HELP HELP HELP 25DET Cutting

[NZSLIDER]

Hey people i have a r32 with a series 1 rb25det in it from a r33 gts25t, has the usal mods ar60 turbo, tuned length manifold ,40mm tial wategate, greaddy plenum , FMIC, tial q blow off valve, r34 GTT injectors n pump , sard pressure reg, gizzmo IBC,n a few more bits n bobs its doing a few things

Runs sweet untill under quater tank of gas then starts surging? also like its got a mind of its own will come on boost n haul some days , but other days will come on boost (12psi) for so long then cut n loose all power the sometimes stall wen i come to a stop ? does not do this if i bring revs down to under 1000 rpm then put clutch in tho

i have changed my coil packs n plugs (gapped to .8) n insulated my coils still does the same ,am running a series 2 pink sticker MAF at the moment but have ordered a z32 MAF so will see the change wen install that i am also running a factory ECU

any help would be considered thanks heaps

[godzilla_753]

this could be multiple things. Id start with doing a boost leak test. hows the idle? Also could be fuel related..if youve got a clogged fuel filter this could cause some of these issues.

did you check for spark on all six cylinders when you insulated them? Make sure they are all good.

Also dont change the AFM to the Z32, you will need a tune or SAFC or something, you cant just install it straight away

start with these things bud, good luck

[mixeds14]

Seems like ur maf its on its way out.. get one from ur local pick n pull junkyard out of a 96+ maxima(same part number n also pink label). See if that fixes it. It be the cheapest bet on the maf..