paulrgarrido

hi im new here

im from dominican republic and i reacently swap my silvia S15 with a RB25det engine i went all the way with the greddy style intake plenum and the Q45 big 90mm throttle body... the problem im having its when i go full throttle on the accel ... the car have a hugee cut its almost like it turns off and if you realese the gas pedal and punch it slightly again it run again and keeps doing it and doing it (but only when i go on full on the gas pedal)

im probably thinking that the problem comes from the MAFF that im using the stock RB25 MAFF

anywayss please help me with this

bkt808

list your full setup. stock turbo, ecu? how much psi boost? what rpms does it happen at?

paulrgarrido

my setup: greddy style intake manifold
q45throttle body
5psi boost
stock enginee

paulrgarrido

oem ECU
OEM MASS

the cut happens when i push the gas pedal to the full throttle

bkt808

im thinking you got a boost leak(s) or a spark/coilpack issue.
check your spark plug gap
what RPM does this happen at? when does it cut out?

paulrgarrido

i solved the problem..... i changed the mass from OEM to the z32 MASS and then change the stock tps plug for the Z32 tps plug.... and noww the car its running wilddddddd.. looking forward to getting the car to the dyno and boost that bitch up and set the fuel psi to the right air fuel ratio .... ill keep you posted on the progress