Quote:
Originally Posted by Semprini
Is running a single cat on this car that dirty? Also, the guys have pointed me at a catted header from ft86speedfactory that would make this a non-issue. I'm not trying to gain 2HP at the cost of pollution - the initial headers I was looking at did not come in a catted version. I definitely don't want a loud stinky fart car - was just looking to swap to something at some point that got rid of that torque dip and made a slight rumble like I've heard with a UEL and a quiet exhaust.
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1 cat is plenty. It's not stinky. Even a double catted car going WOT you're going to smell it. That's about the only time you'll smell something, but regular cruising and driving, not anything out of normal. You will be fine with a catless header and a catted front pipe. It even gets real quiet with a Q300 as some have heard that setup on my car in person. It's real tame... I'm running an N1 now though for the deep WRX rumble. Much louder, no rasp.