Smarty UDC Initial Impressions

[AH64ID]

Which would basically tell the ECM that its always a certain intake temperature all the time?

Not electrically savvy.

Correct.

Timing adjust is partially emissions based, and partially power/efficiency based.

Personally I'd like UDC to let us mess with the timing adjust tables based on intake temp.

 

[cj42]

John is there some formula that will show you the max duration you can have in one cell? So if I wanted to know at 87% load at 3200 Rpm my max duration should be... Probably a stupid question but I've done worse...

 

[JFettig]

don't forget that "rpm" in the duration map isn't "rpm".... see the timing calculator units.

 

[AH64ID]

John is there some formula that will show you the max duration you can have in one cell? So if I wanted to know at 87% load at 3200 Rpm my max duration should be... Probably a stupid question but I've done worse...

Not really. Depends on what you are trying to so. 3000-3100 is about the most you want. Depending on your rail pressure map you may have the same duration at 2000 as 3500 when it gets calculated out...

 

[cj42]

Yeah my Max power program maxes out in between those numbers but my splits will be below 50 on the last column. The program I'm tweaking now maxes out I think at 2854. That will give me 50/50 and 30 deg for maxx timing.

 

[dangerous06]

I finally got smoke down to a gray haze best I could do! Cruising down the Freeway I can see a little gray haze if I give it pedal it increases a bit hard pedal a lot but still gray not Black! I tried lowering the duration in the 1500 to 2000 rpm range at 12 to 37 load but all that did was make my mileage worse. I did the calc sheet to address any timing changes and did notice the timing dropped about 1 across the area affected so my 8 is now 7 in the cruise area. Should I bump it back up to 8 by changing the splits? What else can I do to clear smoke? Under hard acceleration I have a lot of dark to black smoke above 50 Load and 3000 rpm.