Jet II installed when I bought the truck 2 months ago.
Installed a Hyper Tech III programmed with Octane 87
Put in 93 octane just in case any problems.
Idle went up to 700 so will adjust idle screw to bring rpm down to 500.
Runs really good.
A lot stronger throttle sound coming from engine bay.
A lot more power.
Before at 500 rpm the idle would stumble a little (GONE).
Not bad for a 5.7 in a 3500.
Got my HyperTech off Ebay for $153.00
Saved me $200.00