Join Date: Jun 2009
Feedback Score: 0 reviews
I recently installed a DieselManor Isspro gauge set, (EGT, trans temp and boost). I have experimented with the tow haul on and without on my daily route to work and back. The previous posters are correct about the stock trans temp gauge not being an accurate indicator of temp during hill pulling, I climb a 7% grade that is 9 miles long to get home and the stock gauge never moves from mid position. The Isspro temp gauge starts climbing as soon as the work load increases, along with the EGT. I find the truck is probably capable of doing a melt down on this hill in stock condition let alone if it was modded. By this I mean the harder the truck works, the harder it seems to want to work. It has more power than I think is safe to use. Last week the afternoon ambient temps were around 100 degrees and climbing my hill the Isspro trans temp gauge climbs to around 220, EGT is at 1200 degrees and the truck has more throttle I could apply!! I think if I went to WOT meltdown would be imminent. This was using the method of building speed at the base of the hill and attacking it at 60 mph and keeping a slight increase on the throttle without causing a down shift, this method causes the highest increase in EGT and trans temp. Using the tow haul mode road speed is only slightly slower but rpm is much higher allowing a significant lower EGT, slightly lower trans temp and lower boost pressure. I also monitor my fuel mileage and have found almost identical results using the tow haul mode on my hill climb.
As a side note there is a page devoted to explaining "Gauge readings and recommendations" that is worth reading and following in the installation instructions that came with the gauges. Transmission life relative to fluid temperature is an eye opener. Shut down temp recommendation to ensure proper turbo bearing cool down is another good topic discussed.
Good luck with your PSD larwar and thanks to the other posters on this forum for helping me with the good information about gauges, coolant filters and Nitrite testing, using the Motorcraft filters, oil, fuel and air along with the fuel additive debate, trans and engine oil and finally proper coolant.
04 PSD 6.0 F-250 4x4 Lariat crew cab long bed. 4" Magnaflow exhaust with muffler and cat, Lt285/75R16 Duelers, Carryboy camper shell. Coolant filter kit. Under cubby hole 3 gauge mount, pyro, boost, and trans temp (Isspro EV).