U7165 R20 revision

[MikeWDiabloSport]

Please let us know how we did.
It your happy... let us know.
If your unhappy.. let us know that also.

We're not done with the U7165. We have more in store to add to it.

[Batman6t9]

On the 65hp I find the shifts are real firm. seems like the rpms are high. Power is there but seems at a dead stop it has a stall on it till it hits a certain rpm level and takes off. Roll on take offs are pretty strong. The 100hp tune has instant power and feels real strong and shifts are real strong. Didn't keep it on that tune long because i don't have a bigger exhaust system yet and dont wanna mess up the engine. My calid # is vxap2n2

[cole]

On the 65hp I find the shifts are real firm. seems like the rpms are high. Power is there but seems at a dead stop it has a stall on it till it hits a certain rpm level and takes off. Roll on take offs are pretty strong. The 100hp tune has instant power and feels real strong and shifts are real strong. Didn't keep it on that tune long because i don't have a bigger exhaust system yet and dont wanna mess up the engine. My calid # is vxap2n2

Just to let you know the shifting tables are the same on the 60hp to the 100hp tune.

To also let you know EGT levels on the 100hp tune are pretty low compared to what they were in the past. 1150 Degrees Fahrenheit at the manifold. So post turbo temps will be around 800-850 Degrees Fahrenheit.

[bigred05]

Thank you for getting the R20 done. My buddy and I have had our Predators for some time, but we went to R19 because of a dealer service. We appreciate your continued efforts to continue improving your product. So far I've had the 60 for a day and it seems fine. My buddy has had the 100 for a day and immediately noticed a lack of black smoke. That should mean his mpg's are going to improve.

[Batman6t9]

So i should be fine running the 100hp tune. Not saying that you recommend it. but i should be fine with it.

[rtprestw]

I have had r20 100hp loaded for a couple days; unfortunately I have been local and have not traveled as much as I normally do.

Mileage: In town my mileage appears to have increased from ~12.5 to ~14.5 on a partial tank according to the dash readout. I may be out of town this weekend and will provide highway feedback next week if things work out.

Shifting: There seems to be a difference but this could be due to the ECM learning again since r20 was loaded, time will tell. It is firm but in one location when traveling a grade at reduced speed r19 would down shift where r20 does not, observation only. Again it could be learning. By the way, how long does the learning process take?

Throttle feel: r17 had a very aggressive curve from just off idle through mid throttle and required foot control. r20 is much more linear very much like the stock curve. This could give a misconception regarding ones opinion of power. I’m still getting used to it as I need to push more to get her to go.

Smell and smoke: r19 was terrible at idle and my wife commented it was even worse behind me; she would not follow me anywhere. r20 is much improved. Smoke does not seem to be a problem. It is there at full pedal but I would not say it was overly excessive. It is for sure not as much as I have experienced on the farm more than 20 years ago with high sulphur fuel and farm equipment under load. Back then some tractors seemed to smoke more, much more, than others and we just said they were burning lighter knots (fat wood or kindling for some folks). It was full of pine sap and smoked a lot, but you could light it by just waving a match at it.

Power, or the conception of, and final thoughts: I would go back to r17 in a minute if I could, but that’s not an option since my last visit to the dealer. When I was in a hurry and pressed a little too much from a stop or slow roll she would roast my 12-35’s. I don’t believe r20 is that capable in the lower RPM range. I do think r20 is comparable to r17 as RPM’s increase. Maybe I need to put more foot in her earlier to see the difference… As a note my stock boost gauge has not exceeded 26-28psi with r20. More to come.

Truck has a 4" MBRP turbo back exhaust, cat removed with 4â€

[rtprestw]

The dinner bell rang and in my haste I forgot to extend my thanks for your efforts!

[Batman6t9]

Yeah i'd also like to say thank you

[cole]

So i should be fine running the 100hp tune. Not saying that you recommend it. but i should be fine with it.

Well im not going to tell one what they should or shouldnt run. But the tunes have been designed so that they will work on stock exhaust. We just do not want anyone to tow with this setting. You can run the 100hp tune and it will not cause problems with the truck.

