Tarzan and rhino are on point. Cost me 35 bucks to verify the map and it had a stage 1 loaded. It will easily handle a Ness bug sucker or torque tubes and sounds like you got the stock air box K&N so it could very well be TPS. I would still look at the little stuff.
If by chance the map is jacked I would go back to stock and add a PCIII up front with torque tubes when the time comes. No sense in buying a stage one just to put it back stock for a fuel controller. Or you could leave it I guess. Sorry. Sidebar
2011 White Vision - Nuvi 550, Lowers, Lloydz 2nd filter, Vic perf filter, CB/Icom, 96 Brake LED's, Clear Signal lens/Switchbacks, VIC Hwy Pegs, Stebel Horn, 7Jurock 15" Shield, PCV, Lloyd ATS and Variable intake, Ness honkers
2004 V92 TC - S1 flash, level 1 slip-on, Ness big sucker K&N, ISO Grips, 4x1.5 Highway Hawg Risers, extra chrome (never too much), JM 2k CB 4' antena, Mustang seat, HD Front TS & Lowers, OD Pulley
Retired Navy SCPO