Help with EMU on 2JZ

[PSI-Motor]

Hi Josh

Could you send me the whole map?

Info@psimotor.se

[Josh42]

Hi Josh

Could you send me the whole map?

Info@psimotor.se

Hi mate, file sent

[PSI-Motor]

Thnx. Looking at it right now.

Can you explain the missfires? Also if you checked so that the trigger polarity is correct both on cam and main trigger?
First time i did a 2jz with 12+1 trigger with EMU i missread the pinout and got th camshaft sensor wired in wrong and that lead to wrong configuration in the software, that was giving me all sorts of problems with missfires om higher rpm:s.

[Josh42]

if I was to say that usually you could drive through a misfire, this one you couldn't. it was like the whole engine cutting.

the miss began only when coming onto boost, but then starting to masquerade itself at even low RPM at any kind of load. it was the most violent misfire I have ever heard and plenty of people who heard it concurred.

[PSI-Motor]

if I was to say that usually you could drive through a misfire, this one you couldn't. it was like the whole engine cutting.

the miss began only when coming onto boost, but then starting to masquerade itself at even low RPM at any kind of load. it was the most violent misfire I have ever heard and plenty of people who heard it concurred.

And the car has been running fine before this?

[Josh42]

no, as soon as it was started it was running on the EMU and the issue was present.

I completed 500miles during mapping and running in with the misfire present before it began to show itself at even low rpm.

as said though, one of the other supra's had ran for 5000miles on an emanage ultimate prior to the EMU being installed and it suffering bottom end failure.

[PSI-Motor]

The missfires killed your engine. I think you have trigger or wiring issues combined with wrong rising and falling settings. The other guy probably have the same problems.

[Josh42]

The missfires killed your engine. I think you have trigger or wiring issues combined with wrong rising and falling settings. The other guy probably have the same problems.

I completely agree mate. thank you.

Have you spotted anything within the map out of the ordinary?

[PSI-Motor]

Cranking threshold is 100rpm move it upp to 300rpm.
VE looks a bit "square" and sharp
AFR table 1 is a bit strange
Your ego correction is turned of
Injector trim is active on 3 cylinders

Rising edge on camshaft is the question. Best thing is to check the edge on the triggers with an oscilloscope.

[Kisielisodd]

Project map from 2jz-ge

I have checked map, if You tested ignition timing with the strobe lamp and trigger tooth and trigger angle are set properly, ignition map is not a problem.
As i see, you are using stock distributor, (ignition output only one). Distributor should prevent wrong cylinder ignition that can occur when engine misfire to stall.

All engines that suffer bottom end failure, are 2jzge with distributor ?
Did You use stock wiring harness or You made custom one.

Other thing who drives car with such a huge misfires it is asking for a trouble.

[Josh42]

I didn't come on here to be told in an idiot for driving the car with a miss. I merely followed the advice of the mapper and we were driving it to try and isolate the misfire. How else can you identify a misfire that only occurs under load without driving it?!

You are correct, all the engines were running the stock distributor.

[Jadzwin]

Do you have any log file from drive ???
I think we can find there the reason of missfires.

[Josh42]

Could you guide me on how to pull the logs please?

[Josh42]

Bump, anyone?

[Jadzwin]

Hi!

You need to connect to EMU, make some drive with the software client and the press the Disc icon on log window toolbar.
All channels will be saved to log.

[gregpe]

Hi
I believe that is a car when Lyndon has been involved..
I've heard that car is missfiring on high load personally i can't imagine that is a problem wit ecu and to get missfire engine calibration wopuld be terribly wrong what i would suggest check coils power supply i had recently two cases that was single small wire to supply all coils and they just didn't have enough energy to spark on high load-boost . both of the sorted by adding additional 16AWG wire to coils power supply . if you have any question feel feer to email me info(at)ecumaster.co.uk or visit my place in Kimbolton will have a look..