I had the shop do everything for me.
All I have is a car jack, not enough for an entire exhaust job(although others will disagree, I'd rather not venture into trying that)
So yeah, I used a muffler that they had there, set me back about 175 for the muff.(2.5 inlet, dual 3 outlet)
Definite power gains, it's quite incredible to drive a car normally for a couple months, then do something major to increase HP (like an exhaust job) and feel how fast the car responds.
Like now, the tachometer screams through the revs after 3 rpm, before it would find it's way up to 6, now it wants to go to 6 and beyond, I really love it, and I am making fans everywhere (people on the streets, and high school kids that see me screeching through turns, or peeling out in gears can't help but say something like "whoooohoooo" or "oh shit"
And every damn day I get a ricer that wants to race, it's quite fun handing them their ass, makes me feel all mighty. Muahahahahahaaa <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/cool.gif" border="0" valign="absmiddle" alt='
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