Well I am in the process of getting my 670 set up. Now I have not started the car but I was getting the TPS voltage and the best I can get now it .68 to wide open @ 4.50 Is this correct or what numbers should I be shooting for. I was under the inpression that .68 was ideal @ idle and 4.6 and up was where we was wanting to be. But I can't get the WOT voltage up with out raising the Idle voltage......... ANY IDEAS Brian Felts ------------------ 1989 Camaro RS 305 .030 over Hydro Pistons Vortech heads milled to 58cc...Performer RPM intake....LT4 cam..Crane Gold rockers...FastChip custom chip...ALum. Driveshaft...3.73 gears with Posi...underdrive pullys...Rebuilt 700R4 with Vette Servo and B&M shift Kit...MSD ignition...A/C Delete No SMOG junk....1997 SS leather interior...B&M Shifter... Ultimate TBI mods...14X3 K&N open Element Non-Drop...Hooker headers....3" exhaust with Flowmaster Cross flow 16X8 Wheels from 97 RS Spohn LCA's Spohn Panhard Bar..LETS PLAY FORD!! www.geocities.com/feltsb

I believe those numbers are close enough, ie 4.50V are within normal WOT specs, but maybe Grumpy knows what the PROM has built into it for WOT.

I thought WOT voltage wasn't an issue just as long as the voltage change was dramatic over a short period of time. I know that's how TBI systems work with the tcc lock/unlock and most other operations.

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, Jon (350 TBI!)
91 Red My website

hey brain
i set mine at .54 or try to get around that i dont want it to be any higher because i already run rich and that would just cause it to run more rich. i dont know if this is true but i herd that if you go above .6 it would set off a code. can someone clear this up for me?

Brian as long as the Voltage is large enough to kick the Computer into WOT range nothing else matters. at idle like anything belo 1 volt the computer reads it as a basic 0 anyways. Well not rally, but it doesnt matter to it because it is controlling your idle with the IAC. I would sy your fine unles 4.5Volts is below WOT mode.

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89 Trans Am Turbo 3.8L All stock 43,000 miles #1053 of 1555

Past Thirdgen:
86 Trans Am w/ built 355TPI with SLP goodies and too much other stuff to List. One sweet *** car, wish I would have had a good enough Job to pay insurance on three cars so I could keep it, but for a 89 Turbo Trans Am w/ Low miles, I think I made the right choice!

Isn't it funny, I just stepped in from playing with the TPS on my Holley Pro-Junktion TBI.

I had the same problem, the idle voltage won't go below .640 and the WOT is 4.7 (signal is 4.9).

The problem I'm having is with WOT.

Idle, choke, acc pump, cruise, and midrange (to 3/4 throttle) is almost perfect. As soon as I go WOT it breaks up BAD (sounds/feels like an MSD rev limiter).

I'm gonna post this myself in a min, just thought you'd like to know you're not the only one out there.

Good luck,

JK

PS, I'm using the Holley controller, not a factory ECM.