Ok...heres the story.

I sold my 88 Vette and thought I sold the PROM with the car. A few weeks later I came across it. I put it in the IROC and it works great except sometimes I get a code 42 EST problem.

Anyways...the Vette had the 3.07 gear, A4, and exhaust and intake mods. TPIS made the PROM for those specs.

The IROC has the mods in the sig.

Anyhow the PROM works excellent except when I turn on the A/C it throw a code 42.

Any ideas?

Comments on running that PROM?

------------------
Mike L.

"If it feels good - stay in it "

1987 IROC Z TPI 350 A4 3.27 Borg-Warner.

Mods: 2300-2500 Stall Converter, Shift Kit(GM parts), TPI Specialties Stage 3 PROM, Modified Airbox w/ K&N's, homemade cold air, Relocated MAT sensor, Gutted MAF, 160* thermostat, Accel 8mm Wires, bypassed TB coolant, Flowmaster 3 chamber single 3" in/out muffler, 3" MAC mandrel intermediate, custom dual !cat Y-pipe. airfoil, ported plenum. !smog

http://www.MichaelLasiuta.home.att.net

**BOYCOTT LAPEER DRAGWAY**

 

Can anyone satisfy my curiosity?

PLEEEEEZ!!!!!