Agree with above sounds like a idle control problem. The ecm might need time to relearn settings after a cleaning. Check your install for any vacuum leaks if problem continues.
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94 CAMARO
TURBO 3.5 LITER
12.573 @ 107.29 1/4 MILE
8.021 @ 86.38 1/8 MILE
BEST 60' 1.781
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