I have a 87 ROC 5.7 TPI a friend has a Preformance Chip from a 88 ROC 5.7 TPI. Can I use it or at least try it out with out causing any problems.

87 ROC 5.7 TPI K&N's gutted air boxes, Hooker Cat Bak system, 160 t-stat, Thottle body by-pass.

 

There weren't any major diff between '87 and '88 so it won't hurt to give it a try.

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Mike

'90 IROC, 5-speed, ZZ4, & Trick Flows
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It may throw a code since it was setup for your ecm.

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86Z28, GM 350, Jet perf Q-jet & chip Dual snorkel air cleaner, Edelbrock performer intake, Edelbrock headers, Edelbrock cat-back, Off road pipe, MSD 6AL, Accel Super Coil, Moroso Blue max wires, Rapid fire plugs, Jet fan switch, World class t-5, Hurst Short Throw Shifter, Ram Flywheel, Center force dual friction clutch,Aluminum drive shaft, BW disc rear 3.45's & a posi, PBR calipers, Earls braided brake lines, Polygrapite bushings all the way around, poly tranny mount & torque arm mount, Hotchkis lower control arms & panhard rod, Rancho limiter straps, KYB struts & shocks, Gm Wonderbar, Edelbrock strut tower brace, SSM sub frame connectors, Jamex lowering springs, Carbon metallic brake pads, Crossed drilled rotors, Mobil 1 Tranny fluid & motor oil, GM syntheic rear end oil, K&N, Grant stering wheel, 1,200 watt system, Jet Black Paint, 91 Z28 rims, 92 wing, Tinted windows.