I'll fill everyone in while Jason is driving the car up to me
The bigger header made more power. A good amount more power. It filled in the evil torque void even more, and with header, overpipe/downpipe, and catback, the whole system made 21whp over stock and 15wtq over stock, with 11-15wtq gains in the evil torque valley.
The valley isn't 100% filled in. But... I am guessing that tuning can get it the rest of the way there.
Jason is also switching the car back to the stock midpipe (front half of the catback) because they are pretty sure that part doesn't make any real power. He has some amazing ideas on some improvements to the system (already... these guys are constantly improving their design) and as he said, all customers who ordered the catted downpipe that haven't had it shipped yet will get the new design that integrates the overpipe section into it. Free of charge for existing orders. Amazing. two upgrades in one, with a better flow design.
So for right now, the car will have the larger headers on it (they are wrapped at this time), downpipe, and axleback. I'll take it to Pacific Raceways tomorrow. After a few more days with the car, I'll hand it back over to Jason to see if the car has made any more power with ECU adjustments over time, like we saw with the axleback/downpipe combo.
I can't thank Jason and John, and all the guys at Nameless enough. Constant improvement on their designs, and they are fully backing every single development part they put on my car.
They will be working on catless parts next week, from what Jason is saying.
I'm sure Jason will chime in with the dyno graphs, better explanations, and findings tomorrow AM, like he says- but I hope this tides you guys over until then