Helping and posting for a friend. 2001 special edition gtp with stock pulley and dhp 1.5 tune with a mild custom tune i had done. Car has cai, 3"dp, stock manis, u-bend delete.
Has ported gen 3 m90 that gets around 9-10psi. Currently gets constant 2-3* kr.
So far he has changed/added the following:
255 walbro fp with rewire
Fuel filter
Injectors
Fpr
Plugs/wires
Hi speed fp relay pin 85 bent
Tested fuel pressure:
Idle is ~45psi and drops to steady 40psi
At wot is constant 57-58psi
Checked for vac leaks but found zero. Idle vac is ~17-22inHg
We're both boggled. Only thing left is swap pcm with a 2000 gtp PCM from a local.
He has a zzp afc 1.2 and adding 2% didn't change the amount of kr or fuel pressure at wot.
edited: buddies car is a 2001 and added he removed the u-bend and that it's a special edition
