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View Full Version : What size injectors with these mods?

stang2nv95
06-30-2003, 06:50 AM
2003 v6. fully ported heads and lower intake, SSM upper intake, CAI, 90MM MAF 65/70mm TB...

also, are 94 - 98 injectors compatible with an 03?
Bloodninja
06-30-2003, 06:53 AM
90mm maf on an NA car...? :uhh:
stang2nv95
06-30-2003, 07:14 AM
perhaps I misunderstand....cai, porting, bigger maf = more air. Then if you can match the fuel ratio, you'd be good to go. Then once the car has boost, bigger injectors for new A/F match...no?
Bloodninja
06-30-2003, 07:32 AM
Not with the MAF. There's a such thing as too big. That 90mm lightning
MAF is meant for a blown application, which has to meter from idle to a peak
of way more air than you'll ever be flowing n/a. You'll be using a very small
part of the voltage range. You'll do better with a smaller maf.
Jared
06-30-2003, 08:24 AM
i thought the lightning MAF was 80mm.


as far as injectors... ill let somene who knows the answer answer that one. :)
stang2nv95
06-30-2003, 08:36 AM
ah, ok I see.

1. What size MAF would be ideal for the n/a setup.

2. Then, based on the new MAF size and the mods above, what size injectors.

3. are the 84-98 injectors good on an 03?
stang2nv95
06-30-2003, 08:37 AM
i thought the lightning MAF was 80mm.




they have both an 80mm and a 90mm
SteveC
06-30-2003, 09:12 AM
21 or 24lb injectors should be fine. Since most of your stock harness will still be intact, the 24s would be easiest, but I'm sure you have 21's so you can just splice the harness ends and use those.

You can use a 80mm Lightning MAF, but I would consider using a 80mm off a GT because of the resolution of the curve since it will be NA. 90 is too big IMO.
stang2nv95
06-30-2003, 09:46 AM
21 or 24lb injectors should be fine. Since most of your stock harness will still be intact, the 24s would be easiest, but I'm sure you have 21's so you can just splice the harness ends and use those.

You can use a 80mm Lightning MAF, but I would consider using a 80mm off a GT because of the resolution of the curve since it will be NA. 90 is too big IMO.

so would a set of 24#s that you have work on the 03?
SteveC
06-30-2003, 09:49 AM
so would a set of 24#s that you have work on the 03?

I had a set of only 2- 24's but they are sold.
stang2nv95
06-30-2003, 09:52 AM
yea, I just noticed that...
Nytebreed
07-01-2003, 03:39 AM
Stock injectors and MAF would be fine with that setup.