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Rb25Det Neo Into R32 Gtst Problem?

Ryan!

By Ryan!,
in Engines & Forced Induction

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Ryan! Rookie

Ryan!

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Hey Everyone

I have just put a standard RB25DET NEO into a R32 Gtst.

Engine was out of an Auto r34 GTT rb25det neo)

Ecu and loom is from a manual Stagea (rb25det neo)


It ran perfect after i connected everything, took it for a spin and went great through all of the gears ! running 10psi

now on my way back from testing i went to give it to it a bit and all it did was bog/misfire under load, so i thought maybe coilpacks/ spark plugs/ afm etc,

Okay so i changed all that, bought new platinum spark plugs new conditioned afm, and another set of coilpacks, went for another drive, and again went good, THEN on the way back same thing its like as if the ecu reads something wrong and it goes into limp/safety mode??? also like to mention runs really rich too.

OKAY now i have worked out when i disconnect the afm and put it back in its like as if it resets everything and when i go for a drive i get about 10 seconds of running good then it goes back to bogging/ misfiring under load.

Is there something im missing that needs to be connected to the ecu ?

what is causing this to happen?

Also I dont have a diagnosis plug haha

and wanted to also ask if i buy a power FC with hand held and connect that to a computer will that tell me what is wrong, and a friend of mine told me a power fc ecu does not have limp/safety mode so will run normal with one, is this true?

Thanks kindly !!

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https://www.sau.com.au/forums/topic/451452-rb25det-neo-into-r32-gtst-problem/
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