So.... I got the wire harness stuff sorted out. All installed with no problems. No check engine light. No apparent issues. Passing the one wire through the firewall wasn't too bad. I fished too flat he's screw drivers past the grommet from the inside. Then just spread them apart and slipped the wire in. Does it do what it claims? Yes. It is noticibly more powerful. It's not one of those where you have to think about it and convince yourself it's doing something. Particular in sport mode, the performance difference is VERY noticible. It pulls harder for SURE. So much so that it feels like a different truck. The down side is that it does not do much for the turbo lag. If you aren't spooled up over 3000 rpm you really can't appreciate a difference. The power difference comes on around 3000RPM up over 5000 RPM. Is it worth 300 bucks? yes.