If you have an 03/04 and you are having problems with your TST, please…. . PLEASE, call TST and let them know your having issues and what year truck you have. I have yet to convince them that they have messed something up in the programming for the 03/04s and have a lot of trucks that are now TST intolerant. If we can get their programmer to put in a little time, I'm sure they can figure it out, but right now they won't acknowledge that they have a problem. :-{} We need enough people with 03/04s with problems to call in order to get their attention.
Just a quick phone call to let them know you are having an issue…. . 812-342-6741.
OK, now that my groveling is over

... . …. .
VA's pressure box is awesome with big low end torque gains, yet keeps peak pressure to a minimum. Their duration box is the same, but with no timing can get pretty hot pretty quick. Problem free boxes. Can't wait for their new timing/duration box. Hope it can compete with the big guns.
Van Aaken's web site:
http://www.vanaaken.com/usa/index.htm
Any of these U. S. distributors can fill you in:
http://www.precisiondiesel.com/
http://www.piersdiesel.com/
http://www.dieselperformanceparts.com/
I think Doug's Fueling Box Matrix has an article or two on them:
http://www.nwbombers.com/membersites/doug/matrix.htm