Would an AF gauge (blinky lights) be useful when using nitrous? i searched and i can't find anything or find what i'm looking for.thanks ahead of time.

Blinky lights are ok as they give a "general" reading. Digital is the way to go. www.gadgetseller.com

Better yet, if you have the cash, go for a wideband for exact readings.

Second Place "Sanford Sound SLAP 2005" Mild 2-Door
http://www.sanfordsound.com/carwash2005.htm
Second Place "Scrapefest 2002" 2nd Gen Mild
1995 GS AT, 97-99 Conversion.
2000 BMW Z3 2.8
1999 Chevy K2500 crew cab
5 jets skis, 3 snowmobiles, 2 ATVs. BRAAP!
Member # 1147

Also useful with nitrous, EGT, nitrous pressure, and Fuel pressure.

Second Place "Sanford Sound SLAP 2005" Mild 2-Door
http://www.sanfordsound.com/carwash2005.htm
Second Place "Scrapefest 2002" 2nd Gen Mild
1995 GS AT, 97-99 Conversion.
2000 BMW Z3 2.8
1999 Chevy K2500 crew cab
5 jets skis, 3 snowmobiles, 2 ATVs. BRAAP!
Member # 1147

wow,thanks for the fast reply, so when i'm using nitrous and at wot and my gauge is reading rich, if it were to start to lean out it would start to decrease correct? and being to start reading lean, if that happens i would lay off the gas? i do'nt know if that made sense.

Mods: Short Ram Intake, Frankenstiened TB, EGR Block Off, Fart Pipe, Gutted Cat, UDP, ractive coilovers, 2"-3" drop, and more to come

wow you have a lot to learn about the O2 sensor. 1st what shot nitrous do you have? 2nd do you have a way to adjust fuel pressure? and 3rd why do you have your cat gutted, that also effects the O2 reading 'cause if the secondary O2 is not reading the correct emissions, it'll screw with the O2 readings. answer me these questions and i'll try my best to help you tune a bit.