I have a R32 RB25 de that has been fully rebuilt with forged pistons treated rods all ARP bolts Tomei cams (256) performance valve springs ect and it really doesn't wont to rev it drops a cylinder (sometimes) when you try to rev it at all past about 5500rpm the turbo is only a R34 Gtt high flow running about 19psi, sounds like I’m having the same trouble as you? I’ve checked everything else a number of times e.g. coil packs. My new set up I have is a Gt3076r with 0.82 rear, Turbosmart 50mm gate and 6boost manifold, I’m worried that when I put on this set up the problem will only get a lot worse, what can be done to get rid of the problem?? I’ve spent heaps on this motor and this is just really pissing me off.
Cheers