zex and msd digital window switch
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zex and msd digital window switch
i just got through searching and i found alot of answers to my questions but i am still confused. i have the zex nitrous system with the msd digital window switch. In Zex's installation instructions, they tell you to connect the white wire to the output voltage lead on the tps. i connected the white wire to the blue wire of the tps at the throttle body like the directions said. now whenever the activation switch is off, my car idles at around 1300 rpms and the throttle position sensor reads 6 percent. when i turn the activation switch on and the window switch comes on, the car idols fine and the tps reads 0 like it should. does anyone know what could be causing this problem? is the voltage from the tps backfeeding into the zex box? any help would be greatly appreciated. thanks.
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also, the msd instructions say to have the box set on 1 cylinder for the ls1 engine. when it is in the 1 cylinder mode, the rpms on the box do not read right, they only read right when they are in the 4 cylinder mode, i have read that people leave them set on the 4 cylinder mode but i was just wondering what the difference was, if any.
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Originally Posted by to-fst-4u
is the voltage from the tps backfeeding into the zex box? any help would be greatly appreciated. thanks.
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Originally Posted by to-fst-4u
also, the msd instructions say to have the box set on 1 cylinder for the ls1 engine. when it is in the 1 cylinder mode, the rpms on the box do not read right, they only read right when they are in the 4 cylinder mode, i have read that people leave them set on the 4 cylinder mode but i was just wondering what the difference was, if any.
I have the Mallory window switch complete a circuit that activates a 30 amp relay that in turn completes my ground to the ZEX solenoids in the NMU. I have also inserted a simple 1 amp diode in parallel with the window ground and +12v power wire to this relay to catch any current which might find its way back to the NMU. I hope this is some help to you.
I have a Mallory 685 Hyfire and a ZEX 82026 wet kit.
Last edited by 01Z28M6; 07-23-2006 at 10:26 AM.
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#8
98redorangeta
do you have the zex kit and did yousolve the idle issue with the relay?Do you still have the kit? hows it working? Is it a quality system? Sorry for highjacking this thread.
do you have the zex kit and did yousolve the idle issue with the relay?Do you still have the kit? hows it working? Is it a quality system? Sorry for highjacking this thread.