Does it idle low when you're sitting at a light in Neutral, or when you start the car and let it warm up? If both those instances have normal idle, I would agree w/ Titan on the vaccuum leak, or even possibly a hose somewhat "collapsing" when your RPMs fluctuate when down-shifting.
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Lauren
'91 300ZX TT Ultra Red 5-speed - JWT POPCharger, JUN flywheel, ACT clutch, Energy Suspension Bushings, Tokico Blues - dyno'ed 295hp/306tq
'94 300ZX TT Black Emerald Pearl 5-speed - JWT POPCharger, JWT ECU w/ Stillen chip, Stillen exhaust, Tokico Blues, Eibach ProKits, 18" Enkei RP-01 wheels - dyno'ed 333hp/385tq
'00 WS6 Trans Am Bright Red 6-speedFOR SALE - only 29k miles, stock, fully loaded, only $23,999 (NADA $26300)
Green Country Motorsports
Northeastern Oklahoma SCCA
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