is 2.5" straight pipe too much for N/A b16a with few mods??

 

i would go with 2.25 but thats just my opinion

 

bump!

 

60mm is optimal size = 2.36", but yes use 2.25

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BauleyCivic &raquo;</TD></TR><TR><TD CLASS="quote">60mm is optimal size = 2.36", but yes use 2.25</TD></TR></TABLE>

Just out of curiosity, how did you determine that 60mm is optimal?

 

Thats what the apex'i exhausts are y0! and by word of mouth...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BauleyCivic &raquo;</TD></TR><TR><TD CLASS="quote">Thats what the apex'i exhausts are y0! and by word of mouth...</TD></TR></TABLE>

I personally prefer a more objective approach.

Edit: Regarding the original question though, there's obviously more to an exhaust system than simply piping diameter, and I'd concentrate on finding one that it well designed and constructed rather than focusing solely on the size. I personally think that a properly built 2.5" system would perform extremely well on the car, but so too would a 2.25" or 60mm system, assuming they are all of equal build quality. My preference always leans toward the larger side in terms of piping though.

 

i have 2.5 on my hatch. i like it

 

1 square inch of exhaust for ever 60hp. Do the math and 2.25" will support 240hp. Of course this assumes a free flowing exhaust. I'd recommend 2.25" or 60mm.