Borla Exhaust

[j.fro]

I've got the Borla with headers and bypass pipes on my car. At WOT it's over 96 decibels, and the SCCA guys have kidded with me at autocrosses that they were going to get out the meter and send me home...good thing they like the sound. As to resonance, it's so damn loud that it doesn't matter. Here's an interesting one, though. When I went to a larger throttle body, I think what resonance I had decreased.