That was a know issue a couple of versions back....

That was supposedly corrected way back around software version 1.07

The problems were interment and were not localized to specific batch runz of ULT's

 

in a thread a while back when i asked for help with the check light and emu,

well my serial number is 887x
i am running 2.13 firmware..


from memory, it was just one single setting that was wrong , leading the car to stall

now tuned and making 15rwkw more than stock at 9000rpm
10rwkw gain throughout the rev range.
absolutely no gain in power from leaning out the a/f from 10.9-> 13
all the power was made in adding ignition timing

no wonder vafc's are next to useless

 

NGK Laser Iridium #5068 (heat range 8), gapped to .035". Wow these are great plugs.

 

I has fixed my problem.

 

mine is acting up too after my update, disconnecting it will fix it?
I've had the misfires codes for all four cylinders

 

I had to revert back to 2.12 to get it to work properly again.

 

was it fixed by disconnecting it for a while or did you do something else?

 

something else. I changed my spark plugs.also, my immobilizer light was going haywire, but it seemed to have fixed both problems.

was running the NGK 7173, now running the NGK6097.

 

Hi guys how have you come on with this?

I have the EMU and am having misfire problems too, my S is N/A tuned but im running fw2.13.

THe misfire only happens when i switch the car off wait and on again after a minute or two a CEL comes on misfire random and differing cyclinders.

I did have crap plugs when running 2.12 but i thought it was just the plugs so we just upgraded to 2.13.

Suggestions?

Thanks

 

I fisrt experienced this after upgrading to V2.13. After going back to 2.12 the problem went away for a while and then came back.

I had my injectors cleaned/serviced which did not fix the problem. I finally went with larger injectors and the random misfire only happened once right after topping off the fuel. Down to 3/4 tank and it has not happened again.

I suspect coil packs may be weak or my fuel pump is struggling and I am getting an occasional pending DTC for secondary air (possible leak somewhere).

In my troubleshooting I could not get the problem to occur unless I was well into boost (went back to NA to test the problem with and without the eManage in the loop).