 2.5", but many turbos come with 2" outlet.. so i thoght maybe to run 2" from compressor to intercooler, then 2.5". how much of a difference is it really going to make on b series aiming for 300-350whp tops</TD></TR></TABLE>

I run 2" from turbo to intercooler than 2.5" from intercooler to throttle body. HP is in the sig, its been working well so far.

 

I like to use whatever the turbo outlet is for the piping to the IC. From the IC to the TB generally varies with the size of your IC outlet and TB bore.

 

i'm using 2.5 all around. just a reducer coupler from the turbo to the pipes. i made 278hp@9psi on a stock gsr