Ya-Hoo!

[907DAVE]

I was planning on changing the ICP map resolution to get a little more fine control on the lower end of the map to try and cure this. Not sure if it will change anything....but worth a shot.

I will have to get the "two separate projects" rockin but I think it should be pretty strait forward.

[F-127]

Update time! (thanks for the pointer Cody)

Finally had some down time to do some more trials. Set the ICP desired down some in the lower MFD&RPM area. Then I looked at the ICP map for 65hp tune for OBS 7.3s. Had that map and a few of my variations on the chip for a trial. ICP map from the 65 hp tune seemed the best. There was only 2 quick romps before getting back to normal, unlike before where is was nearly constant until I quit coasting.

Looked at the Super Duty performance tunes for ICP desired after I finished a few trials today. That looks to be like even more in the direction I was headed. I may try that map once with a few in-between versions to see if I can get it all smoothed out. That will require some "grafting" with both the resolution and normalizers different.

[Pocket]

Keep us updated. I'm interested to hear the results.

I've got dual HPOP's on my truck, and I get an RPM drop when I come to a stop. It's worse on a stock tune or lower HP tune than it is on a racing or performance tune. I've done some tweaking and got it so that it doesn't happen often, but every now and again I can watch those RPM's dip for a split second when I come to a light or stop sign. Still trying to figure out how to completely get rid of it.

[F-127]

I always get excited when there is something to read in this section of the PHP forum, so I figured its my turn again. I finally got the courage a few weeks back to take out the chip that came with the truck and run with my own. They were good tunes, but I was just driving "dead to the world" in terms of paying attention to what was going on with the old chip. I tried to note things that I liked and disliked, but it was hard knowing that I couldn't do a dern thing about it. So, I busted out that last blank chip (reorder may be coming soon lol) and slapped it in. Engine side of things is about 95% ironed out. I only seem to have a defueling issue at higher boost pressures with no 'boost fooler' in the MAP line and also because I left the 'adder to pulsewidth multiplier' map alone.

Now, onto the transmission side. I'll likely be going back to re-read about every thread in this section dealing with shifting. I always tried to follow along but found it hard to do with no auto trans of my own to tune for. Here's an FYI that there might be future questions from me for shifting questions!

[cleatus12r]

Just keep in mind that the OBS transmission functions are infinitely better than the SD trucks because they are so simple.

The SD PCMs are complicated enough that there are TONS of things that affect when/how the transmission shifts. The OBS computers have a tendency to do what you want them to do.....consistently.

[F-127]

Well after making my first street race tune and failing somewhat miserably by making very crude estimates on shifts (shift points were a wittle higher than I wanted), I decided I would come up with a handy spreadsheet so I could nail my shift points down more precisely, making a fine art of shifting (hopefully someday lol). So, I'm going to attach the file. Haven't got the fancy or pretty extras, but it takes care of business. Version 2 of the street race tune is soon to be completed, gonna be fun. Taking care of a number of issues, one being that "double bumping early locking garbage" as it has been put before.

[cleatus12r]

Now THAT is cool.

I wish I had some Excel skills. "You know, like numchuck skills, bow hunting skills, computer hacking skills... Girls only want boyfriends who have great skills."