Rail Pressure
I copied the sample TNTR #9 tune to my stock file and then smoothed out the rail pressure map.
My approach was as follows. I was always a fan of the Van Aaken C3.1 pressure box, which upped the rail pressure in the cruising / towing range and backed off the rail pressure ramp rate in the upper rpm range to OEM levels. For me, this also seemed to provided a bump in hand-calculated mileage too if my memory is still good. So this is what I attempted to duplicate.
Here is the stock TNTR #9 overlaid on my modified rail pressure map:
Here is the modified map by itself:
Here is the 2D map with stock TNTR #9 comparison to show where I adjusted rail pressures:
I took this tune out for a 20 mile test drive this afternoon. It feels smooth and off-idle through cruising rpm response is very crisp and smooth. No rattling anywhere. WOT hits 60 psi and 1000 degrees EGT. I'm going to tweak it some more as I mistakenly increased my idle to off-idle pressure a bit and when I have the cruise control on around 70-75 mph (2000-2200 rpm) it surges slightly.
I might also try closing the +44% load gap between the stock TNTR 9 map and my map as well as reduce the -44% load RP a hair. The +44% gap is 2000-3000 psi at most, which is about 40 HP and might be more beneficial for towing. The -44% load changes might help empty cruise surging.
I also need to get a new laptop so I can datalog with my Performax gauges.