jungspike

Just got done with engine rebuild. Engine runs good accept at WOT it gets lean. Starts out at 11-ish at low RPms and climbs to 15-ish by 3 to 4k. Here is a Datascan of the data. Any ideas?



What we have:
• S13 SR20det Redtop with stock internals
• G28 Turbo
• Wablro 255 high pressure with dedicated 12 gage wires from battery
• MAF from Ebay (Chinese—checked for coronavirus)
• AEM AFR wide band O2
• EGR delete
• Charcoal canister delete (vent to atmosphere)
• No BOV (plan on adding after its running)
• Z32 370 CC injectors (purple and new)
• Z32 fuel filter
• ISR adjustable FPR
• Stock 62 ECU (opened up and confirmed stock)
• Wiring Specialties wiring harness
• Datascan
Electric fans (coming on at 160 deg F--need to adjust)
What we know:
• Timing verified at 15 BTDC (light and Datascan)
• Double checked CAS and mechanical timing
• Boost leak checked (20 psi)
• Compression: good
• Test TPS with Datascan (car off): 0.45 and 4.1 volts
• Vacuum leak: checked (with smoke)
• Fuel pressure jacked up to 70 psi, still leans out
• Checked exhaust leaks
• At Idle:
o Fuel pressure around 41 psi (set to 44 with engine off)
o RPMs: 900
o Vacuum: -20 Hg vacuum
o AAC at 10% when warm
o AFR around 14 to 15
o Alternator Volt: 14 (measured at alternator and battery)
o ECU voltage around 13.0 volts
o TPS showing closed on DataScan/Consult.