gauging interest: modified exhaust - ZR-1 Net Registry Forums

Aurora40 · 09-14-2008

After a 70 mile trip to a dragstrip this weekend, in 95+ degree heat with the windows up and A/C on, I think maybe I've decided to go Corsa for exhaust. I just am sick of the resonance at highway speeds with the windows up. Around town or with the windows down I love how the car sounds. 90% of the time I totally love it, 10% I hate it. I guess I'd rather 100% of the time just like it (I don't love the Corsa sound nor look).

Anyway, it's stock 2.75" pipes. The resonator is the LT4 one. And the mufflers are Dynomax Ultraflow SS 3" mufflers with stock square tips. The pipes have been modified for headers/cats, but I have the cut-off flanges so an exhaust person could set them up for use with stock manifolds again.

With stock manifolds, the resonance is not as bad. It is worse than stock but better than a B&B. My car gained 25whp on a Superflow dyno with the exhaust modification.

It would be local pickup as I think cutting it up would make it probably not worth the effort for anyone.

09-14-2008	#1
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,713	gauging interest: modified exhaust After a 70 mile trip to a dragstrip this weekend, in 95+ degree heat with the windows up and A/C on, I think maybe I've decided to go Corsa for exhaust. I just am sick of the resonance at highway speeds with the windows up. Around town or with the windows down I love how the car sounds. 90% of the time I totally love it, 10% I hate it. I guess I'd rather 100% of the time just like it (I don't love the Corsa sound nor look). Anyway, it's stock 2.75" pipes. The resonator is the LT4 one. And the mufflers are Dynomax Ultraflow SS 3" mufflers with stock square tips. The pipes have been modified for headers/cats, but I have the cut-off flanges so an exhaust person could set them up for use with stock manifolds again. With stock manifolds, the resonance is not as bad. It is worse than stock but better than a B&B. My car gained 25whp on a Superflow dyno with the exhaust modification. It would be local pickup as I think cutting it up would make it probably not worth the effort for anyone. __________________ Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img]