Hey now.

The purple arrow direction is achieved by commanding higher PW at lower injection pressure. It hasn't got a whole lot of anything to do with RPM (except if you're looking at the MFD......but even that can be high at a low RPM or low at a high RPM; it all depends on load).

More to come...WITH PICS!!

Here you go. Bonus points (gameroom cash) to the winner! Here's a hint: You will HAVE to look at two other maps to come to a conclusion. Oh, and this is at operating temp (no interference by the pulse width multiplier map). And since you can't get an exact number just from the maps, I'll take a certain range within a tenth.

http://i641.photobucket.com/albums/u...PWquestion.jpg

1.3 ms

Yep. Good thing I didn't tell you to show your work. It is somewhere between 1.2 and 1.3 ms.

I'll get Corey on the mission of giving you a few hundred dollars you can blow on blackjack. I know how you LOVE that game.

Just out of curiosity, was the question helpful?

Just for comparison, here's another tuning company's 100 HP tune. This is not meant to be a bash, but some food for thought.

With stock injectors I leave this map alone. Tuning for EOT makes a lot more sense to me instead of adding fuel this way:
http://i641.photobucket.com/albums/u...wquestion2.jpg

All the work I did was write three number on my tool box............. 27mg/st, 1800psi, 12.41mpa(had to convert it grr......).

But for giggles......

http://i619.photobucket.com/albums/t...dave9/0_13.jpg

Sorry, I am bored as hell today........waiting for a phone call.

I like a challenge, but that was not fair for everyone else.......Im OK with that though.....more $ for me.:hehe:

That PW map looks insane!

What is the point of having close to 8ms of PW?

Don't the stock injectors empty in around 4ms?

Doing the math on that map shows that the PCM-commanded injector pulse width exceeded the IDM's capability severely under high load/RPM situations. This thing would fart and pop terribly with any decent amount accelerator input at high RPM.

8 ms is very excessive, even with low injection pressures. However, unless something is wrong with the truck, you won't be at 100 MFD and 435 PSI of HPO. Interestingly, the IDM is capable of supplying up to 19.22 ms at 750 RPM. You certainly couldn't run that much and have a driveable truck though. Conversely, the IDM is capable of running only 3.7 ms at 3350 RPM without having issues. Another thing to keep in mind is that unless you have your MFD vs. Boost map allowing 100 anywhere, you really won't get 100 MFD commanded anyway and that last tune I showed you has 100 across the board.

Wow, I'm so lost as to what was being asked, and how Dave came to the answer... I thought I had a grasp on this stuff, but it seems I don't have a clue...

How did you guys begin to grasp all of this?

By constantly buggin Cody....:cheesy smile:

But seriously, once you get a little seat time it become a little more clear. I still do not have much of a grasp on things, lots to learn yet.