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Thanks for that link rh77 I looked over my exhaust sestem today and it has the stock hf small manifold cast iorn then fact cat then is where they went t 2 1/4 " stainless my 87 looks like 1" mabe 1 1/4 " like a go cart I think at first I am going to ex perment by changing to a smaller tip and see where my 1700 rpm power goes I like the artical but it failed to mention the aspect of the re ingestion of nox during valve over lap to cool or stabalize the burn on the older FE engines I think that my head temp is probably to hot do to the small to large the exhaust is probably stagnating I wonder what size oem was
may just run a staight pipe that could be my tattle when I am suffering from size 11d disease,Thanks Paul
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