Hi Guys, Thank you all for your help: Ric, Burna, rider, Scooter, Dnk, mharvey and BigSupes.
Basically if i can get the funds together i know i need to update and replace the ECU and all its senders etc. meanwhile i have to fix the problem i have.
I imported my car from Cork in Ireland in 1996, just 1,000 KM on the clock, it is a 2JZ GE. NA.model. 5 speed manual. The car has never missed a beat and in 2015 i had a NAT conversion at Rocket Dog Racing, (Craig Attard), in Cardiff, this gave me 450 BHP and the performance was fantastic. He used the Emanage Blue piggy back in partnership with the OEM standard ECU. I did not know at the time that none of the Mappers in the UK would get involved now due to the Emanage, this has been a problem for me especially in 2021 when i had to fit a new cylinder head gasket and a different exhaust system, i could not get the MAP checked.
The over fueling problem which i now have, has been, and still is, a nightmare situation due to the problem being intermittent for several weeks, it was OK for a few days and then it would return, however in the past few days the problem returns now as soon as the engine gets up to temperature, from cold it starts perfectly and ticks over smoothly, then after 20 minutes it starts to reek of petrol, only running on three cylinders, black smoke, etc, bad over fueling.
Due to the problem being heat related then the ECU, which is in a cool area i have eliminated. My investigations now are the senders, the MAP sensor, the throttle plenum air temperature senders, the coolant temperature sender to the ECU, not the camshaft and crank senders, inside the distributer body, this is because Keron (Extreme Performance) told me he has never known these fail on a 2JZ GE engine. Keron is going to let me have the senders i now need. I badly need some sort of Star diagnostics kit to help locate where i need to start looking and changing parts. Can any of you tell me where i might get one? I don't like the paper clip way with the flashing light method.