Auto Tune Installed
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
If you lean the target AFR's in the cruise range enough you should be able to retain near-stock gas mileage if you can tame your right wrist. Twisting the throttle gets you into richer territory and if you venture there frequently it will affect mileage. Of course set lean it will run hotter than you may like, but adding an oil cooler helps greatly. I have 14.5:1 set for the cruise range and on a recent trip was neck-and-neck in mileage with a friend's '08 RK in stock trim except mufflers. When I had the stock cams I could go to 14.7:1 but the cam upgrade is less tolerant of very-lean AFR's.
I have the PCV, AC, Jackpots, and SE255 cams installed--so I'm very happy with the mileage I'm getting, which varies from 36mpg (city riding in winter) and 50mpg (consistent 50-55mph). I don't think I can do better with this bike.
I have the PCV, AC, Jackpots, and SE255 cams installed--so I'm very happy with the mileage I'm getting, which varies from 36mpg (city riding in winter) and 50mpg (consistent 50-55mph). I don't think I can do better with this bike.
Tourer
Joined: Jan 2008
Posts: 391
Likes: 0
From: Fort Worth, Texas
Pretty much the same as my experience. I really like the AT and it seems like the longer I ride with it the better it gets. I have saved the trims several times and my stored map seems to be getting very close. Pretty soon I plan to add a switch so I can switch AT on and off. That way I can store my base map and then set AT up to run with leaner AFRs for a little better fuel mileage. WHen I run in hotter weather, I can then switch AT off and be running on the richer stored base map.
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
I am enjoying my AT as well. Here is what I did with installing a switch. I bought a small single throw switch from Radio Shack and used one of the existing round holes that are located on the left side of the frame under the seat. I was able to easily feed these wires to up under the seat to the PCV. I have the RJ Originals so they hide the switch.
Last edited by iclick; May 20, 2009 at 04:53 PM.
Cruiser
Joined: Oct 2007
Posts: 108
Likes: 0
From: FL
no tach
WOW, im sure its a great system and im not trying to dog it HOWEVER no tach above 5100 man your taking a chance here... Thats why I would not go with a piggy back system.... just my thoughts...So all in all how much money do you have in both systems?
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Road Warrior
Joined: Apr 2008
Posts: 1,266
Likes: 7
From: Indianapolis
The PCV was $299.00 plus shipping and the AT was $299.00 plus shipping. Bear in mind that when I bought the PCV, it was part of a Power Package which included Jackpot mufflers and a SE A/C. The Power Package was $670.00, so the total outlay for where I am now is $981.00 ish, including everything. Pretty amazing deal in my opinion, as one tends to forget the value of the amount of development that went into the supplied map.
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
This must be an issue in later-model bikes, as I've seen my '07 tach go to the 6200 redline several times. I rarely go above 4000 on this bike but the tach does work above 5120 RPM's. On affected bikes I wonder if a dealer adjustment with the Digital Technician would fix the problem. Unless the cost was low I would just live with the limited tach readout unless you venture in that territory often.
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Road Warrior
Joined: Apr 2008
Posts: 1,266
Likes: 7
From: Indianapolis
Honestly, the tach readout doesn't bother me at all. It's fine up to 5100 and the only reason I have been up there and higher is while I'm going through all the ranges for Auto Tune. I was concerned about it until I spoke with Jaimie, because I thought I had a problem, turns out it's normal.
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