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Injector selection for a 91-95 HO

3XJFamily

NAXJA Forum User
Location
Austin TX
OK, I've got a 95 4.0 HO longblock in my 91 XJ (91 intake and computer) auto / np242. When I put it all together, I used Accel injectors rating 21 lbs/hr @ 44.1 psi - I didn't think about them netting less than 19 lbs/hr @ 39 psi. 91 - 95 HO engine use 21 lbs/hr @ 39 psi only mods are a banks header (factory cross-over) and a hi-flow cat and muffler. I am considering some minor intake mods.

So. . . for the moment I've got a lean condition but help me understand: Is this just an issue at idle? Just at Wide Open Throttle? How well does the computer compensate?

Dealer prices on injectors were ridiculous when I checked (but I may have a line on a discount). If not (credit Dr Dyno), these may be my next choice:
Accel 24.4lb/hr @ 44.1psi (ACC-150124) = 21.6 @ 39 psi
Chevy LT1 24.0lb/hr @ 43.5psi (Part no. 17124248) = 21.5 @ 39 psi

Anyone got experience running these injectors?
 
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