I am asking for assistance in identifying and installing an alpha numeric OS or TPS/ RPM Op system for a 2012 Z06. I an fighting reversion in the 1k to 1.6 K rpm area. I have adjusted the timing and followed the guidance found on the forum adjusting the injector timing but am getting no positive effects. A good friend and old time tuner suggested asking someone on the forum for the above. MAF/ VVE work great above 1.6 K and would like to be able to revert to same once I leave the low RPM/TPS range. Please respond as you have the time. Current Op system is 12647991.