hi guys i have an 03 screw 4x4 with the 5.4 and 3.55 gears ive got an airaid intake and flowmaster 2 chamber exhaust my problem is that on any tune setting other that return t stock it blubbers off the line if i give it full throttle tuned stock it can do a brake stand on towing it cant its really frustrating i cant figure this thing out ive tried to do a custom tune but thats from scratch not just letting you tinker with the factory tunes any help is very appreciated
thanks
Gary