which fuel injectors

[theSOB]

i have the f22a1 with h23 im. what injectors should i use? f22 or h23. are they any different? would injectors from any othe engine fit/work better? i have an N/A plan probably wont be making more than 200 hp

[GhostAccord]

H23- F22 are both the same. If you want to go with a few more cc's buy a set of 93-96 H22 injectors. They are plug and play low impedance 345cc.

[StinkinLincoln]

H23- F22 are both the same. If you want to go with a few more cc's buy a set of 93-96 H22 injectors. They are plug and play low impedance 345cc.

Do they have to be tuned??

[theSOB]

Do they have to be tuned??

H23- F22 are both the same. If you want to go with a few more cc's buy a set of 93-96 H22 injectors. They are plug and play low impedance 345cc.

thanks, i might just go with those then

[GhostAccord]

Do they have to be tuned??

Like anything else you add to your engine. If you don't get it tuned it won't run as efficiently as it should or add any more power.

In this case a stock ECU would end up cutting the injectors pulse width if the primary O2 is always reading rich. The ECU has short term and long term fuel trims. If the ECU is constantly seeing rich readings it will cut the injector pulse width until it reads stoich measurements. (14.7:1). Therefore it would pretty much make your 345cc injectors run like a 240cc. Or it will run rich for a limited amount of time and then probably throw a CEL.

From my own personal experience. After adding a set of 280cc injectors to a stock F22B2. I monitored the STFT & LTFT with my Palm using PocketLOGGER™ OBD2 data logging software. I noticed that after the ECU was reset the STFT was reading 0%, while the LTFT also read 0%. By the end of that same day the STFT was reading -5% & LTFT was up to -11% ( The "-" = cutting % of fuel). After only 3 days the LTFT was at -22% and the ECU was throwing CEL P0172. O2 out of range/System too rich. The operating range for the LTFT/O2 during closed loop operation is ±20%.

[kronikally420]

"After only 3 days the LTFT was at -22% and the ECU was throwing CEL P0172. O2 out of range/System too rich. The operating range for the LTFT/O2 during closed loop operation is ±20%."

Good info, I won't be spending money on injectors. thanks

[deevergote]

There is no reason to run larger injectors on a near-stock engine.

[WhiteGhost]

Well the factory plays it safe and tunes it for the best gas milleage so, I would get a chipped p06 ecu and get it tuned..I did it and it runs better for a fact with stock injectors...A good tune is always good