Muffler replacement huge horsepower gains!

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#15 (permalink)

04-15-2009, 06:05 PM

CobraEd

CC Member

Join Date: May 2000

Location: Northern VA, VA

Cobra Make, Engine: Classic Roadsters

Posts: 2,765

Not Ranked

I have stainless steel glasspacks that I had Lucien Donofro of Arizona Exhaust make up for me about 7 years ago. 4" outer diameter, 3" inner diameter. Louvers facing backward. From the time I put them on I noticed a SIGNIFICANT increase in power, but upon any deceleration of engine RPM, you get the sound like papper fluttering in the wind at the outlets.

Who cares.

.

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