Well hard to say what was happening w/ the Z1 manifold. Since last year this is what changed:
new tires
275/35/19 305/30/19
new wheels
SSR SP3 19x9.5 and 19x11
oil cooler
I'm waiting on dyno run files. Tuner didn't really spend too much time on it. He did about 4-5 pulls and came back saying it's not doing anything. I guess, thanks for trying?