So i have been doing a build putting a rb25det from my written off r33gtst into my e36 BMW. It all starts and runs well apart from stalling when i give it a rev over 2000rpm. The motor is mostly stock. Aftermarket turbo, FFP and that is about it running stock ecu. The AAC has be cleaned idle set to 900rpm, im just abit lost on what would cause this to happen as there was no issues when it was in my 33, i hoped someone could give me some ideas to what could be causing this.
Thanks.