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07-13-2003, 09:47 AM
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#1 |
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Registered Member
Join Date: Sep 2002
Location: TEXAS
Posts: 161
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My friend is Running WAY lean
We went to the dyno yesterday, my buddies got a 340HP Ford Crate motor in his 93LX hatch.
he pulled 271hp and 294 tourqe at the wheels, But his power curves were not smooth, and his Air/Fuel readings were starting out at 19:1 and finishing at 15:1. I was told that was running way too lean and 12:1 was where it should be. he's running 24' LB injectors, 65mm TB, C&L powerpipe with 76mm Mass Air. The problem is we have his FPR cranked to 55psi with the vacuum off!!! and that is way too much, but its still running lean  I know the FPR doesnt make that much difference, so what could be wrong? The computer, or the mass air's not calibrated? what should we do...Oh I pulled 251 and 290 at wheels with no cam, and Iron heads  in my ride |
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07-13-2003, 10:04 AM
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#2 |
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Registered Member
Join Date: Apr 2003
Location: ATX
Posts: 20
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Upgrade the fuel pump.
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Stock. |
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07-13-2003, 10:15 AM
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#3 |
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Registered Member
Join Date: Sep 2002
Location: TEXAS
Posts: 161
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190lph in it....
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07-13-2003, 10:16 AM
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#4 | |
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Registered Member
Join Date: Apr 2003
Location: ATX
Posts: 20
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Quote:
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07-13-2003, 12:26 PM
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#5 |
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Registered Member
Join Date: Jun 2003
Location: Novinger, Mo
Posts: 72
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When I installed a cold air intake it made my check engine light come on (Lean mixture left and right banks) so I installed an adj. fuel pressure regulator and bumped it up to 42-45 psi at idle. Still the light came on, come to find out the MAF sensor wire had a lot of gunk on it so after cleaning the light stopped coming on and I ended up setting the fuel pressure at 33psi.
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95 GT w/ AODE and Transgo Shift kit, trans cooler, SpeedCal, KB 1.5 Flowzilla w/ 6# pulley, MAC chrome CAI, chrome radiator hoses, stock MAF w/ center post removed, 70mm PP TB, electrical boost & FP gauges, digital A/F gauge, 1 5/8" unequal headers, 2 1/2" ProChamber h-pipe, Borla catback exhaust, and 3.55's. Cobra RR hood, Saleen double wing, Xenon body kit, chrome Cobra R wheels 17X8 in front and 17X10.5 in the back. |
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07-13-2003, 09:41 PM
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#6 |
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Registered Member
Join Date: Sep 2002
Location: TEXAS
Posts: 161
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hmm ill take a look at that for him
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