
11-28-2009, 09:24 AM
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CC Member
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Join Date: Dec 2001
Location: Castalia,
Oh
Cobra Make, Engine: EM cobra, 450 inch sbc running a best ET of 9.14..so far..ALL MOTOR...approx 800 horse.............ERA with 482 FE..All Aluminum Engine
Posts: 1,395
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Not Ranked
Actually Jim used my car as his prototype for the Cobra. Do they work?? Maybe. I think it all depends on the state of tune of the engine. It did quiet my car down. At 15' at idle my car was 104 db, with the STB installed, I believe it went down to 97 db. At the drag strip, was a different story, I lost 16mph and 1.5seconds in the 1/4. A mild output engine could possibly benefit from these, but IMHO and engine such as mine, will probably lose some power.
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Jack
XSSIVE .....
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