TPI Converting mass to map
04-05-2008, 07:01 PM
#1
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Car: 91 GMC Jimmy 2DR
Engine: 4.3L now soon TPI V8
Transmission: 700r4
Axle/Gears: not sure yet
TPI Converting mass to map
Hello everybody,
I own a 91 GMC JIMMY that I'm pulling the 4.3L out and putting in a TPI V8. The TPI unit I have uses a Mass Air Flow Sensor and I would like to convert it to use a Mao sensor. Can I just tap the hole on the plenum where it should be. This unit also has the cold start injector. I don't have the harness or computer yet. I plan on getting the computer and harness from Painless Performance. Besides getting new stuff what can I do?
I own a 91 GMC JIMMY that I'm pulling the 4.3L out and putting in a TPI V8. The TPI unit I have uses a Mass Air Flow Sensor and I would like to convert it to use a Mao sensor. Can I just tap the hole on the plenum where it should be. This unit also has the cold start injector. I don't have the harness or computer yet. I plan on getting the computer and harness from Painless Performance. Besides getting new stuff what can I do?
04-05-2008, 07:35 PM
#2
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Car: 67 Firebird Convertible
Engine: LB9
Transmission: 700R4
Axle/Gears: 3.55
Re: TPI Converting mass to map
You can just not hook up the cold start injector. I've done that a couple times, or find the right size freeze plug for the injector hole, and silver solder up the end of the pipe just out of fitting.
You can tee off one of the other fittings if engine is together, but try to stay away from the map supply.
You can tee off one of the other fittings if engine is together, but try to stay away from the map supply.
04-06-2008, 01:47 PM
#3
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Car: 91 GMC Jimmy 2DR
Engine: 4.3L now soon TPI V8
Transmission: 700r4
Axle/Gears: not sure yet
Re: TPI Converting mass to map
What do you mean stay away from the map supply.
04-06-2008, 02:44 PM
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Car: 91 GMC Jimmy 2DR
Engine: 4.3L now soon TPI V8
Transmission: 700r4
Axle/Gears: not sure yet
Re: TPI Converting mass to map
My Truck wiring is gone, bought the truck for 35$ with title and a good body.
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No harness in truck.
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No harness in truck.
Last edited by 4.3LMan; 04-06-2008 at 02:46 PM. Reason: Automerged Doublepost
04-06-2008, 06:08 PM
#6
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Car: 67 Firebird Convertible
Engine: LB9
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Re: TPI Converting mass to map
I've always been told that you should run full vacuum to the map sensor, and not split it off.
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