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@cleatus12r Hopefully you can answer this instead of trial and error on my part.
Excursion PCM is AXD0 running VNAB1Y2 Hydra files. Torque convertor lock up is kind of lazy, light driving it will hardly lock up if you are on/off the throttle and under 45mph.
Looking for something with more predictable lock up as that is what I am used to with my other trucks.
Question is, can I run any other files? Will a VNAAAY3 file work and will it lock up differently?
The PCM is out of the picture with the Hydra installed. The tune on the Hydra completely replaces the PCM tune. Pick another tune from the Hydra menu, prolly something tow related which ideally will include quick solid TQ lockup.
@cleatus12r Hopefully you can answer this instead of trial and error on my part.
Excursion PCM is AXD0 running VNAB1Y2 Hydra files. Torque convertor lock up is kind of lazy, light driving it will hardly lock up if you are on/off the throttle and under 45mph.
Looking for something with more predictable lock up as that is what I am used to with my other trucks.
Question is, can I run any other files? Will a VNAAAY3 file work and will it lock up differently?
Don't use the VNAAAY3 because it's for a different PCM hardware (one that uses a glow plug relay). It wouldn't shift noticeably different anyway.
Use VRAA6Y3 or VRAA7Y5. Those will apply the torque converter clutch in 3rd gear at 35-40 MPH and hold until the 4th gear shift at 45 or so instead of your current calibration's STUPID 3-4 upshift and torque converter clutch apply at the same time at about 40 (unless you're accelerating aggressively).
Don't use the VNAAAY3 because it's for a different PCM hardware (one that uses a glow plug relay). It wouldn't shift noticeably different anyway.
Use VRAA6Y3 or VRAA7Y5. Those will apply the torque converter clutch in 3rd gear at 35-40 MPH and hold until the 4th gear shift at 45 or so instead of your current calibration's STUPID 3-4 upshift and torque converter clutch apply at the same time at about 40 (unless you're accelerating aggressively).
Great! The VRAA6Y3 files are just what I was looking for, shifting is spot on.
Instead of offering help next time someone asks directly, as was the case here, I will just keep the solution to myself.
or...others just can't accept the fact that, some people MAY KNOW more then them. There easy to spot so, instead of beating a dead horse, I just assist (if obligated), in grabbing parts off bench, tools or best, just pushing a broom.
Coming up on the list is bellowed up-pipes, a few gauges and the ported 1.0ar housing, maybe....
Some observations so far. Built the turbo that is in it about 2 years ago and never used it with a tune until recently. First let me say that EGTs are definitely higher than something like a T4, 38r or larger KC model. After putting only a 40hp Hydra file on I have started to question if it is worth going to the 1.0ar housing. For this application I am not sure if giving up spool time is worth it. Why? This turbo setup is BY FAR the fastest spooling turbo I have ever ran, ever. It was originally thrown together as an "experiment", the S300 turbine just hit the market and I was a beta tester, already had the ATS housing and then just took my pick at what compressor wheel to run. What an outstanding combination, need a sending unit for my boost gauge ASAP. I swear boost starts coming on at 1300rpm, such a connected feeling to the throttle pedal. The super low end boost is great off road!
In the past 2 months this truck has traveled over 700 miles off road.
2 trans coolers is generally not considered optimal. Downside is possible loss of pressure, IIRC what Mark K said. A single 6.0 cooler is better. Both sizes (26 or 31) provide plenty of cooling and no loss of pressure. Consider a magnefine filter before the cooler to protect it if the trans grinds itself into sausage.
New HPOP hoses, did not see them listed and the ancient OEMs gotta go before they pop and leave you dead on the road.
New serpentine belt and a coolant hose to go around would be on my list.
2 trans coolers is generally not considered optimal. Downside is possible loss of pressure, IIRC what Mark K said. A single 6.0 cooler is better. Both sizes (26 or 31) provide plenty of cooling and no loss of pressure. Consider a magnefine filter before the cooler to protect it if the trans grinds itself into sausage.
New HPOP hoses, did not see them listed and the ancient OEMs gotta go before they pop and leave you dead on the road.
New serpentine belt and a coolant hose to go around would be on my list.
What about the trucks that have 2 coolers from the factory?
Huh? I didn't interpret Y2KW57 and SSJ's comments as derogatory. I thought they mean that "You the man!!"
Don't go. We need your knowledge.
Exactly this /\ /\, @cleatus12r your replies are highly respected by most, in a similar way to Mark K's responses, especially those of us that are smart enough to know that we don't know any better
I'm not going anywhere. But when I'm described as arrogant due to one straightforward answer to a question directed to me and I reply to it, especially when it relates to something I have more than a decade of experience with, I get a bit defensive.
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