anyone having problems with them on the 87 octane setting? or any of them... i heard some on here say that they were having probems with there trucks dying, and missing gears??? and that superchips was reprogramming them... these tuner work with all 04's right?? mine was made in june of 2004...

 

This is what you need right here. The only problem I’m going to have is needing back tires pretty soon.

Superchips Custom Tuning Xcalibrator for ALL OBD-II FoMoCo vehicles 1996-2005

 

Nope, no issues. My only problem is keeping my right foot off of the floorboard. I sometimes cringe when I'm on the freeway and mash the peddle, it gives a good solid KUUURRRRRR-CHUNK and then takes off like a rocket. I'm thinking all these hard shifts can't be good in the long run... time will tell!

 

now there is a ringing endorsement if i ever heard one.
Trev

 

Hard shifts are supposedly easier on the clutch plates than when it slips into gear softly thus extending the transmissions life.

 

That's what they say... but it sure as hell doesn't feel easier on the tranny!!

 

It is easier on the clutch plates.














Its just harder on everything else.

 

that hard shift is exactly why i took my tuner out for awhile. man its seems like the entire rear end is going to be left behind!!

 

Run the tow-preferred program, it shifts smooth even at WOT

 

I'm using 12 psi on the shift pressure which seems to give a decent shift during regular throttle acceleration. During full throttle the shifts are firm but I don't find myself looking in the mirror for parts.

 

i was using the tow program when i was getting these harsh slams... but only when on the highway and you mash it to pass, definately ugly tho.

 

I have an Xcalibrator and my tow-preferred setting shifts smooth at any throttle position even WOT. My two performance programs shift hard though.