Just installed a set of Motordyne ART pipes I scored on Ebay. Went to Amplified Motorsports on Saturday and they were able to put them on within 90 minutes. Great job!
On a cold start, it is considerably louder than what I had with just the Invidia Exhaust. However, when it warms to normal temperature, it idles just like before. One negative to the ART pipes is the smell of fumes at idle is very noticeable especially when the windows are vented.
I did not reset the ECU after the install. Driving home (30miles) from Amplified, I was not very impressed. The car felt very sluggish. When I drove the car today, WOW what a difference. The car was very responsive. Very happy with the way the car performs. Below 3K RPM, the car sounds just like before. But when you open it up a little bit, the car growls. Very throaty. Sounds like an aggressive sports car. I was worried that the car would be too loud. Not the case at all. I think it sounds just right. There is a slight drone at cruising speed, but not loud enough to be a nuisance. I didn't notice any rasp either. Very pleased with this mod.
YouTube - No ART pipes
YouTube - ART Pipes