battinthecat
SDD Junior Member
Thanks for all the input. Still can't make the numbers work, 80 -100K to make the systems pay off.
I have a new 07 550 4x4 12' flatbed, real happy with mpg but always want more. Best I can figure it will take close to 100,000 miles to pay for it self. I'm not a hot rodder, don't care about exhaust sound. Just need to pull 14000# trailer. Any idea how many mpg's I can get with Banks? I was quoted $3600.00 for six gun and technicooler. Seem like a lot of$$$$$