Stagea Rb25 In R33 Misfires, Chokes! Help Urgent!

[OoskylineoO]

Did a search about this but unfortunately havn't found a straight answer yet

Problem is, i just put a s1 stagea motor into my s2 r33 gts4, originally it was NA. I plugged a factory r33 s2 gtst ecu in (assuming s1 stagea rb25 and r33 s2 rb25 are the same) but it misfires and chokes badly after about 3000rpm when i put my foot down. I don't know if this is because of the differences in ecu if any? or if there is something wrong with the motor itself.

Question is am I going to have to find a s1 stagea ecu and wiring loom and replace the existing one?, are there any differences between the s1 stagea rb25 vs r33 s2 rb25? injectors maybe? :S i noticed the ecu plugs between the s1 stagea rb25s and s2 r33 rb25s are different. Are there such things as ecu r33 stagea adapters?

Im out of ideas.

Any help will be greatly appreciated thanks guys!

[-NismoR32-]

could be coilpacks, afm....??

[32TAXI]

Big conversion, missing anything?

Got boost? Boost sensor fitted? N/a or turbo loom? Plugs and coils? fuel pressure?

Any matching turbo R33 loom, assoc sensors and ecu should run it no problem.

Fit a series 2 R33 turbo loom, all sensors and coil packs which matches your ECU.