I just upgraded from 42lb lightning injectors to deka 60lb injectors, and entered all the injector data from the references pages. When I updated the AHISL, all values in the FN036 MAF curves scaled up around 30%. I dialed in the MAF and now they are around 8% higher than they were on the 42lb injectors. This means the RAW MAF is about 25% lower than it was.
Fuelling is great, I have no errors over 5% and most within 1-2%, but the load is now less than 1.10 under boost, where it used to be in the 1.45ish range. Have I made a mistake somehwere, or is this normal with larger injectors?
If it's normal, what should I do to compensate for load to get into the area of FN2200 borderline Knock where I should be in while in boost?
Thanks for your help
Paul
MAF scaling when resizing injectors
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SOAB_465
- Posts: 32
- Joined: 2022 Dec 06, 15:24
- Location: Alberta, Canada
- Vehicle Information: 1998 Ford Mustang GT 5 speed box code BAI1, CRAI8
stock return fuel system with Walbro 255 in-tank pump and aeromotive adjustable regulator.
2008 4.6
PI Heads and Cams
9:1 forged pistons
Forged H-Beam Rods
60lb Deka injectors
BA2800 MAF
2.3L whipple supercharger intercooled approx 13 PSI
- tuning with TunerProRT
PLX Wideband
GM 3bar MAP