I finally ordered my tune from Nelson! Told Allen all I use is 93 and to give me all the power he recommended for my setup and that I liked to race! He is a cool guy!! I'll make th trip down there sometime in 04' I'm about 6-7 hours away! Take car of me Allen!!!!!!!!!!!! I'm in a 03 4.8 stock 3:42 open diff but that will soon be changed current mods are only Fipk II and 50 series flows what should I expect????????????????????????

 

you will not be disappointed dude. allen's tunes are tops.

 

What does tow/haul affect with your tune? I mean is it safe to use?

 

If you had an HPP3 before, you will see a significant difference with Nelson's tune.

 

I have the 93 tune on a 02 4.8. Best Money ever spent, it was a night and day improvement just after install, and about 500 miles later is incredible. You will not be unhappy. Allen

 

lookout