I've finished installing my Alky Control kit and took a scan of it. I wasn't sure whether the IAT would drop enough and/or quickly enough to be able to add timing and have it removed in case of a meth failure. I'm using 100% VP M1 meth through two nozzles (one M10 and one M15) that are ~2" ahead of an LS3/7 card style MAF which is ~8-10" away from the throttle body. I run a 2 bar SD tune so I don't care that I'm spraying through the MAF. I do see a P0102 (MAF low frequency) DTC when I spray if good. The controller is set to the defaults for turn on and initial. The first stab can be seen from fram 4079 to frame 4174. This run was done with the remote controller's gain set at 5. IAT drops from 88 (which is what the ambient was) to ~66 starting at ~6.5 PSI. Next I increased the gain to 8. This is from frames 6495 to 6580. IAT started dropping at ~5 PSI and got as low as 61. Next I turned the gain down to 3: frames 7579 to 7648. IATs only dropped to 70. In all three runs the WB dropped to low 11's. Not sure if you guys can see that in the log due to piping it through the AC pressure sensor.
So I need to drop the turn on pressure so it kicks in closer to 3-4 PSI and I know more gain lowers my IAT more. Still have yet to play with the initial pressure. I'm curious how much the gain and/or initial will change dyno results. I think it will depend more on how much gain allows me to add how much timing. I now know for sure that I can edit my IAT spark base table in the upper g/cyl and lower IAT range to add timing and it will automatically be removed when IAT's get higher should the meth fail or I run out. So for me it would be adding timing at <=70 degrees IAT. Now in the winter its not as save but in Houston ambient temps aren't lower than 70 for very long over the course of the year and if the meth were to fail with ambient of 65 the non-meth boosted IAT would be >70 in a hurry. Guys in parts of the country where they actually have seasons....not sure what to tell you. Thats the price you pay for nice weather.
Also attached is a log of the meth turned off (meth-home). Frames 6680-6779. IAT went from 88 to 108, short shifting at 5500. Ignore the AFR's on that log because for reasons I cant explain, HPT read about a point leaner than the AEM gauge on the way home even though I calibrated the offset before the first log and it was spot on...My offset seems to change at random. I need to make sure it's good before each log.