I just got my truck tuned with HP tuners about 2weeks ago. Everything went great the guy done an awsome job. A couple days ago i hooked up a AFR guage before i get my N2O kit in. I Traced the Purple wire from the O2 sensor up to the firewall were i tapped into it, to go into the cab to the guage. Everything went fine drove it that night and didnt have ne problems, Now the last cpl days its started missing in low end like on the highay switching out of overdrive and light accelerating. The idile dropped from what the tuner set it at like 650rpms down to about 500 and is very rough. Just like it did when i done the cam swap before i got it tuned. When you start it cold, the idiling surges a couple time and then idels smooth untill warm and then it drops to about 500 rpms. Do you all think its something to do with the guage install or something with the tune going wrong?..The wire i spliced into was heathrinked and taped up theroughly.