Exhaust - let's talk about this one!

[BudUMfan]

Silver, where you from? I passed a silver MS3 last weekend by Somerset mall. I waved but the driver did not see me. I'm a noob too, but TP was pretty easy, as was the cobb inlet.

[Silver Ecstasy]

Nope, wasn't me. I'm in Wayne Cty, not out near that mall.

[erod550]

Originally Posted by Silver Ecstasy Nah, someone put the fear of God in me, that running "over the shelf" tunes were never EVER a good idea. As everyones car, is different. So you cannot generalize the tune.

So just spend the extra $300-400 and have a professional custom tune it. Then you know you have a good safe tune made for your specific setup. I have no plans to tinker with the tuning myself once I get an AP. I'll get a protune and set it and forget it.

Back on the topic of the thread, the stock cat-back is plenty sufficient for making good power until around 300whp. I have always read that 2.5" is good to 300whp and over that you want to go 3". The restriction is in the downpipe and cats. So if you were looking for noticeable gains from the catback alone it's no surprise you seem disappointed. Like the guy at the shop where I dyno says, get the catback for sound, get the downpipe for power. I happen to like both sound and power so I ordered both.