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45lb injectors 

 

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HiBoost
 Post subject: 45lb injectors
Posted: Mon Apr 16, 2007 5:43 pm 
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just got 45lb injectors today and put them in, however that car run crap.... backfire and shaking........... took them off and put the oldones in and was ok. do i need aftermarket computer for these injectors?

 

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Dansedgli
Posted: Mon Apr 16, 2007 5:46 pm 
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Yes.
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Steady ED
Posted: Mon Apr 16, 2007 6:27 pm 
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Any drastic change in injector size is going to need a tune of the ECU.
The ECU just pulses the injector a certain amount of time to inject the fuel.
So if a replacement injector injects more fuel for that given time, it'll run rich as, like you have discovered ;)

 

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fritzz
Posted: Mon Apr 16, 2007 10:28 pm 
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i noticed on your sig u are getting a t70 and a new exhaust manifold soon,

i think u should really be getting a after market ecu before u go any further.

yes u need a ecu to run pretty much any injector over 30lb

 

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