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need help with jetting

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alright iv got a 06 drz400sm, it's got the 3x3 mod, pro circuit T4 SLIP ON, and a twin air filter. Around here it's around 900 ft above sea level but i may ride up to around 4000, i have the dyno jet jet kit installed with a 155 main jet factory 22.5 pilot jet @ 3.5 turns out and bad backfires\popping on decel...i bought a 27.5 pilot jet and changed main jet to 150 (maybe too rich?)and in all gears (3rd gear the m0st) around half throttle it has a bad surge, went back to the 155 and it does the same thing...thanks in advance for any advice

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Your needle controls your mid throttle settings...Main Jet for WOT..at 3.5 turns you need to go up one size in pilot jet, not to 27.5..

http://www.thumpertalk.com/forum/showthread.php?t=327405

160 main jet

dj needle

clip 2

dj slide spring

22.5 pilot jet with extended screw or 25 pilot jet with stock screw

2.75 turns fuel screw

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