crazyd wrote:
My BLMs are currently at 110, and until I see that come a lot closer to 128, it would be counterproductive to do a dyno run. But I'll tell you what. If someone with MAP tuning knowledge on a 730/262 or similar ECM would like to review my current BIN and help me get to that point, ensuring my AFR is dead on for max power at WOT, and we take up a collection for the dyno run, I'll do it.
VEMaster + TTS Datamaster = Your best tuning friend for these computers. Should take care of your fuel tables at idle and part throttle (non-PE mode) and all that will be left is tuning spark and WOT fuel.
What you will need:
-VEMaster 2.0 or 2.1 for "8D" code mask
-TTS Datamaster 8D
-Laptop PC
-Laptop to ALDL interface
Datamaster is a very nice scan tool program that can save/store a very detailed log of all the scan data gathered during a data collection cycle to your laptop pc's HDD. VEMaster uses the learned/stored fuel trims (BLM's) in the log to compute what changes need to be made to the VE tables (fuel delivery) and automatically makes those changes to the .bin file. This will only work when Block Learn is enabled; thus it will only work when the system is in Closed Loop and not in PE (power enrich, WOT) or Decel Fuel Cutoff modes. For WOT fuel tuning, I suggest obtaining a WideBand O2 sensor and using that for the best results.
A note about getting DM logs for use with VEMaster tuning: You want to hit as many cells as you can during the drive in which you are logging data. These "Cells" are known as the stored fuel trim values (BLM cells). There are typically 16 cells used in normal driving in these computers and they are divided up by engine load and rpm. It also takes time for the BLM to learn a given value, so make sure you drive the car a while without resetting the computer before you take a log for use with VEMaster. You may also need to adjust the blm cell boundries in the .bin file to make them work better for this purpose. Most stock $8D code masks have a very narrow boundry for the BLM cells pertaining to the RPM side of the equation, and you will definately want to address that in the chip programming before getting these logs.
TTS Datamaster $8D is available for download on the internet and I believe the newest version still has the free 20-log trial before the software becomes locked and you have to purchase it. VEMaster is available for download for free on the internet in various places. There are two versions I am familar with: $8D 2.0 which only does the $8D code mask and 2.1 which can do $8D, $DA2 LT1, and $DA3 LT1 masks all in the same program.
-ryan