I was thinking of buying some refurbished injectors off Ebay, but then I read this:
"stock injectors are 24 lb hr. While there are multiple brands making 24 lb injectors they are NOT the same and anything other than stock ACDelco ones will require a PCM tune to adjust for them."
Will the car still run without a tune after non Delco injectors are installed?
Trying to minimize complexity/steps/vehicle downtime … thanks in advance for any insight.
1st of all, not all 24lb/hr injectors are actually rated equal.
The complete rating for LT1 injectors:
24 lb/hr @ 43.5 PSI
(many forget the PSI rating)
If you do not have BOTH the lb/hr AND the PSI [at the fuel pump], you have an incomplete rating, thus you can't be sure if they actually flow the same or not.
2nd, even with two [sets of] injectors rated, say, 24 lb/hr @ 43.5PSI, they still must have the same OFFSET (response timing).
If the offsets differ, the injector[s] will open &/or close faster/slower than expected/intended.
In other words:
if both the flow and the fuel pump pressure ratings are not EXACTLY the same, the tune will need to be adjusted to compensate.
if the injector offset is not EXACTLY the same, the tune will need to be adjusted to compensate.
A closed loop tune may be able to compensate for injectors that are flow-rated within 5% of the original spec, but that's asking a lot.
Doubt that any closed loop tune would be able to compensate for injectors with varying offsets.
Can't answer your last question. Describe your car in your sig ONCE, and you'll never need describe it again. (I'll venture a guess that 96 MIGHT handle it better than 94/95, but I'll never try it; can you guess why?)
Consider the following alternatives if you want zero complexity:
(I still haven't decided which I'll use …)