hi guys i have an 07 lariat 4x2 .. and im using an edge programmer ... every time i program my car it just kinda dies at high rpm and if i did a custom tune i cant get the shift firmness thing the car just wont work well wut should i do ....

 

Did you increase the Rev limiter? Mine would cut out at around 5100 - 5200 RPM until I raised the Rev limiter and now it is fine. Now I get belt squeel (soon to be fixed).