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      02-18-2020, 02:16 PM   #146
Bmwusabmw
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Drives: Bmw M5
Join Date: Jan 2020
Location: NJ

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Isnt there a TSB on this I know I had found one before where is cold start RPM is too high the car shuts off, or when placed in gear. Needs a software update. - I cant seem to find it now.

Quote:
Originally Posted by JBA87 View Post
So...

I was able to capture on video my car automatically turning off on cold start ...

Watch "Untitled" on Vimeo:

Let me know if the above works

there is another forum post about these cars experiencing this weird issue on start up and possibly relating it to a bad fuel pump .. I'm wondering if I may have a similar issue and if it is the source of my low timing and slower than average times (across the board)

In any event, I flashed back to stock and put Jb4 to map 0.. here is a quarter mile run for reference (with the drivers window fully down because I couldn't see without my glasses.) it wasn't a great run but comparatively to DME you can get a sense of the difference (not much)

This run (stock 93 octane)
Drivers window completely down

DA1285

0-60 3.43 seconds (this still makes me cry.. but it was a very bad launch admittedly)

1/4 mile 11.27 @ 125.05 .. 1.82 60 ft (horrible 60ft probably due to bad 0-60)

60-130 8.88 seconds (car felt very slow at high speed but this could have been due to the window being down and getting some drag)

Again stock car seems quite slow

I'm hoping it's an issue related to the fuel pump or something else that's causing those false starts.. that's the second one I've had .. in two days
Appreciate 0