Re: ZZ4 Crate engine with 1989 Tpi upper
Did you do an iac reset after adjusting the tps and changing the iac sensor? If not I would start there. Fuel pressure at the rails is usually between 45-50psi for tpi systems.
03 Lq4. On3 78/75 turbo. VsRacing 33x12x4 intercooler. Godspeed 50mm bov/50mm wastegate. Ljms stg 2 cam. 317 heads(milled .030,trunion bushings,btr valvetrain). Ls6 intake. Ls7 maf. Qtp 3 inch cutout, Gmmg muffler. Original 9 bolt rear,3.27 gear