if i do a mac cat back off of this
http://www.americanmuscle.com/v6duexadkit.html

will i see a loss of mpg??? cause im trying to decide if i should go with a y polt on or the ture duals with that adapter. and that might sway my descion. how ever i beleve that the adapter will add a few extra horses witch is always nice.

 

no, catback won't lose MPG...your foot will though.

 

yeah i read that in another thread and i just wondered cause the adapter kinda works like a mid pipe kinda. so i didnt know if that made any difference.

 

the main thing that will rich it the most is the headers, the mid-pipe might do alittle, but the catback won't change much at all.

when you get the bolt-ons and mid-pipe and catback done it is worth getting a tune because even without the upgraded parts you can lean the car out alittle and still be safe.

 

WIth that H-pipe from AM, you will get a deeper sound too!