bigSS

What size jets do you guys use for your NX kit? Specifically for a 100shot and 150shot? Last night I couldn't find my NX jet chart sheet, so I cruised around on the message boards and found one guy said to use a 52 N20/33 Fuel pill for a 100shot. Well, I got home and found my sheet, and it says to use a 52/31 ... and it goes on to say that to use the 33 for a 150 shot. I guess I should just ask you guys what you find works best for a A/F ratio safe 100 shot and 150 shot. And if 52/31 is the correct jets, how much of a difference would a 52/33 make, because the car pulled hard with those jets (first time N20 user).

Also, not that I am anyone to doubt NX, but on the N20 pill size, your jumping from 52 to 62... whereas on the fuel size your only jumping from a 31 to a 33. Doesn't that seem like an awfully small jump? Your thoughts on that as well.

Thanks.

Nitro Dave's Nitrous Outlet

iTrader: (25)

Alex,
Here are there most recent jet patterns for LS1.
N F
100-52-28
150-62-33

Ed Blown Vert

iTrader: (2)

I wish NX would make up there minds.
I have on my chart

100 52/31
150 62/33

I do run really rich on 52/31.

juiSSed1172

Fuel jettings are just a rough estimate based off of fuel pressure anyways..

Not much diff between the 28 & 32, just needs tuning like any big mod....

Dano 00TA

Yeah, nx is kinda lost on this? My jet chart states the following:
HP N20 FUEL
50 33 18
75 41 24
100 52 33
150 62 35

I never tried the 50 shot but the 75 gave me .7 in the 1/4 and ran great but the 100 shot jets I have caused problems running way too rich so I backed off to a 31 on the fuel jet and it ran alot better. So I guess all my fuel sizes are too rich?

bigSS

LOL, great, so we have 3 different fuel jets that you supposed to use for a 100 shot.

BTW, someone mentioned fuel pressure. I'm running a racetronix kit (supposed increase in fuel pressure by about 3-6 psi), how will that change my fuel pill selection.

Racetronix

iTrader: (2)

Under WOT the return fuel volume should fall back within the regulator's grasp allowing for proper regulation at apx. 58PSI.