running rich on 150 shot, what size jet now?

i put my car on a dyno with NX 150 shot, it runs 13.5 A/F ration on motor, when i hit the n2o it goes down to about 11.2 A/F ratio. is this too rich? the kit only made about 100 RWHP on a 150 shot (might be big stall eatin it up)the fuel jet for the 150 shot is 38, should i lean it out a little? if so, how much of a smaller jet should i get? thanks for any help

Chad

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1994 Trans Am: 4 bolt main Corvette Block, Lunati 383 stroker kit, LT4 intake, 58mm BBK TB, 26x11.50 M/T ET Streets, K&N FIPK, Nitrous Express wet kit, 4" mufflex catback, ported MAF, taylor wires, Russel wire looms, NGK TR6 plugs, Hooker LT's, Canton oil pan, 94 to 95 opti conversion, cloyes double roller timing set, meziere electric h20 pump, MSD ignition, 3600 vig. stall, transgo shift kit,GTP6 Cam,1.6 rockers, tall aluminum fabricated valve covers, ported and polished heads,.373 gears, eibach pro-kit, bilstein shocks,no AIR, no CAT,no EGR, no A/C, Ed Wright dyno tune and a few other odds and ends
best 1/4: 11.1@128.7 MPH on crack--how long can the stock rear last?!
license plate:HU'ZNXT

***This is entirely on your own and I take no liability if something happens to your motor.***

First I hope you were at 1050PSI bottle pressue on the dyno. If you were and your still rich I would drop the fuel jet one size. Be careful and test this on the dyno first. Your shooting for a 12.0-12.5 AF on the dyno on spray. Each motor is a little different so your milage may vary

I have the NX kit,and am running a 33 fuel jet for my 150 shot,i also have a 255lph intank if that matters. Even a 35 was tooo fat for my car,so thats when i dropped back to the 33.
This is MY setup,and do what Aaron said to play it safe.

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Dirk
1997 TA A4, Finally Legal to 10.00 (now i just gotta get it to go that fast)
The RacinLT1 (http://hometown.aol.com/racinlt1/myhomepage/index.html)
RacinLT1 pic's (http://photos.yahoo.com/racinlt1)

ok thanks guys, i would never blame anyone for advice given to me, im just looking for ideas and other people's modifications. I was at full operating pressure, i have the NX bottle heater. i'll probably drop it down to a 36 jet and put it on the dyno to see where it is. thanks again

Chad

[This message has been edited by TAChad (edited June 12, 2002).]