Join Date: Dec 2005
Location: Littleton, Colorado
Bronco Info: 1993 F150 Flare Side
It should be throwing codes and a cell. These rigs will usually tell you what's wrong. You can, in some cases tune around a faulty part, but you shouldn't. The engine has to be mechanically sound and all the electronics working right before a tune.
Sound like something with the EEC, ignition, or even a relay if it just shuts down.
I tried a Powerdyne on a 1990 with speed density. It never ran to it's potential and once I pushed=it up to 9lbs of boost I lost a head gasket from predentonation. I had a bunch of problems with it till I did a mass air conversion, added a higher volume fuel pump, larger injectors, and a good tune with a Tweecer. Anything less thana good tune with a custom chip, Tweecer or Moates tuner is a band-aid!
The problem came before the tune, something else is wrong and the tuner should have caught that.
How much boost?
Did your tuner burn a chip, make a custom tune and install it?
01, Ranger Edge 4X4, 4.10's, 265/70R16, lowered, lightened, and with a Supercharged 4.0