I've looked through methods of reducing timing via a switch with the p59 pcm and come up with just the typical IAT mod the N2O guys use. I was trying to find a pinout to see if there was a traction control ground out pin or something I could use to activate that spark table but I've found nothing for hptuners, just some thing for efilive.
Which led me to thinking about the flex tunes and the flex fuel sensor. I've never messed with a flex tune since we have no ethanol fuels here and I dont know how fast the PCM can switch the tables without throwing a code or something. But what if I made or bought a small 5v squarewave generator that output the proper signal to trigger the flex settings and used a push button switch to change it's output from 50 to 150hz (0% to 100% ethanol)?
Could I copy over all the fuel tables and AFR settings and make everything identical except the spark tables? That way I could change spark for octane or traction with a switch?