rpm cutoff on stock ecm
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Joined: May 2003
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From: Houston-katy
Car: 1986 Irocz- Houstons Fastest Street
Engine: 408 LS1 w/ 2 stage
Transmission: Turbo 350
Axle/Gears: 3:73,3850 lbs , best of 9.92 @ 138
rpm cutoff on stock ecm
on my stock 86 tpi ecm, what is the rpm cutoff? is there a rpm rev limit? or a fuel shutoff? just want ideas on my stock ecm's parameters. thanks
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Joined: Nov 2003
Posts: 462
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From: Ft. Leavenworth, KS
Car: 83 TA, 89 TTA, others
Engine: ZZ4 TPI, LC2 turbo v6
Transmission: several, mostly broken
Most stock ECMs have fuel cutoff, that can be triggered either by MPH or RPM (or both). Note that both of these are set via the chip, not the ECM itself. Not knowing exactly which chip you have, I wouldn't even guess where yours might be.
If you know the broadcast code that specifically identifies the calibration you're using, we might be able to tell you, especially if it's one of the common ones. Or, if you have the correct equipment, reading the chip will provide the answer.
If you know the broadcast code that specifically identifies the calibration you're using, we might be able to tell you, especially if it's one of the common ones. Or, if you have the correct equipment, reading the chip will provide the answer.
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