ok i have had the htt sp66 on now for about a mos. like it empty truck pulls hard mid and top but gave it the test the other day with my 42ft gooseneck enclosed behind it i had a 95 cummins ex cab in it and a 5500 lbs track machine also, well,it worked but not good,it kinda has the on off thing your on it or off it,i bought the t bo used so wasnt a big deal question is what single to buy? i want twins but will have to wait also wanting to end up with around 550 hp thats plenty for this trk its a driver and tower htt 66 for sale, help me out guys

 

anybody??????????????????

 

64/71/13ss will do well for ya. Less lag less surging. I had it for 7months or so it worked awesome for everything

 

I have the 62/13/71 and love it for towing, because it spools fast, but with my smarty on #7 unloaded I can hit 1600 degrees with the boost at 45-47lbs. I would try the 64 like bluechrome said.

 

You can send it back to hightech and they'll down grade it for you to what ever you want for a reasonable price.

 

maybe an idea to down grade it to somthing that i could use now and after in a twin setup,but i might try it again with a smarty see how it is then,shure like it when im empty little slow to spool but then rips! think the stick might help too