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Haven't posted here in awhile. My friend got a RB25 NEO engine in his C33 and he has constant troubles with the wiring and CAS. Wiring is so hacked up, so its easier just to replace it with another one. He got a Haltech r32 plugin from his old car. And I was thinking that we can switch to R33 loom and sensors and use haltech on his engine.

The only problem I see is CAS. Since the its NEO and intake cam is a tad different. The way it connects to CAS is different to R33 RB25.

I was thinking of several options:

1) Try to repair the NEO loom and wire a R33 ECU socket so Haltech could be connected. Another thing, would it be able to read ignition from NEO CAS ?

2) Replace whole engine loom with R33 one and use NEO CAS. Same as above, will Haltech recognize it ?

3) Replace whole engine loom with R33 one and use R33 CAS. Try to modify it to be used on NEO intake cam. Maybe the inside of the CAS, that connects to the cam can be swapped ?

Anyone had done similar swaps ? Or has some kind of advice for me ?

Thanks!

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