z28pat

iTrader: (10)

just dyno'd my car with my NX wet 75 hp shot,
the cars mods are CAI, pacesetters and true duals,
it's an 02 A4 z28, and it
put down 329.8rwhp and 339rwtq at a mustang shop
the air/fuel ratio was 12.9 N/A,
on the spray
it put down 393rwhp and 430rwtq but the air fuel
ratio went to 11.9 on the first spray run and 12.0 on the other nitrous run,
I was told I can just change the fuel pill to make run richer,
I'm using the 75 HP pills right now (41F and 22N i believe)
so How much higher on the fuel pill should I go?

pat

Airwolf

iTrader: (2)

???
You are running a little richer at those A/F ratios on the juice, just where you should be.
I must be missing something....

LoWeLL216

iTrader: (1)

I must be missing something as well...

smoknta

Are you thinking the lower the number the leaner you are? 14.7 is stoich. 12 is richer. 16 would be leaner.

nitrousboyWS6

iTrader: (19)

Are you sure on the pill sizes? The fuel should be smaller then th nitrous.

XTrooper

A 12.0:1 air/fuel ratio = 12 parts air to 1 part fuel.

The lower the number, the richer the mixture.

NXRICKY

iTrader: (1)

Hp is a little off for a 75 hit, but your a/r is fine.. What was the bottle pressure at the begining of the run.. should have been 1050 psi.

Ricky

CAT3

iTrader: (9)

Ditto on the jets sizing, think its backwards. Now if you were LEANING out, as in going from 12.9afr NA to say 14.5 afr on spray, then you would have some issues. Going from 11.9 one run to 12.0 the next is nothing to worry about.

cantdrv65

iTrader: (3)

You're actually slightly on the rich side...but safe.

Elite_Hot_Rod

I like mine at 11.5 to 11.8 personally.

z28pat

iTrader: (10)

Well, I guess I am severly misinformed,
so it's safe, to go from 12.9 A/f ratio without spray to
11.9 on spray?

pat

Airwolf

iTrader: (2)

Actually safer then your 12.9! 12.9 is perfect fo N/A and the lower number on the juice is very safe - FAR from lean.