I have a 87 GTA TPI that had a engine fire. R there any differences bewteen IROC and T/A TPI wiring, besides the charcoal canister on different sides,ect. I am wondering about the fuel injectors in where they get there + fused power on the Iroc. My ta has a seperate connector other than the 15 pin connector at the computer end of the harness that has pink/blk for the + power to the injectors. where do I look for the iroc's wires at. also anything else that I would have to change? ------------------ 89 Iroc 350 TPI, Forged pistions Comp roller Cam .510 lift 230dur Flowmaster exhaust Dart Iron Eagle heads 200cc runners 64cc chambers MINI RAM SOON!!!!! stock TPI for now 24# inj 87 Trans Am GTA 350 TPI had engine fire hope to get running soon Flowmaster exhaust

ANYBODY???????????? SOMEBODY OUT THERE HAS TO KNOW SOMETHING!!!!!! NEED TO GET RUNNING WITHOUT FRYING THE LEAST AMOUNT OF COMPUTERS AND OR MODULES

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89 Iroc 350 TPI,
Forged pistions
Comp roller Cam .510 lift 230dur
Flowmaster exhaust
Dart Iron Eagle heads 200cc runners 64cc chambers
MINI RAM SOON!!!!!
stock TPI for now 24# inj
87 Trans Am GTA 350 TPI
had engine fire hope to get running soon
Flowmaster exhaust

I don't know what the differences are if any. I only have an IROC so i'm not going to be a whole lot of help.
Your signature says that you have an IROC and GTA. Both MAF TPI cars, why not look for yourself as to what differences there are?

Brendan

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1987 IROC-Z L98,SR,EB 6085's,LPE 219/219 SR Cam, Crane 1.6RR, EB TPI Base, 58mm TB, Stock T5, ADS 24#, AFPR, K&N, EB TES, Catco Cat, 3" Borla Cat-Back, Accel cap,rotor,distro/other crap, Aluminum DS, 94 Disk Rear, Adjustable Prop Valve, Precision 3.73 Gears, Weld in Sub-Frame Connectors, Hotchkis LCA's, KYB Shocks/Struts, Poly Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm, Big stereo, 730SD Conversion.

To see the ROC, Check out the webpage Here

The GTA had a engine fire, I have a wiring harness from a 1987 iroc. So therfore I have 2 wiring harnesses for IROCS One for the 89 and one from a 87. THe wiring harness from the T/A was destroyed.

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89 Iroc 350 TPI,
Forged pistions
Comp roller Cam .510 lift 230dur
Flowmaster exhaust
Dart Iron Eagle heads 200cc runners 64cc chambers
MINI RAM SOON!!!!!
stock TPI for now 24# inj
87 Trans Am GTA 350 TPI
had engine fire hope to get running soon
Flowmaster exhaust

An 87 TPI IROC and an 87 TPI Trans Am should have similar wiring harnesses, except for the battery and charcoal canister being on opposite sides, like you said.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

Well so far I have found several differences, especelly with the 15 cavity connector wired with the ecm wireing. Like the fuel pump output from relay to pump, coolant fan relay coil + power is also different, brake switch signal, fuel injector + power is on a different connector!!. But I have now acquired a manual for a 86 trans am and a 88 iroc. SO FAR the wiring is the same for the T/A as in the 86 manual and the same for the comp. harness as in the 88 iroc manual. I think I have everything sorted out and now the ecm has power and now the ses light now comes on when I turn the key on,(never did before), so I hope Im on the right track.

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89 Iroc 350 TPI,
Forged pistions
Comp roller Cam .510 lift 230dur
Flowmaster exhaust
Dart Iron Eagle heads 200cc runners 64cc chambers
MINI RAM SOON!!!!!
stock TPI for now 24# inj
87 Trans Am GTA 350 TPI
had engine fire hope to get running soon
Flowmaster exhaust

[This message has been edited by AaronIROCZ (edited July 23, 2001).]