A question of exhausts

Shamrock

SS firehawk. You say shortie headers gain 5WHP. So what kind of gains are long headers giving? You are saying that most of the gains are achieved through replacing cats and exhaust? Which is how much while keeping stock headers.

Nick what are aams?

SS_Firehawk

I do not have gains I've made with just my Long Tube Headers, but most that have them gain 20 whp on the conservative side, and 30 whp at the high end.

I made 30whp with PPE Long Tube Headers, Motordyne XYZ Y pipe with the cat option, and Tanabe exhaust. This was untuned and with a faulty O2 sensor. My baseline was 270 whp, and with the full exhaust I was at 300 whp.

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