More ?'s - Page 3

***907DAVE*** · #21 Tue, March 16th, 2010, 11:55 PM

I softened the GDU3 MFD in the low ranges, smoothed the rest of the map up a bit, and I still experience a pretty hash jerk when I let off the throttle and the R's are up around 2k and the TC is locked. Fheww......

I tried softening up the MFD map even more and I started to experience a dead pedal, which is not much fun to drive with.

I know I am missing something here.

***907DAVE*** · #22 Wed, March 17th, 2010, 01:10 AM

Oooppss.......I think I have it figured out now.

***cleatus12r*** · #23 Wed, March 17th, 2010, 01:40 AM

It always helps to help yourself.

That way you know what to do next time you have the issue.

[Yoda]Learn from within, you must. [/Yoda]

***907DAVE*** · #24 Wed, March 17th, 2010, 02:24 AM

Well I was feeling really great about my truck tonight, I got alot of my issues solved. So I decided to try a previous race tune ...............and I thought I heard a ping on one of the programs. Not being sure what the noise was I dug around to make sure there was not anything loose inside the cab.........bingo, found a chew can rolling around in my door pocket.

So I proceeded to try the next program on the list and I heard it again, but this time a bit louder and a little more frequent......and that program had even less timing..........uhh ohh.

Cab is getting completely cleaned out tomorrow and I will try it again.

***cleatus12r*** · #25 Wed, March 17th, 2010, 12:03 PM

Good luck, Dave!

***907DAVE*** · #26 Sat, September 18th, 2010, 04:14 PM

Okay.......few more questions.......lol.

Any idea what the purpose of the Fuel Density Multiplier is?

Which function controls the "high idle" speed and temperature?

I have played with the High Cam Idle adder and it seems just to be an adder to the base idle. The Cold Idle control appears to be what I am looking for, but the RPM values seem way off.

***cleatus12r*** · #27 Sat, September 18th, 2010, 11:03 PM

The cold idle control and the cold idle multiplier are the ones you want. The Hi-cam will actually increase the RPM at all times. Yes, the values for the idle speed are way off, and that is a function of the definition file itself. Bill has fixed the definition (or figured out what he needs to do to change it) but hasn't had the time to get it updated.

If I'm not mistaken, you can start with small values (divide the desired RPM increase by 4) and you should be close to what you want. Bill actually set up one of the definitions to display the actual RPM you want the engine to run at after a specific time.

I used that function on my PMT1 files (originally-purchased definition) with no issues before, but I was using the emulator at the time to get the RPM right where I wanted it.

***907DAVE*** · #28 Mon, September 20th, 2010, 06:35 AM

Quote:

Originally Posted by cleatus12r

The cold idle control and the cold idle multiplier are the ones you want.

It appears the values for the multiplier are in seconds, could this be the amount of time it takes to pick up the high idle?

Bill actually set up one of the definitions to display the actual RPM you want the engine to run at after a specific time.

That might be pretty handy.

I used that function on my PMT1 files (originally-purchased definition) with no issues before, but I was using the emulator at the time to get the RPM right where I wanted it.

I have played with it a bit using the emulator (which BTW has not left the PCM in a few months), and the changes seemed to take a very long time to respond. I need to play with it a bit more when temps drop a few more degrees to see what its going to do.