I have just purchased a 1990 350, speed density tpi engine, injection and harness. My question is will the signal from the vats module have changed from 1989, which had mass air flow, to 1990 speed density. Street and Performance told me it is a different vats module. Does it produce the same signal? If anyone knows, I would be a huge help. Thanks.

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89'Camaro Convertible,96'firebird wheels,79'Z28 hood scoop, 3.27 posi disc brake rearend,36mm front sway bar, 24mm rear bar, Poly sway bar bushings and end links, Dark yellow green paint from Bonnevilles, tan Mr. Mikes leather interior,Macewen white face gauges.
Dreaming of a RamJet 350,

Open element
Jet fan switch
180 degree thermostat
Flowmaster cat back system
2nd place is always the first loser!

 

I believe that it is. I think that the TPI/TBI require a 50 HZ signal and the LT-1 require a 30 HZ signal. I will look this up later today and post a correction if it is not correct.

John

Heart of Texas Power and Performance