After the fueling was sorted...
After the fueling was sorted out, we could carefully put some spark advance back into the mix. With the added boost from the smaller blower pulley, we needed to rescale the fuel and spark tables out to a greater load range. This forced us to completely rework the borderline detonation spark advance table. The final revision is shown here.
This brings up an important aside for the newer EEC stuff where the IAT sensor is integrated into the MAF sensor. If you have the MAF sensor upstream of a supercharger (a "draw through" MAF setup) the EEC will never see the higher inlet air temperatures from the compressor, and thus not retard the spark advance as necessary. For these installations, it's imperative to also install (and correctly wire) an IAT sensor somewhere in the inlet ducting after the supercharger. For our supercharged Cobra, the factory thought ahead and added a second IAT sensor after the supercharger.
OK, back on topic: After a bunch of dyno runs, tweaking the tune slowly and carefully along the way, we ended up with 470 rwhp, 490 lb-ft of rwtq, and a safe A/F ratio at the bottom of the 11s (equivalent to mid- to high-11s with straight gasoline).
At the end of the day, when we were happy with the tune, we went back into it one last time to reenable adaptive strategy. At that point, we were done.
In the end, our custom tune...
In the end, our custom tune netted us an additional 10 rwhp over the off-the-shelf tune from the flash tuner. Custom tuning has its rewards.
Since we'd be nuts to run the stock tune in the modified Cobra with the added boost, we used a flash tuner "box tune" as a baseline for comparison. In this case, our custom-tuned numbers weren't up huge amounts compared to the box tune, but they were still up enough to make it worthwhile (oftentimes custom tuning finds significant gains in power and driveability over mail-order chips/tunes). Add in the confidence of knowing the tune is still safe for general consumption, and you can see why custom tuning has its place in the world of EEC performance.