Im looking for some advice. I was on the dyno this past weekend, and i couldn't get my bottom turbo to spool on the dyno. I regularly on the street light it up and i can hit 100PSI, on the dyno i maxed out at 55 psi. I dyno'ed 275Hp, when i should over 600hp almost 700hp.
My twins are hx40 with a ht60 bottom, its an auto a518.
I was thinking a tranny swap would be a good idea, or maybe i should directly feed my bottom turbo from my manifold.
And ideas would be great, im not sure were to go now.