If anyone has not been here, check out my recent SDS install here:
http://www.914world.com/bbs2/index.php?show...c=53733&hl=The combo of the SDS system and the WMS wideband is killer- the tuning is SO easy.
The car started after 4 cranks and settled into a 1000 rpm idle.
The first time I drove it, I kept one eye on the wideband display, one on the road.
After 2 stops to lean things out, the car is at around 11.5-12.0:1 AFR, still plenty rich, but not bad for 15min of work.
Next step: with the WMS wideband, the SDS controller will log AFR at each RPM programing point. So, how is this for easy: warm the car up, get into 3rd gear, get rolling at around 2k rpm on a long flat road, go to 75% throttle or so up to redline. Pull over, and scroll thru the RPM programing points. The display will show the RPM programming point, such as 2250, as well as the current fuel value, (any # from 1 to 256) and the AFR at that rpm point, such as 11:1. So lets say you want to be at 12.5:1 at that rpm point. Figure out the % difference from what you got, in this case, 11:1, and what you want, 12.5:1, and change the fuel value by that %, and you're done for that RPM point. Do that for each RPM point, and in 1 "pull" and maybe 5 min on the side of the road, you are done. One person can do it all.
Next step after this would be to load the car on a dyno, and use the knob to richen or lean the mixture out across all RPM points, and do back to back dyno pulls to see where your base line set up, and the +10% fuel set up made more TQ. In this example, we know the difference is 10% due to using the knob at a 10% setting, so adjust the fuel at that RPM point by 10%, save the new values, and try again to add or subtract 10% with the knob, make a run, make an adjustment, till you have maximised your TQ across the RPM range. For example, you may find that 12.5:1 is the right AFR at one RPM point, but not at another. My plan is to use the fuel values to tune to a safe AFR for general use, then use the fuel values to tune on the dyno, to maximum TQ at each RPM point, and the AFR will be what it will be. I'll set the SDS to run open loop for steady state highway driving and let the SDS ecu and WMS wideband work togather to get some MPG back.
When I get my dyno tune done I'll be sure to post results...