Piggyback VVT and ms3?

[1999 540i]

hello everybody, new guy with some questions.

I have a 1999 bmw 540i supercharged, currently untuned using fuel management unit.

My idea is to leave factory ecu in control of VVT and the drive by wire, does ms3 learn what the vvt system is doing? and adjust itself?

What about knock sensors is there a need or an input to ms3?

Am I missing something that's been covered before?

Thanks,

[Matt Cramer]

MS3 is able to run the VVT on its own. The VVT code can watch the stock VVT as well, but the only thing it adjusts based on VVT position is injector timing.

The MS3Pro line has built in knock sensor input; it's an add on option on the V3.0 and V3.57.

[Tjabo]

Matt, is there any reason for this guy to leave the DME in control of the throttle by wire, or should MS3 be able to handle that at this point? It's a question we've been pondering for the M62b44TU guys on the bimmerforums. My car is an older throttle by cable M62, so I can't really be a guinea pig for this.

[1999 540i]

MS3 is able to run the VVT on its own. The VVT code can watch the stock VVT as well, but the only thing it adjusts based on VVT position is injector timing.

The MS3Pro line has built in knock sensor input; it's an add on option on the V3.0 and V3.57.

Thanks

[1999 540i]

Matt, is there any reason for this guy to leave the DME in control of the throttle by wire, or should MS3 be able to handle that at this point? It's a question we've been pondering for the M62b44TU guys on the bimmerforums. My car is an older throttle by cable M62, so I can't really be a guinea pig for this.

It's all this guys fault!

[Tjabo]

I'm super excited that you've decided to give MS3 a try!!

It's too bad that we have all of these different setups for our M62s within just a few years, but I think as soon as we get a few things ironed out as far as the following items, we'll be able to share a lot of the rest of our setup info among ourselves to the benefit of the community:

1) Crank and Cam sensors (mine are VR for the crank, and Hall for the lone cam sensor)

2) VANOS for the M62b44TU engines (should be pretty easy I hope)

3) Throttle by wire for the M62b44TU engines (I know absolutely nothing about it...)

[Paul_VR6]

3) there is no native dbw support but I have been using the Ozmo controller with some success on dbw vws

[Tjabo]

3) there is no native dbw support but I have been using the Ozmo controller with some success on dbw vws

Thanks Paul!

I'm really dumb about DBW (obviously), and I remember from years ago when I was MS3-ing that James and Ken were adamantly opposed to including DBW supporting code. Maybe I got over-excited recently when I noticed there was DBW control included now in the code.

From your comments, and from taking another look in the "Help" pages for the DBW stuff, my take on the situation now is that the code in the MS3 basically just allows the MS3 to "talk to" the actual TBW controller, such as the Ozmo. Is that correct?

If so, then I guess for M62b44TU guys, the best solution is probably the one suggested here by 1999 540i, to continue to run the MS3 parallel to the DME. As long as the DME doesn't get unhappy with the situation and decide to not play nicely, that is..

does ms3 learn what the vvt system is doing? and adjust itself?

Regarding that piece, I think I would be correct in saying the answer is "No the MS3 does not learn what the VANOS system is doing, you need to configure it to function the way you want it to." But there again, I haven't done VANOS control from the MS3 YET. I'm planning to get my next MS3+MS3X setup built in time to run it on my E36 this spring.

1999 540i, if you haven't downloaded it yet, this is the manual you want for helping you understand the configuring of the MS3. VVT settings are on pages 210-215:

http://www.msextra.com/doc/pdf/Megasqui ... ce-1.5.pdf

[Paul_VR6]

There is some dbw support for a can based controller, but no hardware to go with it. The Ozmo controller is fully standalone, and will just feed ms the tps signal. Another option is the gm tac module but I am not sure how it plays with the bmw parts. I have used them to retrofit other cars but with a gm pedal and tb.

Vvt should t be bad just follow the docs