DME Update for the BMW E46 330 ZHP

[Sockethead]

LOL......Ya, but it sure sounded cool. Especially with no air cleaner. :-)

HAHA! yea, it did!

[danewilson77]

got ya... so I'm thinking that maybe it is the transistion of the DISA valve opening.... There has to be a disturbance in air flow as the valve opens up

For us "older" guys.. I'm thinking of the old Rochester Quadrajet carbs with tiny primary butterflys and huge secondary butterflys... there was a huge lag when the secondaries opened up.... we nicknamed them the "quadrabog"

OK. Makes sense. Tell me how a dealer update, removes the dip (caused by DISA), Batman.

[Katu]

I have to admit I have never noticed the 4k power dip under WOT for 1st 2nd or 3rd gear.

My '04 just hit 70,000 miles but when looking at records from the PO I noticed:

"DISA Valve Flap Broken, replaced DISA Valve" at 43,000 miles.

Did the new DISA valve maybe buy me some time? I have no idea what DME version I am running and I don't think I can check without the proper scan tool right?

Thanks guys!

[Smolck]

I can guarantee your dyno readings will show it. But do you actually feel it in real life driving?


You can see my RWHP figures climb and there's just a tiny burp at 3500. The graph blocks the torque which spikes at about 245ft-lbs but starts a dive to 20ft-lbs less which is only an 10% drop for a split second so in real time driving on my car I don't feel anything. It's weird how torque falls as RPMs rise but I guess torque is best felt at the low end where it's important since torque is how hard you can twist. Horsepower rises as RPM's rise which is good in the high end since HP means how fast your can twist.

Dang, that is one massive dip. Also, this post proves that revving to 6800rpm isn't helping you much, short of staying in power band on gear change.

[Sockethead]

Dang, that is one massive dip. Also, this post proves that revving to 6800rpm isn't helping you much, short of staying in power band on gear change.

yea ultimately, you want your shift to the next gear to land right at peak torque

[Katu]

I have to admit I have never noticed the 4k power dip under WOT for 1st 2nd or 3rd gear.

My '04 just hit 70,000 miles but when looking at records from the PO I noticed:

"DISA Valve Flap Broken, replaced DISA Valve" at 43,000 miles.

Did the new DISA valve maybe buy me some time? I have no idea what DME version I am running and I don't think I can check without the proper scan tool right?

Thanks guys!

Bump! It looks like I do need the right equipment to check the dme version, any input on the lack of a dip?

[danewilson77]

Bumping this so I need not have to find it again. I have JC's phone number. Will be calling him today regarding.

1. Any insight into 4,000 rpm dip > DISA, Programming etc?
2. How do I specifically get my DME updated, as I do not have default DME settings saved on my Shark? He installed Shark and latest BMW update.
3. If JC installed latest BMW update, why do I still have "Dip" while others getting update, claim to have "no dip" anymore?

These are the questions I have for him. If there are any others...please post here and I will try to get them answered....

I will also offer to him.....to just answer the questions here "in thread" at his convenience, if he desires.


User guide added for future use.

http://www.bimmerzone.com/images/inject4.pdf

DW

[echo46]

Thanks

[danewilson77]

Bump....yeah....JC isn't really getting back to me. Sure he gets bugged all of the time. Called and left message on 2/6/12.

[Sockethead]

Bump....yeah....JC isn't really getting back to me. Sure he gets bugged all of the time. Called and left message on 2/6/12.

Well hopefully he will at some pont.... we're all very interested in his answers...