on 2000 GSR, 3 in. piping going back is that takeing away from my low end power?

 

without a turbo, or 250 N/A horsepower....

yes..... way too big

 

what size do you suggest?
also 4 - 2 - 1 headers or 4 -1?

 

buy my jdm 4-1 and carsound. i would get 2.5 inch, leaves some room for improvement.

 

Id say a 2.5 in or less. If you are doing just mild bolt ons, a 2.25 or 2.36 (60mm) will be just fine.

 

between 4 2 1 and 4 1 whats the difference . one is low end and one is high end?

 

4-1 is more for high end.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by skunkintegra &raquo;</TD></TR><TR><TD CLASS="quote">without a turbo, or 250 N/A horsepower....

yes..... way too big</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by patmcd &raquo;</TD></TR><TR><TD CLASS="quote">Id say a 2.5 in or less. If you are doing just mild bolt ons, a 2.25 or 2.36 (60mm) will be just fine.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by deputyGSR &raquo;</TD></TR><TR><TD CLASS="quote">between 4 2 1 and 4 1 whats the difference . one is low end and one is high end?</TD></TR></TABLE>

Only if you're getting a "cookie-cutter" header. The custom ones like SMSP, Hytech, DTR, etc. combine the performance of both designs to achieve a broader powerband.

 

Comptech header also gains mid-range & high end just like SMSP, Hytech, etc.