TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

injector swap

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Old May 25, 2012 | 12:25 AM
  #1  
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injector swap

ok so im new here and just got a 92 rs well it has 19lb injectors i belive well its tbi wich is 2 injectors (correct me if im wrong) if i put a Motorvation 192012-T chip on it and 24lb injectors would it run right? would i notice a big diffrence? if i didnt switch injectors would i notice any diffrence with throttle response with the chip? if 24lb injects is to much would 21lbs with the chip make a diffrence and still run right?
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Old May 25, 2012 | 01:38 AM
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Re: injector swap

Originally Posted by rigsboo
ok so im new here and just got a 92 rs well it has 19lb injectors i belive well its tbi wich is 2 injectors (correct me if im wrong) if i put a Motorvation 192012-T chip on it and 24lb injectors would it run right? would i notice a big diffrence? if i didnt switch injectors would i notice any diffrence with throttle response with the chip? if 24lb injects is to much would 21lbs with the chip make a diffrence and still run right?
On a mostly stock L03 you should be running 40 lb/hr
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Old May 25, 2012 | 08:18 AM
  #3  
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Re: injector swap

i thought that they were 19lbs stock...on summit racing if i search by vehicle i can only find up to 24lbs
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Old May 25, 2012 | 02:22 PM
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: injector swap

Originally Posted by rigsboo
i thought that they were 19lbs stock...on summit racing if i search by vehicle i can only find up to 24lbs
It looks like you must be looking at tpi mpfi, for a lb9 they are 19#hr and L98 22#hr.

A tbi L03 would use these

http://www.summitracing.com/parts/SMP-TJ4T/
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Old May 25, 2012 | 03:56 PM
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Re: injector swap

If you have a relatively stock engine. You do not need an injector upgrade. What you can upgrade and get a few more HP out of your engine is the fuel pressure regulator. Their is a thread where you can make your stock regulator adjustable. Or you can purchase an adjustable fuel pressure regulator for it. I think Jet, and motorvation makes them.

Other than that. You can do all the ultimate tbi mods.

Put headers and full exhaust on the car
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