240sx rb25det swap

[schweizie]

i recently bought a 240sx with a rb25det 

its stock  with a garret turbo 

my problem with it now is when i rev and drive it, the engine lags to go past 3k rpm . the boost controller(hks timer turbo) is has no screen on. my gauge on the says er5. 

the fuel rato is between 39 psi and 41psi

 

what can i do to order to resolved this issue. 

 

 

 

 

[Duncan]

do you know what computer it is using (standard maybe)?

what happens past 3k, does it stutter/pop (missfire) and not rev higher?

[schweizie]

standard  and its stuttering 

 

[Murray_Calavera]

What coil packs are you using?

[Dose Pipe Sutututu]

run gate pressure, see if that goes away?

if so, time for a Haltech R5, Samsonas, PRP catalogue dis dat, dry sump.