To drive the ZR-1 or not??

[Gunny]

Originally Posted by Billy Mild

... It is a little loud...

Your signature states Borlas w/out center resonator. That should be a fairly free flowing, open exhaust w/decent performance but will be louder than stock and most likely will produce resonance or "drone" around 1500-1900 rpm, particularly in 6th gear, especially when pulling up a slight incline. Couple of things you can do to mitigate the drone: change to a lower gear so that you stay out of the 1800 rpm range. Also, try this: plug one outlet pipe on each side of your Borlas ... it should eliminate most, if not all, of the drone and quieten things down a bit. If that works consider installing flappers on your Borlas or get a couple of the flapper mufflers ... do a search on the forums; there are several threads about this.

Good luck