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Old 09-13-2015, 08:19 PM   #11
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We just bought our 364TS in June so we haven't had much time for mods. Getting a front-end alignment on Friday. We are also new to the motorhome lifestyle and still learning a lot. (This forum is the bomb). I just ordered the 5startuning and haven't gotten it yet - I'll post a review ASAP. I'm mainly looking for better shifting through the mountains (although a little better fuel economy would always be nice).

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Old 09-13-2015, 09:06 PM   #12
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Location: Spring Valley OH
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I've heard nothing but good about 5startuning. But, I haven't heard anyone on this thread address the negative impact it can cause on your warranty. Please chime in.

2018 Berkshire 38A
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Old 09-14-2015, 05:11 PM   #13
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Don't you have to use premium fuel with the five star tune?
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Old 09-14-2015, 09:51 PM   #14
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I agree with Vince would this not void the warranty with Ford or Forest River
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Old 09-15-2015, 07:05 AM   #15
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5startuning and Powertrain Warranty

I am definitely not an expert, but here is the reason I purchased the 5startuning despite concerns about the powertrain warranty:

1. After searching the irv2 forums (and this one), I have yet to find a single person who had an issue with their powertrain warranty after custom tuning. The Magnuson-Moss Act places the due diligence on Ford to prove that any powertrain issue is a direct result of the custom tuning.

2. Living in the mountains, I am willing to take the (small) potential risk of a warranty issue to benefit from the better drivability.

3. My goal is to keep it out of the shop - I believe that controlling the shifting pattern to keep it 3000-3500 RPM going up the mountain takes a lot of stress off the powertrain compared to 4000-4500 RPM.

Again, this is just my opinion and almost everyone on this forum has more experience with the RV lifestyle/mechanics than me.

Happy campers :-)
2015 Georgetown 364TS
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