89 IROC ECM#?
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Joined: Apr 2006
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From: Pgh PA
Car: 89 5.7 IROC/95 LT1 Corvette
Engine: All 5.7's
Transmission: 700R4 (Roessler)/ZF6
Axle/Gears: 10 bolt Zexel 3.23's. CTW 17" wheel
89 IROC ECM#?
Anyone know where I can get a stock GM "chip" for an 89 IROC 5.7, auto? Can anyone tell me the part number for this "chip"? Thanks. My "new" IROC has an aftermarket chip in it and I want to return it to stock GM for now. Thanks again!
Joined: Jul 1999
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: 89 IROC ECM#?
AUJN is the code for a stock 89 350 with dual cats and 3.27 gears. GM just raised the price however from $50 to $300.
Thread Starter
Senior Member



Joined: Apr 2006
Posts: 835
Likes: 0
From: Pgh PA
Car: 89 5.7 IROC/95 LT1 Corvette
Engine: All 5.7's
Transmission: 700R4 (Roessler)/ZF6
Axle/Gears: 10 bolt Zexel 3.23's. CTW 17" wheel
Re: 89 IROC ECM#?
Thanks Kev, I'll check out the Chevy dealer tomarro, Thanks again.
Thread Starter
Senior Member



Joined: Apr 2006
Posts: 835
Likes: 0
From: Pgh PA
Car: 89 5.7 IROC/95 LT1 Corvette
Engine: All 5.7's
Transmission: 700R4 (Roessler)/ZF6
Axle/Gears: 10 bolt Zexel 3.23's. CTW 17" wheel
Re: 89 IROC ECM#?
Chevy says, No gots none of. Oh well.
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From: New Hampshire
Car: 86 MCSS-87 Z28
Transmission: Auto OD-5spd
Axle/Gears: 3.73 both cars
Re: 89 IROC ECM#?
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