Rb26dett Conversion Into A Gtst

[skidn32]

ive recently put an rb26dett into my gtst. converted to rwd running a s2 r33 box. i sent it in to 1 of out tuneing specialists. they wired the the hole set up so it worked. then i took it back there and had it run up on their dyno. they re chiped the factory rb26 ecu. since its been sitting 4 nearly a year as it is not road legal yet ive been geting it ready 4 cert. ive since driven it a few times. put new fuel in it. found that under boost it cuts out. so i tried a new igniter and loom. still farting around. so i got rid of the coils and put in a wasted spark set up thinking it was a doggy coil. its still no better. it wont boost higher than 0.5 bar then seams like fuel cut or boost cut. but that has all been removed when new chip was written. the timing is all correct and hav brought up the fault codes and everything it working fine. cleaned afm and they r mint.

if any 1 could maby point me in the right direction that would be great

[momentum_gtr]

sounds like a nice project.

Have you upgraded the fuel pump?

also try a set of afm,s that you know work.

just because there clean it will not always mean they will work correctly.

that would be a good place to start i think

[lead foot]

sounds like afm to me, try a set that you know work and then can rule in or out.