Quote:
Originally Posted by Blt2Lst
I wouldn't think a 3/4" diameter hole would flow much exhaust but i suppose if the cat is clogged solid it would make a difference. .
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with the hole open , this should improve the engine power issues, not make it run perfectly just improve it . ya its small but it will give you the needed info if the exhaust is restricted.
I have seen muffler baffles get loose and plug the exhaust it can happen also.