I’m having some trouble getting to the bottom of an issue I have with an rb25 neo. It’s in a GU patrol. It idles fine, free revs fine but as soon as I put any load on it it goes for a few seconds then dies, coughs splutters etc. if I then put the clutch in, it takes a bit of time to recover. It’s pretty much undrivable. It did have the boost sensor hooked up wrong and the the afm has been replaced and now neither throw codes. Only codes at auto trans code, but it’s manual anyway. I assume just a auto ecu. Any ideas would be appreciated.