My 06 5.4 with troyer 87 perf tunes drops 200 RPM when shifting frorm 2nd to 3rd at about 1/4 throttle.It dosen't miss or stumble it just drops rpm and then picks up real good instead of powering right on through.By the way it's an auto tranny.Any thoughts? Thanks in advance..

 

RPM is supposed to drop when it upshifts - it's not a CVT.

 

Mine drops 1st & 2nd and again 2ND to 3rd and believe it or not again to over drive WTF I'm taking it in for repairers any Ideas how much this will cost me

 

So does mine. It even changes with the lockup on and off.
Think I could get it fixed for a few clams?

 

It ain't broke so don't try to fix it! This is normal.

 

I understand the rpm drop when going to a higher gear.This is like a partial power loss feels like someone pulled the plug for a second then picks up like it just got a shot in the azz. Hope this sorta kinda explanes it better.

 

It's probably your lockup torque converter. If it's dropping RPMs in a gear before it shifts, that's the torque converter locking up. Mine does that, it especially does it when towing. It's normal.

 

All of them do it.Put your foot into it!!!!