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Old 05-19-2019, 07:42 AM   #1
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V10 Tune Ultra RV tune

Thinking about getting a Upford handheld tuner for the shifting on transmission
on the V10
Anyone have this and what are your thought's

Thanks for any info

Jim
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Old 05-25-2019, 12:23 PM   #2
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That appears to be the same as what I bought from 5 Star Tuning for $450 back in 2017.


I bought it because I was tired of listening to the roar of the engine revving over 4,000 rpm every time we hit a very slight slope (like crossing an overpass). The initial tune they provided was definitely an improvement over stock, but I wanted even more.


So I wrote them and said I would prefer that the engine not rev above 3000 rpm or so, even if it means that the speed will decrease by 15 mph. They sent me another custom tune (for free), and now I'm very happy with it.


I can leave the cruise control set at 60 mph, and if we start a long uphill climb. the speed will drop, but we won't have to listen to the engine roar.
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Old 05-25-2019, 12:31 PM   #3
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Originally Posted by vacationlovers View Post
That appears to be the same as what I bought from 5 Star Tuning for $450 back in 2017.


I bought it because I was tired of listening to the roar of the engine revving over 4,000 rpm every time we hit a very slight slope (like crossing an overpass). The initial tune they provided was definitely an improvement over stock, but I wanted even more.


So I wrote them and said I would prefer that the engine not rev above 3000 rpm or so, even if it means that the speed will decrease by 15 mph. They sent me another custom tune (for free), and now I'm very happy with it.


I can leave the cruise control set at 60 mph, and if we start a long uphill climb. the speed will drop, but we won't have to listen to the engine roar.
And won't you have to use the accelerator to keep the rpm up because your speed control will have kicked off? If so, what's the point?
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Old 05-25-2019, 06:39 PM   #4
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Originally Posted by vacationlovers View Post
That appears to be the same as what I bought from 5 Star Tuning for $450 back in 2017.


I bought it because I was tired of listening to the roar of the engine revving over 4,000 rpm every time we hit a very slight slope (like crossing an overpass). The initial tune they provided was definitely an improvement over stock, but I wanted even more.


So I wrote them and said I would prefer that the engine not rev above 3000 rpm or so, even if it means that the speed will decrease by 15 mph. They sent me another custom tune (for free), and now I'm very happy with it.


I can leave the cruise control set at 60 mph, and if we start a long uphill climb. the speed will drop, but we won't have to listen to the engine roar.
I tried to order the tuner and was told it is not legal in California. Were you told the same, even there website says "This product is not legal for sale or use in California on pollution controlled motor vehicles. Thus, this product will not ship to addresses in California due to state regulations".
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Old 05-26-2019, 07:44 AM   #5
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Quote:
Originally Posted by vacationlovers View Post
That appears to be the same as what I bought from 5 Star Tuning for $450 back in 2017.


I bought it because I was tired of listening to the roar of the engine revving over 4,000 rpm every time we hit a very slight slope (like crossing an overpass). The initial tune they provided was definitely an improvement over stock, but I wanted even more.


So I wrote them and said I would prefer that the engine not rev above 3000 rpm or so, even if it means that the speed will decrease by 15 mph. They sent me another custom tune (for free), and now I'm very happy with it.


I can leave the cruise control set at 60 mph, and if we start a long uphill climb. the speed will drop, but we won't have to listen to the engine roar.
Thanks for your info
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Old 05-26-2019, 09:48 AM   #6
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And won't you have to use the accelerator to keep the rpm up because your speed control will have kicked off? If so, what's the point?
Here's what happens now, with the 5StarTune:

1) We driving along on level ground with the Cruise Control set at 60 mph. The engine rpm is about 2K.
2) We start climbing a slight grade, and our speed drops to 59.
3) The engine rpm starts increasing, to maintain the speed at 60.
4) When the rpm gets up to 3K, it stops increasing, so our speed starts decreasing.
5) As long as our speed stays above 45, the rpm doesn't go above 3K, and we're happy.
6) If the grade is steep enough, or long enough, and the speed drops below 45, the transmission will finally downshift and cause the rpm to go over 4K. At that point, I'll disengage the Cruise Control.

Before the 5StarTune, the engine would've gone to 4K rpm almost immediately.
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Old 05-26-2019, 09:52 AM   #7
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I tried to order the tuner and was told it is not legal in California. Were you told the same
No, I wasn't told that, although I did wonder about it.

However, the literature did say that I should restore the factory tune before selling the RV, and possibly before having any major engine repair done.
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Old 05-26-2019, 10:56 AM   #8
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Originally Posted by vacationlovers View Post
Here's what happens now, with the 5StarTune:

1) We driving along on level ground with the Cruise Control set at 60 mph. The engine rpm is about 2K.
2) We start climbing a slight grade, and our speed drops to 59.
3) The engine rpm starts increasing, to maintain the speed at 60.
4) When the rpm gets up to 3K, it stops increasing, so our speed starts decreasing.
5) As long as our speed stays above 45, the rpm doesn't go above 3K, and we're happy.
6) If the grade is steep enough, or long enough, and the speed drops below 45, the transmission will finally downshift and cause the rpm to go over 4K. At that point, I'll disengage the Cruise Control.

Before the 5StarTune, the engine would've gone to 4K rpm almost immediately.
So, you set cruise at 60 and at 45 it has not automatically disengaged. Typically, cruise will automatically disengage when speed drops to about 10 mph below set speed. Sounds as though 5Star has manipulated the cruise control disengagement speed spread some how and allow speed to drop beyond cruise normal disengagement and/or throttle increase to maintain set speed. See no difference in manually disconnecting cruise (tap brake) when starting up a steep hill and manually controlling the throttle and manually down shifting as necessary. Which is what it sounds like you eventually have to do. I would also add that it sounds as though your cruise set speed is not very well maintained if the downshifts are allowing a greater reduced speed before engaging. Oh well.
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Old 05-27-2019, 09:59 AM   #9
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See no difference in manually disconnecting cruise (tap brake) when starting up a steep hill and manually controlling the throttle and manually down shifting as necessary.
Well, the difference is that I don't have to do that stuff manually, which is the whole point of having cruise control.

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Which is what it sounds like you eventually have to do.

Yes, if the hill is long enough or or steep enough. But most of the time, we can cross overpasses, or climb small hills, without having to listen to the engine over-rev trying to maintain speed, which is how it used to behave.
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Old 05-27-2019, 01:55 PM   #10
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Personally, When I get up into mountains, I do all my shifting manually. There is a reason you want the RPM to be at or close to 4000RPM, it's easier on your transmission/engine and peak HP is at a higher RPM.


If I am in a steep grade, I never have the cruise control on.
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