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Old 04-18-2016, 02:04 PM   #1
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Custom tuning with 5 Star Tuning?

Morning All; anyone haven experience with changing the computer mapping with 5 Star? I'm assuming that I what this device does I would not min some additional HP......Would this create a warranty issue?
Thanks Guys

Got a 1998-2015 V10 RV? - 5 Star Tuning
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Old 04-18-2016, 08:26 PM   #2
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I read a great article in Mororhome magazine that measured fuel results said it fixed the uphill shifting and over revving problems that all the F53 chassis have. . It was a real eval not an advertorial. The tuner will increase toque and reduce revving and smooth out shifting. It also has the ability to reflash the prom back to factory defaults.

If it weren't for the price I would consider buying one. $495 as I recall. Is a bit pricey for me considering.
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Old 04-18-2016, 09:01 PM   #3
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I just bought the 5-star tuner about a month ago and this weekend was my first trip using it.

The short of it, is I ended up pulling over and resetting the tune back to the stock settings. I thought it was unusable here in Colorado going up and down the mountains. I wasn't able to pull up the passes at all with it programmed. I was somewhat loaded down with the family, water etc and pulling a Jeep YJ but after the 1st big climb, I could tell it wasn't going to work. My foot was to the floor and it just wouldn't down-shift into 1st or 2nd to give me some torque and get up to at least 40mph.

After finally topping out and trying 2 more big pulls, I ended up pulling over and resetting it. I bought it because of the high revving and sudden downshifting but in the mountains here in CO, the torque that the stock settings generate and ultimately keep me at 40-45mph going up Loveland and then Vail passes is better.

However, once down from Vail and out into Western Colorado where it's more flat, I pulled back over and reset the tune back to the custom 5-star tune. I will say, it does work better on the flats. The RPM's seem to be down overall while you're cruising along and also it sure doesn't try to down-shift quickly at the first hint of a hill.

I will keep the tuner for when I'm on the flats and for the gauge read-outs but from my experience, it just won't cut it climbing around here.
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Old 04-18-2016, 09:40 PM   #4
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Custom tuning with 5 Star Tuning?

Meat house. A great real use review! Thanks for sharing.

I was in the black hill of South Dakota and Wyoming at near Mt Rushmore and Crazy Horse and really wished I had a solution. Especially on the drive to Devils Tower. I ended up manually downshifting in the mountains and used the push button on the down hills.
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Old 04-19-2016, 06:07 AM   #5
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Were you towing at the time Techno?


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Old 04-19-2016, 08:49 AM   #6
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I would really like to ride in a 5spd model to see the difference between it and the 6spd. I know I'm not in Colorado, but pulling a toad through TN, KY, WV, VA, where there are some decent grades (6-7%) I never went over 3200 rpm or dropped under 55mph. I typically pull down into 4th and let it hold there until I crest. Those that have the 5spd, what are you doing with or without a toad? My toad is around 3k and didn't really seem to matter if I had it or not.


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Old 04-19-2016, 12:05 PM   #7
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Thanks for the great review---love real life experiences. I think I'll pass on the tuner for now. Barry
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Old 04-19-2016, 01:33 PM   #8
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Keep in mind that a tuner MAY void your drivetrain warranty in newer vehicles...even if you return to stock, the dealer can tell you used a tuner.

I find that I do best in mountains by using manual shift mode on my untuned 6 speed transmission.
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Old 04-19-2016, 01:41 PM   #9
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Old 04-19-2016, 02:09 PM   #10
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Turbs, you got a lot more to work with, you got a D-Max! 😀


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