Holley EFIWhat are you using for a crank trigger? If you're unsure of #1 TDC, you may want to look at a trigger wheel like this: https://www.holley.com/products/igni.../parts/556-109
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What are you using for a crank trigger? If you're unsure of #1 TDC, you may want to look at a trigger wheel like this: https://www.holley.com/products/igni.../parts/556-109
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https://forums.holley.com/showthread...op-dead-center (Related Forum Thread)Originally Posted by wglennwarren
May God's grace bless you in the Lord Jesus Christ.
'92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.
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Your RPM signal is fine. It's picking up cam & crank properly, and RPM is not dropping out. This means there's no issue with the signal quality. However, I have no way of telling if it's picking up #1 properly. Since your cam signal is so wide, it's important to have signal in the proper spot so it knows where #1 is. I would verify that the signal is in the right spot.
However, mentioning methanol, what kind of fuel pump are you running? If a mechanical they tend to need a LOT of Cranking Fuel if the fuel pressure is low during cranking. I've seen 2 psi fuel pressure.
As far as Target AFRs, try 4.5 at idle & 5.2 WOT for an N/A engine. Yes, methanol engines want to be richer at idle.
Also, I see in your configuration you have a WASTE FIRE setup (four coils). I do NOT suggest that for methanol at all. I'd change that to individual coils. Also, it likely means you are getting spark at the right time.
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