so i have an 06 si and just ordered my injen cold air intake....ok thats that now im debating on the exhaust now which will most def be a skunk2 not sure to get the 60mm or 70mm i have done some research but just wanted your opinions...is there a huge difference ? like can you straight out feel the power given to you by both ??? thanks a billion

peace it

 

I have heard 70mm is for turbo later on, and 60mm for N/A setup. If you aren't going crazy with turbo, I guess 60mm is pretty good.

 

Yeah, if your going to be doing some simple bolt ons then the 60mm should be fine. If you decide to get a turbo or S/C then go with the 70mm or larger. 10mm isn't really going to make a huge difference in numbers

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yuning83 &raquo;</TD></TR><TR><TD CLASS="quote">I have heard 70mm is for turbo later on, and 60mm for N/A setup. If you aren't going crazy with turbo, I guess 60mm is pretty good. </TD></TR></TABLE>
x2
couldn't have said it better

 

alright so 60mm would be the best thing for me then plus its much cheaper lol thanks a lot for your input

 

Also 60mm is a "TAD" quieter then 70mm

 

I just ordered the 60mm LSD set up. im sure that will work fine for me now. in the future if I SC or turbo I will see how it works with the 60m and go 70mm if I need to. like others have said 10mm is not that big of a size diffrence and I would like to keep the noise down to a min.

 

Go 70mm i have it with the bcrh and aem cai good power