Problems with 2002 subaru wrx , passing too much gas, not passing 5,000 rpm's?

Question:
i have try everithing i can think of and is burning too much gas, passing too much unburn gas...

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i change

Dodge Caravan 1994 3.3L v6?

mass air flow sensor--------
spark plugs---------
2 O2 sensors
throttle control ---------
ecu -------

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i got no misfire no check engine at all, and the motor will not pass 5.000 rpm's and it would chock,

What are the best plugs for a 2002 WRX?

turbo if fine but i have some exaust smoke out of it

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help me im new with subarus i only work with nissans

How do you know if your chevy 454 is fire-ing?

so please help me '' dont answer if you dont got any idea, or if you dont know nothing about subaru''

Answers:

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What type of modifications do you have on it? What type of ECU are you using? I think it just needs to be re-programed. Check your air and fuel filters.

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Plugged our collapsed Catalytic Converter restricting exhaust flow and creating too much backpressure.

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Smashed exhaust pipe?

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your turbo actuator (wastegate is stuck in slightly open position..) thats reduced the boost pressure but the ecu still sensing ure on-boost the ecu still giving more gas..

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2003 ford windstar won't start after a dead battery?!?

your back cat exhaust is clogged check the up pipe and other pipes too much open throtle on the ecu settings. give it a shot and email me and tell me if i right id be interested to know. subykid12@hotmail.com

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