Extract timing map from 2000 MM ECM?

Reply Subscribe

Thread Tools

Search this Thread

#11

10-22-2018, 12:56 AM

Road Warrior

Thread Starter

Join Date: Nov 2005

Location: Mountain View, California

Posts: 1,481

Likes: 98

Received 81 Likes on 71 Posts

I found it odd that the table lacks data for throttle positions less than 2.4*. It was also odd to be that WOT seems to be handled as a discreet table.

Reply Like

#12

10-22-2018, 09:10 PM

Steve Cole

HD EFI Guru

Join Date: Jan 2008

Posts: 3,875

Likes: 2

Received 3,452 Likes on 1,589 Posts

2.4 degrees rotation is where most of the modified engines are getting close to at idle. Remember that if you have 0 degrees rotation, the engine will not run as the throttle blades would be completely closed off. MM does not use a IAC bypass port to adjust idle like a Delphi system does. The MM is like a carb in that it pushes the throttle open like a choke on a carb. would, thus changing the degrees of rotation of the throttle.

Reply Like

#13

11-02-2018, 08:52 AM

Ed Ramberger

Stellar HDF Member

Join Date: May 2015

Location: Then Wisconsin, now North Carolina

Posts: 3,175

Likes: 146

Received 888 Likes on 622 Posts

Quote:

Originally Posted by Steve Cole

Damn Ed, didn't know anyone else still had those. Seems like for ever ago we did those.

Steve - I still have some "golden keys" remember those? lol

Reply Like

#14

11-03-2018, 09:52 PM

Steve Cole

HD EFI Guru

Join Date: Jan 2008

Posts: 3,875

Likes: 2

Received 3,452 Likes on 1,589 Posts

Yep. Still have a few myself, along with a couple brand new in sealed bag '97 up ECU's. Put them aside for a raining day. The funny thing is that I have the realtime tuning software for them still, but I'm not so sure I remember how to do it all anymore. I think the last time I tuned a MM was back in 2004!

Reply Like

#15

11-04-2018, 07:58 AM

Ed Ramberger

Stellar HDF Member

Join Date: May 2015

Location: Then Wisconsin, now North Carolina

Posts: 3,175

Likes: 146

Received 888 Likes on 622 Posts

Quote:

Originally Posted by Steve Cole

I have several MM ecms. Sold one last year to a guy who was stranded at a rally. It got wet inside from a poor PC install - misplaced boot. Funny story. He drove about 4 hours to pick it up from me. The Service manager told him he got ripped off because no good ones were left. He ignored the SM. They plugged it in, it sounded like a shotgun when it lit off and all the fuel in the exhaust lit, then ran like a champ. He said the SM jumped down behind his desk when it made the noise.

Last edited by Ed Ramberger; 11-04-2018 at 09:33 AM.

Reply Like