I can accept a small decrease in TQ below 4,800. So the dansk muffler gave you the big increase in noise level I'm guessing but it only gave you about 3 more hp if I am remembering correctly. Keep us posted. Aftermarket performance parts can be tricky as I just discovered with my horrible experience on the B&M SSK. I am starting to get an idea of the frustration that you are facing all well.
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