[cole]

[quote="rtprestw"]I have had r20 100hp loaded for a couple days; unfortunately I have been local and have not traveled as much as I normally do.

Mileage: In town my mileage appears to have increased from ~12.5 to ~14.5 on a partial tank according to the dash readout. I may be out of town this weekend and will provide highway feedback next week if things work out.

Shifting: There seems to be a difference but this could be due to the ECM learning again since r20 was loaded, time will tell. It is firm but in one location when traveling a grade at reduced speed r19 would down shift where r20 does not, observation only. Again it could be learning. By the way, how long does the learning process take?

Throttle feel: r17 had a very aggressive curve from just off idle through mid throttle and required foot control. r20 is much more linear very much like the stock curve. This could give a misconception regarding ones opinion of power. I’m still getting used to it as I need to push more to get her to go.

Smell and smoke: r19 was terrible at idle and my wife commented it was even worse behind me; she would not follow me anywhere. r20 is much improved. Smoke does not seem to be a problem. It is there at full pedal but I would not say it was overly excessive. It is for sure not as much as I have experienced on the farm more than 20 years ago with high sulphur fuel and farm equipment under load. Back then some tractors seemed to smoke more, much more, than others and we just said they were burning lighter knots (fat wood or kindling for some folks). It was full of pine sap and smoked a lot, but you could light it by just waving a match at it.

Power, or the conception of, and final thoughts: I would go back to r17 in a minute if I could, but that’s not an option since my last visit to the dealer. When I was in a hurry and pressed a little too much from a stop or slow roll she would roast my 12-35’s. I don’t believe r20 is that capable in the lower RPM range. I do think r20 is comparable to r17 as RPM’s increase. Maybe I need to put more foot in her earlier to see the difference… As a note my stock boost gauge has not exceeded 26-28psi with r20. More to come.

Truck has a 4" MBRP turbo back exhaust, cat removed with 4â€

[rtprestw]

I prefer not to have the smoke usually that means more waste than performance gain. I have a white truck and trailer and want to keep them that way, enough washing as it is so no smoke for me. As noted, when I tow, I use the tow tune only. And if I loan a friend my truck I always return it to the factory tune, period, no matter the reason. I like the additional pep and occasionally use it, stretch her legs on occasion, but never abuse it. The few times I turned the tires was when a friend with another brand and I were playing around. It was brief just to make the point, wasn’t a bet but close enough. I found r17-100 to have the best fuel economy on the highway my main reason for using it. Thanks again for your support and reply. Will be in touch.

[haffne]

I found r17-100 to have the best fuel economy on the highway my main reason for using it. Thanks again for your support and reply. Will be in touch.

I would agree 100% with this statement

[dennisl]

I have a 2003 6.0 and the r17 didn't want to work at all. Truck would surge at 40 mph and didn't want to shift into gear unless the I played with the lever on the column. When you pressed the pedal it would take off, though. The r20 works great. Driveablility is awesome. I'm new to all this, though. Can you stack this with the powerpuck or something similar? Just wondering.

[rtprestw]

Highway mileage feedback: Just got back from my weekend trip where mileage was 16.5mpg by the computer for r20-100. This was all interstate (less than 20 in town) with cruise set at 70mph, tire pressure set as usual and no load.

[Lngbrdr]

Updated to R20 04FEB08. Tune seems to be running good. Currently have the 60hp loaded and all the surging-sputtering-dog performance-check engine light problems have not surfaced. Seems to be a little lag from idle until turbo spools up. Throttle response is good but not as 'snappy' or immediate as R17 was and that is basically all I could say needs work from the new 60hp tune. Boost hasnt gotten over 28psi and egt's havent gotten over 1000 with no load. The shifting is fantastic and power seems to be back, will 'chirp' hitting 2nd gear under 3/4 throttle with 35X12.50 tires. Also mileage seems to be back up. Will report when I get a full tank ran through...So far so good.
The tuner is finally performing as it should, good work guys.