wierd stalling issue

[RB20_240SX]

hey guys so i recently pulled out my rb20 from my 240sx and put in an rb25, everything runs good execpt for this wierd issue. sometimes when im driving around, it could be hot engine or cold, my wideband will report full lean, and i will lose all engine power, it feels like i hit my fuel cutoff switch, but it will either bog and then start giving me power, or just keep stalling and i can usually give it more throttle and the engine will kick in again. if it occurs at idle, which is rare, it will just stall without hesitation. i have no clue what could be causing this ive tried looking at everything i can think of, it has a 2 year old walbro 255 so i dont think its fuel pump failure, i got rid of my fuel cutoff switch incase it was a loose wire, check fpr, cleaned maf, timings correct, new plugs, coilpacks are good resistance and no cracks, no boost/vacuum leaks, i dont know what else i can look at. im running stock injectors, stock ecu, stock turbo, sidemount intake plenum, walbro 255, running at 10psi, fmic. pretty much stock setup

[TheyKilledKenny]

MAF may need to be replaced or resoldered.

[RB20_240SX]

thank you the problem ended up being the maf wires in the housing were cracking off