hello guys,
my setup is 96 LT1, Eagle 383, Golen LT4 heads and ported intake manifold, EFI connection EARLY design 24x with 58mm DBW throttle body, Ford 30 lbs skinny red top injectors, Hedmann shorty headers, 3" magnaflow exhaust. fuel pressure regulator with new diaphram set at 58 PSI. GM LT4 hot cam kit, comp camp 1.6 rockers
car can't be driven on the open road since there are no hood, fenders, door, interiors and so on - just a small 150 meter trip on the backyard when no neighbours around.
I'm just trying to have the engine running good at idle to send the car to the body shop ASAP. I had hard time starting the engine due to various issues.
already check all wiring (3 times!) from ECM to injectors and coils and O2 sensor for proper connection, firing order, correct continuity and so on. everything ok
already swapped side by side all injectors, no changes, all coils no changes, O2 sensor no changes
already plugged vacuum source to Brake booster, no changes. 3 times checked MSD wires, all at 35-40 OHM of resistence, checked also inj impendance all at 15.9 Ohm
crank and cam signals are OK with scope and timing is ok dot to dot. rocker arms adjusted one by one and checked 3 times
2 weeks ago replaced intake manifod gasket adding a small lip of RTV Permatext 80003 (resistent to fuel designed for intake manifold too) because it not match perfectly the head on the bottom.
bank assignment on HPtuners is ok.
I try SEVERAL setup adding and removing timing or tweaking VE. I ALWAYS have RH bank reading really rich at start up above 900mv, then the fuel trims starts to work ... but clearly something is wromg. the engine react to the changing in the tune, but it's something else....
see the latest tune, log, and photo of the plugs. I put NEW plugs were fouled to check everytime I change sometthing 15 minutes at idle and same results.
I SUPPOSE plugs 7 and 8 can be fouled at idle due to manifold design, it is stock ported.
but no sense on plug 2 and 6.
any experience to share guys?
thank you so much
bye