Rb25det Cold start sputter

[Pommeyyy]

Hey guys, having a problem on my 97 s2 r33, when starting the car cold it will start up fine but cannot be driven for 3 - 5 minutes as when the throttle is pushed the engine sputters badly, can anyone help or had similar issues?

So far I have -

Cleaned the AAC valve

Cleaned the AFM

Cleaned the throttle body

Checked for vaccumm leaks

Tried adjusting the idle screw

Current engine mods on the car

Haltech platinum ecu

750cc injectors

Walboro 250

Top feed rail

Gt3076r

Spitfire coilpacks

Z33 AFM

Any help massively appreciated as it's slowly getting more and more annoying

[dyl33]

Did it start doing it out of the blue? Has it ever been better with the haltech ecu? If no, Could be the tune, cold start needs adjusting.

 

[Sklyn]

Theres also a cold start valve similar to aac. Give it a clean too

[breaker1845]

See these threads all the time. Most are usually tune related.  But more information is needed to work your problem out.

How long has it been happening? Have you done anything recently that has triggered it idle shit?

Edited January 3, 2017 by breaker1845

[Pommeyyy]

Bought the car around 2 months ago and it started fine but idle was high so I cleaned the afm, throttle body and idle valve etc and the idle was better but then I think the cold start problems were amplified, could the car have been tuned whilst the afm and stuff were dirty thus causing it to run differently now?

[niZmO_Man]

Yep.