We  do not recommend towing more than 10,000, on flat ground and 8,000, in  very hilly or mountainous terrain, with a file, any file or anybody's  file.  This file is the alternative.  With the transmission shifting  properly you will feel the truck to be stronger (+/- 20hp).  This is  also the file we recommend if you have injectors bigger than a 30%  nozzle and want to tow more than 10,000 lbs. 

 Designed  for pulling.  A normal tow file is about 50hp, when aggressive can  range between 65-75.  We can also add jake brake to any tow file.  This  feature works with the exhaust back pressure in your truck and you must  have your tow-haul on when pulling weight but don't need to turn  tow-haul on if not towing. 

 Designed  for people who tow often and/or tow heavy who don’t want to change  tunes when not towing.  It is an economy/tow type file with 80-85hp and  most people find it very fuel efficient.  It is also the file we  recommend for when it is very cold, the streets are slippery or the  weather is just bad.  

 Designed  for highway driving.  It's driveability parameters are intensified for  ease in passing and maintaining higher speeds for longer periods of  time. (90-120rwhp)   

 Designed  for daily driving.  It is very similar to the Looney and for some it  feels stronger, while for others, the Looney is still the one.   Basically we applied parameters from the Looney Wild that provide more  airflow, in an attempt to increase fuel mileage. (130-160rwhp)   

 20-30  hp more than the Looney but we only offer to customers with aftermarket  headstuds.  This is a daily driver file and seems to be the most fuel  efficient we offer for the 6.0L (150-190 rwhp)