B13turbo93

just got this 92 TT 300zx and it barely runs it idles very bad and stumbles when the gas is pressed and wont rev above 2200-2500 rpm's when you let off it stalls on itself i checked the codes its throwing the 12,33,and 34 can the maf just be dirty or maybe its not grounded properly any info is appreciated, oh and the motor is brand new remanned motor.

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Completley gutted, Falken Azenis tires on black jax light wheels with 96 Ga16de block with 93 head loaded with 96 cams exhausting through stock pipe into Bassani muffler,and Exedy stage 1 clutch an pressure plate.

apudapus

you need more punctuation in your post.
12 is air flow sensor - try cleaning the connectors
34 is detonation sensor - do a detonation sensor relocation

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NA > TT Converted, OBDII > OBDI
AshSpec ECU, Stillen intake, Specialty Z complete 2.5" exhaust, Snow Performance water injection, Setrab oil cooler, Koyo radiator, Z1 intercoolers
SS brakelines, Eibach lowering springs, KYB adjustable shocks
HKS turbo timer, Greddy boost controller, Apex'i SAFC-II

JSPEC Front Bumper, Kazera KZ-A Michelin Pilot Sport
Philips HIDs 4300K