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aftermarket fuel injectors with factory ecu

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Old Mar 20, 2011 | 08:24 AM
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Default aftermarket fuel injectors with factory ecu

im rebuilding my engine and i found a set of fuel injectors for cheap. im planning on going turbo after i run the car n/a for a bit.. ie break-in procedure

will the aftermarket injectors work fine with a stock ecu? the car needs to be started then towed to a tuner but I'm not going to start the car with the obd2 ecu and load a base map just to start it.

ill swap in the obd1 + harness once im leaving for tuning
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Old Mar 20, 2011 | 08:53 AM
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Default Re: aftermarket fuel injectors with factory ecu

no they will not, the stock ecu only knows how to run one time of injector, the fuel injector battery offsets will be wrong, and the car will run pig rich since they are bigger then the OEM injectors
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Old Mar 20, 2011 | 09:49 AM
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Default Re: aftermarket fuel injectors with factory ecu

Wont work unless you have a chipped ECU and recalibrate for increased injector size.

How big are the injectors you are looking to buy?
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Old Mar 20, 2011 | 12:05 PM
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Default Re: aftermarket fuel injectors with factory ecu

Originally Posted by Spawne32
no they will not, the stock ecu only knows how to run one time of injector, the fuel injector battery offsets will be wrong, and the car will run pig rich since they are bigger then the OEM injectors
oh i imagined that the stock ecu could calibrate the aftermarket injectors and work at whatever load the ecu is supplying to the injectors. i believe is 245cc

Originally Posted by Gunmetal_B20_Hatch
Wont work unless you have a chipped ECU and recalibrate for increased injector size.

How big are the injectors you are looking to buy?
i got a great deal on id1000 injectors, there more than enough but I found them for 300 bucks
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Old Mar 20, 2011 | 01:08 PM
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Default Re: aftermarket fuel injectors with factory ecu

if you tried to start the car on 1000cc injectors you would just flood it out instantly and it would never run lol thats like trying to spray a fire hose with fuel in your engine
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Old Mar 20, 2011 | 01:18 PM
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Default Re: aftermarket fuel injectors with factory ecu

oh and to give you an idea of what im talking about, starting my car on the factory ecu tune with 420cc injectors installed, my AFR is 9:1 at idle
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