Is the Auto Tune worth the extra $ with PCV?
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Road Master
Joined: Oct 2007
Posts: 755
Likes: 1
From: Denver
Is the Auto Tune worth the extra $ with PCV?
I ordered a PCV but am still unsure about the auto tune. Who is using them and are they worth the extra cash? If I do cams this summer will they really help tune then also?
Thanks in advance.
Thanks in advance.
Road Master
Joined: Jul 2005
Posts: 1,018
Likes: 0
From: Front Royal, Virginia
I'd install the PC V first. You can always add the Auto tune. I just bought a PC V from Fuelmoto for my 09 SE Fat Bob. Having bought two other PCIII's several years back, I was very skeptical as I had bad experiences with both. With so many good reports about Fuelmoto I thought I'd try a PC once more. It came plug and play. I wanted something that would cool the bike and keep the rear cylinder from cutting off. It did just that. I also did not want the drivability effected adversely and it wasn't. Lastly I wanted to maintain my 38.5 MPG average, though I was warned I might loose a couple MPG. Well, I actually gained 7 MPG. I confirmed this good news with a second tank coming in at 42+ MPG and that was with quite a bit of playing.
Gary
Gary
Tourer
Joined: Aug 2007
Posts: 466
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i have auto tune on my thundermax, if it works like thundermax then you will have the same fuel ratio all through out every rpm example if it is set at 13.0 you will get 13.0 at every rpm. which is easy but not always good for gas mileage. over time it will adjust from the base map to achieve this 13.0 but wont change the base map and you tend to get decel pop from the jumping around of air to fuel ratio. i leave the auto tune off during cooler months and use it during the hot months (make it rich).
Road Warrior
Joined: Jan 2008
Posts: 1,549
Likes: 18
From: Upstate SC
i have auto tune on my thundermax, if it works like thundermax then you will have the same fuel ratio all through out every rpm example if it is set at 13.0 you will get 13.0 at every rpm. which is easy but not always good for gas mileage. over time it will adjust from the base map to achieve this 13.0 but wont change the base map and you tend to get decel pop from the jumping around of air to fuel ratio. i leave the auto tune off during cooler months and use it during the hot months (make it rich).
As to whether it is worth it or not - I would probably buy it again but the original Map from Fuel Moto was very good and if you change something they will send you another map. I like the AT and am glad I installed it.
Last edited by JustDennis; Apr 6, 2009 at 11:46 AM.
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