[kodyo]

Originally Posted by Cartman

I wish I could say the same, but in reality, my car lost tq down low, making it seem as if the tq dip was eliminated as you can see when you compare the full bolt ons with FT86SF header (122ish tq @3Krpm) and with stock header (132ish tq @ 3KRPM)...

This header could have great potential, but only if you go catless.

If you're gonna go with the catted version, leave everything else stock to take advantage of it.

For science, a local guy has this header as well

His car has: FT86SF catted header, 3" Catless FP, 2.5" perrin cb, 3" overpipe, Intake manifold spacers, Supertek pipe + drop in, HKS Intake duct

Managed to get 170WHP with a tune on that dyno, and 180whp on a dynojet with 93 octane.

My car did 170WHP as you can see from the dyno sheets wiith the header, Perrin 3" catted FP, 2.5" overpipe, Manifold spacers, K&N drop in filter, invidia Q300 catback, and stock tune on 91 octane.

It did 181WHP on a dynojet with 93 on stock tune and 186WHP tuned with the stock catback. But like I said, I'm pretty sure I would have gotten those same numbers with stok header with better low end tq, although having the dip at 3K vs a flat tq curve.

It was hard to compare the two graph with and without the header due to the scales being off, so I made one so you can compare. Dark Green/Dark Blue are with the header installed for your setup.

Not perfect, but I think it's pretty close (and I messed up the bottom tail of the HP curve).