Quote:
Originally Posted by lovehamr
I'd bet on header/collector gaskets. It's a fairly common issue with Cobras. Check your header gaskets and where your headers connect to the intermediate pipes. If air can get in either of those places back-firing on decel will occur.
Steve
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+1
it doesn't take much of a leak either........and you may even get "some" popping on decel at high rpms without an exhaust leak,the engine is not under a load, basically "coasting" and the fuel is not all burnt as when under a load, so some unburnt fuel will go thru the hot exhaust,burning in the side pipes, causing the popping.......
HP wise guessing 400 to 450 with a lot more torque......
David