map sensor readings
03-28-2005, 08:40 PM
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Car: 92 Z/28 clone
Engine: 383 carbed
Transmission: t-5
Axle/Gears: 3.73
map sensor readings
is there anyway to trick the ecm to think that the map sensor is reading lower voltage............
my problem is the map sensor is redaing like the throttle is at wot...........this is causing my car to run very rich.........my mods are in my sig
my problem is the map sensor is redaing like the throttle is at wot...........this is causing my car to run very rich.........my mods are in my sig
03-28-2005, 08:53 PM
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Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
How about finding out WHY your map sensor is lying? Fix it once, fix it right, and don't worry about it agian. (well, until the next time anyway, but, hopefully, that will be a while...)
03-28-2005, 09:39 PM
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Car: 92 Z/28 clone
Engine: 383 carbed
Transmission: t-5
Axle/Gears: 3.73
Originally posted by GTA matt
I've seen big camshafts mess with the vacuum at idle, making the fuel pressure regulator add more pressure causing it to run rich. Is this what you mean by your question?
I've seen big camshafts mess with the vacuum at idle, making the fuel pressure regulator add more pressure causing it to run rich. Is this what you mean by your question?
my map is reading 3.0 to 3.5 v at idle...........about 50 to 60 kpa at idle......my fuel pressure is set at minimum but the ecm is thinking i'm at wot and making the injectors stay open longer
03-29-2005, 07:56 AM
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Car: check
Engine: check
Transmission: check
A '92 TPI is a speed density system. Then some parts: Comp Pro Mag 1.6 rockers.Lt4 hot cam.Corvette Lt1 injectors.
It will be running quite rich at low speeds. And probably lean at high engine speeds/loads. Need to tune it, that's all. Basically the VE tables are now way off. And the injector constant needs to be changed.
RBob.
It will be running quite rich at low speeds. And probably lean at high engine speeds/loads. Need to tune it, that's all. Basically the VE tables are now way off. And the injector constant needs to be changed.
RBob.
03-29-2005, 05:50 PM
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Car: 92 Z/28 clone
Engine: 383 carbed
Transmission: t-5
Axle/Gears: 3.73
Originally posted by RBob
A '92 TPI is a speed density system. Then some parts: Comp Pro Mag 1.6 rockers.Lt4 hot cam.Corvette Lt1 injectors.
It will be running quite rich at low speeds. And probably lean at high engine speeds/loads. Need to tune it, that's all. Basically the VE tables are now way off. And the injector constant needs to be changed.
RBob.
A '92 TPI is a speed density system. Then some parts: Comp Pro Mag 1.6 rockers.Lt4 hot cam.Corvette Lt1 injectors.
It will be running quite rich at low speeds. And probably lean at high engine speeds/loads. Need to tune it, that's all. Basically the VE tables are now way off. And the injector constant needs to be changed.
RBob.
i just payed out my **** for a custom chip that isn't doing it's job..........and i haven't gotten used to burning my own......
03-30-2005, 10:49 AM
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Car: 1986 IROC-Z
Engine: 355 TPI
Transmission: 700R4
Axle/Gears: 3.23 Posi
Where did you get your custom chip, as I am in the market as well? I need one burnt myself....
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