10 Day Build! E21 S54 - Bertha

[Garageaholic]

Got it to fire, but wouldn't hold an idle. I still need to modify the intake manifold, but based on what you see in the video could the fact that I don't have any vacuum prevent this from fully starting?
This is a stock tune, not ALPHAN. So I presume that until I get the intake manifold and obtain vacuum that I need this thing will continue to behave this way.

https://youtu.be/ErjRgz0t0Fc

Sent from my iPhone using Tapatalk

[R3Z3N]

When I pulled my S54, it ran w/O intake manifold. EWS flashed out?

[Garageaholic]

When I pulled my S54, it ran w/O intake manifold. EWS flashed out?

Yes I flashed EWS out, or it would never have #1 turned over and #2 gotten spark. This guy had the same exact symptoms and it turned it it to be a huge vacuum leak from a forgotten disconnected ICV lower hose.

I think I'm going to experimental ALphaN flash it to see if it will start without the MAF.
I simply can't fit the intake on, which is why I'm having the issue.

http://www.m3forum.net/m3forum/showthread.php?t=458745&page=2

Sent from my iPhone using Tapatalk

[e30polak]

Car should still run (not great) without intake on a stock tune if all check sums were cleared properly along with EWS. Alpha-N will help, but if any check sum errors are present, you will still have trouble.

[Garageaholic]

Yes I got it to run, but not idle well because of the lack of vacuum in the input of the ICV. Other than that, still working out minor bugs


Sent from my iPhone using Tapatalk

[jpod999]

11 days later and we want an update!

[Garageaholic]

On vacation but have some updates at the end of next week - correcting rode height and finally got it to idle !


Sent from my iPhone using Tapatalk

[itskingsteelo]

Dont know how i missed this thread but this was nuts ! Awesome work

[Garageaholic]

Thanks! Got it to idle - vacuum leak from the brake booster line actually.
Now tuning parking brakes because I have a clicking in the rear when driving.
And engine is starved for fuel under commanded power.


Sent from my iPhone using Tapatalk

[e30polak]

Update?

[jpod999]

According to IG the car runs and drives but needs some modifications in the name of drivability.

[BECKSTER]

Bump?

[Garageaholic]

Guys I created a new thread with updates because apparently the pictures got lost on this thread....


Sent from my iPhone using Tapatalk Pro