out_of_order

so after i installed the turbo and started my car, the car idles at 500rpm-ish.. after i rev it up a BIT the idle would drop to 200rpm and dthen slowly goes back to 500rpm..

presicion sc61
FMU-vortec
walbro 255 fuel pump

have the STOCK injectors in right now(got others but waiting for tuning)
sparkplug not gapped yet(shouldnt be it)
turbo return-line is kind of pinched(dont think that'd be the problem)

and i dont trust driving to the shop,because id reallie hate for my car to break down during this kinda weather.


feel free to help,and if you got the time...then flame on!!!

THANKS!