Sr20 problem please help

[Illestdrift]

I recently swapped in a blacktop sr from my friends car and it's having idling. It'd idle at above 1500rpms and after i'd drive it for awhile, the idle would pulsate from 1500 to 2000 frequently and sometimes it'll stay steady at 1700. i have
blacktop sr
greddy fmic
turbo xs bov
walbro fuel pump
test pipe
downpipe

i checked all of my vacuums and they're all on right and intercoolers couplers are on tight, the bov isn't welded but it's connected by a hose into the hot pipe, i ran my ecu code and received a 55. i left my car on while its idling like it usually does (high) and i took off my maf and it still does the same idle. any help will be greatly appreciated

[Illestdrift]

it runs strong, i was at a drift event and it pulled strong in all gears. still idles high though

[garagelu]

try adjusting the screw on your iacv.

[Illestdrift]

i adjusted my iacv screw and cleaned my iacv with throttle body cleaner, still idling bad and my boost is set at 3 psi... i checked all of my vacuum lines and it seems to be fine... any more ideas?

[rps13drift]

perhaps its a bad intake manifold/throttle body/iacv gasket? I personaly had a bad leak on my iacv gasket. Spray a little carb cleaner around your gaskets and see if your motor revs up! If it does than that your problem

[fliprayzin240sx]

BAD IACV? Thats the only thing I can think of. ALso, how long has your setup been running? Nissan ECUs have a tendency to learn the car after a couple of weeks. Ive had cars that runs like shiet even after checking everything to suddenly just fix itself. Also double check your timing for shiets and giggles.