injector size

jhysock · Aug 22, 2009

is there anyway to tell what size injectors are in a vehicle??? 89 stang with no real crazy mods just cold air intake, svo alum heads, f303 cam (i think) msd igniton, full exhaust underdrive pully's. plugs are pure white and have tried everything vac lines, maf,computer, increased fuel psi, car is not spittn any koeo or koer codes anymore i would like to get bigger injectors if it would help in performance and fix this problem but i'm not to familiar w/fi vehicles :hail2:

Dino Dino Bambino · Aug 22, 2009

Orange injectors (stock) = 19lb/hr
Blue injectors (the ones you need) = 24lb/hr
Red injectors = 30lb/hr

Whenever you upgrade injectors, you also need to have the MAF recalibrated with a new transfer curve for the new injectors (or buy an aftermarket MAF with the calibration already built in).

jhysock · Aug 22, 2009

i've read that 24 lbs injectors will work ok with the stock maf anything bigger and u need to upgrade ur maf also will a custom chip like sct 5 bank help with my lean problem? :shrug:

2000xp8 · Aug 22, 2009

Mass air meter and injectors must match, regardless of size.

A chip will just be like throwing money away.
Nothing you have there is extreme and needs a chip.
Never use a chip to cure a problem, it's just a bandaid.

jrichker · Aug 22, 2009

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