Hi mike, Thanks again for the infro. Should I subtract from the tire revs, or add to? By how much? With the speedo reading 3 mph faster than the gps. I think you subtract from the tire revs. Also, How may tire revs equals 1 mph?

Hey Mike:

Updated the programmer. The update did help the speed come in closer. Now when I am going 60 mph on the speedometer, the GPS is reading 57 mph. So could I tweak the tire revs to get the speedo closer to the GPS speed? Right now the tire revs are set at 617 (tire size 285/70/17). I think I ...

Thanks Mike For the quick response. As soon as I get the cable and power adapter. I will down load the new revision and see what happens.


Thanks

Does this latest revision( 9r04) keep the same benefits of parameter adjustability as the revision 8R02? For example, adjusting for injector size, global spark timing, rev limiter, transmission shift points, OBD2 parameters, etc. Or will I lose some of the adjustments, or gain new ones and what ones ...

2002 Ford F150 5.4L VIN. L

Diablo Sport Predator U7153 revision 8R02

Just recently installed bigger tires and new gears. Tires are a 285/70/17. Set the tire revs at 616.

Set new gear ratio to 4.09. Speedometer reading is off. When vehicle speedometer is reading 60 mph, my GPS is reading 53 mph ...

I just look at the revsion in my 7153 it is 8r2. Should I download the newest revsion. In the download there is 9r02,and 9r03. I would say the 9r03 is the newest. What are the benefits of the 9r03. Does it remove any of the features of the 8r2. Like shutting off the rear o2,tire size,shift firmness ...

Predator part u7153,9r02 2002 f150 fx4 5.4

The truck has a magnacharger supercharger(root style m90 eaton). Plus it uses there fmu(fuel management unit). The truck run good, but the stock injectors are getting old with a lot of miles on them. So i was thinking of doing away with the FMU. Installing ...