K so heres what happened:
- My friend shaun (2003 evo 8) came to my house to get the "stock tune" put back on his ecu. (because he hooked up and afc neo and it reset his fuel maps and he decided he didnt want it anymore)
So anyways we flash it back to stock and it starts up just fine. We go out driving heading to fedex and its running perfect. We get to our destination, turn the car off, and go inside. When we come back out about 15 minutes later the car won't hold a start. It starts and can rev to about 5k then dies. After trying several times, the best it will do now is keep trying to turn over, but it won't. We have tried unplugging the negative battery cable for almost an hour, checked fueses, spark plugs and connections. Any ideas?? Thanks in advance!!

 

check the fuel pump?

 

What are his mods?

 

No, but is it possible that the fuel pump just all of a sudden went out? it was running perfect, not a single sputter or anything

 

He has the same exact mods as me, except he has a stock fuel pump, and stock tune. (and a upgraded licp)

 

you might have to reflash the car with the correct immobilizer code

 

but right after the flash, it started and ran perect, until we shut it off again. . but we did use the stock tune from my evo.

 

wow, strange. I had a dodge ram that i was running a tune on. Took the tune off, it started up fine. Drove to the post office lol...and when I came out she would not turn over. I had to flood the engine to get it going. Turned out somehow a few plugs went bad right away...ironic i must say.

 

So you took your flash and flashed his? Im assuming you saved his flash wit his immobalizer code?

Flash back his old flash and then copy the stock maps.

 

No, I didn't because his map(well air and fuel maps) were deleted by the afc. But right after the tune it started and ran great

 

ttt for help

 

ttt

 

Did you transfer his immobilizer code or not?

If not thats what youll need to do. Not sure why it started and ran but if the car does not have the correct immobilizer code you need to have it in there

 

For now you can wrap your key in tinfoil and put it by the cylinder lock while his key is inside.. that'll get you moving again.

But as suggested, the immobilizer code sounds like the problem here. Supposedly sometimes you can get the car moving a few blocks before the code kills it.

 

how can I get his code back if I didnt save it?