When do you need larger injectors?
Thread Starter
Teching In
Joined: Sep 2003
Posts: 19
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From: Laurel, MD
When do you need larger injectors? I have a '98 TA that has a stock bottom end w/ common bolt on ugrades, CAI & LT's w/ cat back and while replacinging the clutch I've decide to go ahead and install the LS6 stage II heads & intake and mild 226 cam pkg I've been sitting on for quite a while. While I'm at it I was wondering if installing a fresh set of larger injectors would be a worthwhile investment for this and future upgrades (LS3 short block)? Like title says are larger injectors (36#) a good choice at this time or would it be a waste of money & fuel with little to be gained. Thanks for any suggestions
personally i would use LS3 stock injectors... should be easy to tune...and im sure they will support 600hp plus... if you ever look at the g8 2300 for the gxps, they dont include injectors... so i believe ls3s should suffice in 99 percent of all motor builds
My understanding is when you up to +85% duty cycle the injectors start losing the ability meter fuel as accurately. Get at least 36's, if you have any possibility thought of getting more HP out of your engine then get a set of 42's.
I have a '98 TA that has a stock bottom end w/ common bolt on ugrades, CAI & LT's w/ cat back and while replacinging the clutch I've decide to go ahead and install the LS6 stage II heads & intake and mild 226 cam pkg I've been sitting on for quite a while. While I'm at it I was wondering if installing a fresh set of larger injectors would be a worthwhile investment for this and future upgrades (LS3 short block)? Like title says are larger injectors (36#) a good choice at this time or would it be a waste of money & fuel with little to be gained. Thanks for any suggestions
The issue is getting improper fueling. If you have an injector that is giving you consistent fuel delivery, then why not, sure.
From RCENG:
"Most injectors will operate up to 80-85% duty cycle without any issues. Exceeding the maximum duty cycle will basically cause the injector to go static. The transition from a dynamic state to a static one will cause the injector to become unstable for a brief moment. Typically, the injector pulse width will operate past this "dead zone" rather quickly and go wide open. "
"Most injectors will operate up to 80-85% duty cycle without any issues. Exceeding the maximum duty cycle will basically cause the injector to go static. The transition from a dynamic state to a static one will cause the injector to become unstable for a brief moment. Typically, the injector pulse width will operate past this "dead zone" rather quickly and go wide open. "
