Think I screwed up...Can someone check my math?

[dingo151]

Hi,

Couldn't figure out why it seemed like my 4.6 was running lean out of desperation I started going back and rechecking everything that I'd bolted on and ran my injector numbers.

I had a 0280-156-013 injector which I thought when I bought it was a 24lb injector but when I run through my calculator it keeps coming up as a 21lb. Guess that would be a little small for a 4.6 with a 231 cam, Borla header and 99 intake.

Was wondering if I'm doing something wrong?

Thanks!
Dean

[SilverXJ]

What year?

[dingo151]

Its a 91. OBD1 no tweaking

[SilverXJ]

Way too small. They flow 16.35lb @43.5 psi.Even less on the 39 psi rail. How long have you been running it like this?

Although a few sites list them at 22lb/hr, however sites like Stann Weiss, and other reputable list them at 16.35.

[Cheromaniac]

Way too small. They flow 16.35lb @43.5 psi. Even less on the 39 psi rail.

x2. Definitely way too small.

[dingo151]

Not very long....maybe 200 miles. Couldn't ever figure out why I was so lean....guess now I know. If I go to a set of Ford injectors A302's would they be big enough?

[SilverXJ]

What is an A302?

[dingo151]

Ford Motorsport 24.0lb/hr @ 39psi (Part no. FMS-M9593-A302)

[Cheromaniac]

Ford Motorsport 24.0lb/hr @ 39psi (Part no. FMS-M9593-A302)

I'm using those.

[dingo151]

THANKS!