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You might have something with the vacuum leak theory. Does the car misfire while idling or purr along? If it misfires, it is likely running lean (less than 13.5:1 at idle) due to a vacuum leak letting in unmetered air. Stock RX7s run very rich of stoich at idle.
edit: My '86 would start at rev to some insane rpm unless the shifter was left in gear, when it would start, rev to about 1500 rpm and then settle down to a good idle.
If I had to guess, I would say that your idle setting (reached by placing the car in gear when starting) is too low (not 700-800 rpm, like you think).
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1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers)
1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)
Last edited by NoDOHC; 05-01-2009 at 11:06 PM.
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