I'm going to buy a 2.5" carsound cat, and need to know the flange/o2 bunge loc. specs on the cat for a stock SI. I beleive from jacking it up and looking that it was 2-flanged in/3-flanged out with the o2 loc. at the back.

 

Anyone know this..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EM1VtecSi &raquo;</TD></TR><TR><TD CLASS="quote">I'm going to buy a 2.5" carsound cat, and need to know the flange/o2 bunge loc. specs on the cat for a stock SI. I beleive from jacking it up and looking that it was 2-flanged in/3-flanged out with the o2 loc. at the back. </TD></TR></TABLE>

Correct. If you're using the stock exhaust manifold, it's a 2.00" flared 2-bolt flange at the inlet, and a standard 3-bolt flange at the outlet. The O2 bung will be fine as long as it's located downstream of the catalyst.

 

why do you want a 2.5" cat?

even if you get a 2.5" collecter on your header it wont do anything unless your running a supercharger.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chads &raquo;</TD></TR><TR><TD CLASS="quote">why do you want a 2.5" cat?

even if you get a 2.5" collecter on your header it wont do anything unless your running a supercharger.</TD></TR></TABLE>



A quality header with a 2.5" collector paired with a 2.5" Car Sound will certainly provide performance gains on an N/A setup.

 

a whapping .7 whp if your running aftermarket cams.

and if your not running cams say good bye to what little tq. you had

 

Thx for the info Padawan. But why can't anyone ever agree on this forum

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chads &raquo;</TD></TR><TR><TD CLASS="quote">a whapping .7 whp if your running aftermarket cams.

and if your not running cams say good bye to what little tq. you had</TD></TR></TABLE>

I honestly have no idea what you're talking about, or where your figures came from, but you're clearly misinformed.