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

am i getting enought fuel?

Old Aug 24, 2010 | 02:09 PM
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Piston454's Avatar
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Car: 1990 RS Camaro
Engine: 400 sbc throttle body
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Axle/Gears: 3.73's, Detroit TrueTrac
am i getting enought fuel?

i have a 1990 rs camaro that came with a 305 tbi and i swapped it out with a 350 and but the original tbi back on. i dont believe it is getting enough fuel. can i swap out the injectors with some 55 lbs/hr ones? or can i not do that? (the originally had 45 lbs/hr)
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Old Aug 24, 2010 | 02:33 PM
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Re: am i getting enought fuel?

That or run TPI pump and increase FP with stiffer spring..
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Old Aug 25, 2010 | 03:44 PM
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Car: 91 Trans am
Engine: built 360 TBI
Transmission: built 700r4
Axle/Gears: 10bolt/3.23
Re: am i getting enought fuel?

Originally Posted by Piston454
i have a 1990 rs camaro that came with a 305 tbi and i swapped it out with a 350 and but the original tbi back on. i dont believe it is getting enough fuel. can i swap out the injectors with some 55 lbs/hr ones? or can i not do that? (the originally had 45 lbs/hr)
Your stock TBI came with #55's from the factory.

As Ronny suggested, higher fuel pressure or "biggher" injectors will increase fuel delivery.

It is mandatory to adjust some numbers in the bin wen changing fuel delivery, EBL would be the best option for this purpose.
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