ISX400 Tune

[Waterloo]

Automatic or manual? If a manual, swap out the gears in the rear end, say something around 3:55 or so. If an auto, sell the truck. Just kidding... Kind of...

What are you planning on hauling? Van, flat, heavy, light? Tanker?

What are you going to do with this truck? You driving it or putting a driver in it?

The HP is not going to help much with that gearing, but I believe the ST can be bumped up to a point.

How many miles on the truck? And you do know about the fuel pumps? That would be the first thing I would do before putting it in service.

Have you looked under the top? Open her up and inspect the cam shaft? You will need to run an overhead too... Actually, there is a laundry list of stuff that you will need to tackle before putting the truck into service.

You will need the Cummins Inline reader with the Insite software, you supply the laptop. I keep mine in the truck, it is like American Express, you do not leave home without the reader and laptop.

Tell us some more on your plans and your mechanical abilities.