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45lb injectors 


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 Post subject: 45lb injectors
Posted: Mon Apr 16, 2007 5:43 pm 
Smokin em up

Age: 29

Posts: 236

Joined: 2nd Jun 2005

Location: melbourn
VIC, Australia

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?



4LTR-JET: 9.1 @150mph!!

Posted: Mon Apr 16, 2007 5:46 pm 
Getting Side Ways

Age: 32

Posts: 3402

Joined: 7th Feb 2005

Ride: AU2 Ute

Location: melbourne
VIC, Australia

Posted: Mon Apr 16, 2007 6:27 pm 
Fordmods Addict
User avatar

Age: 30

Posts: 7958

Joined: 1st Jun 2005

Gallery: 13 images

Ride: Falcon

Power: 237 rwkw

Location: Melbourne
VIC, Australia

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 ;)



ED XR8 Sprint - S-Trim, V500, 249rwkw
BF MKII F6 Tornado - 237rwkw

Posted: Mon Apr 16, 2007 10:28 pm 
Getting Side Ways
User avatar

Age: 27

Posts: 975

Joined: 26th Nov 2004

Ride: el falcon

Power: 608 rwkw

Location: Waroona
WA, Australia

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



# 1997 EL Falcon GLI - 600+rwkw

# 2008 FPV FG GTE - Xa Coilovers, 20x8/ 20x10 Fairladys

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