stage one tune

stikbender

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Dec 21, 2015
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Looking for a good place to get my 15 SGS tuned in the Oklahoma City area.
I installed a SE breather and Vance & Hines Power duals exhaust, took to a dealer south of the City had it dyno'd with my SE race tuner. Rode it the next day over 200 miles and got 26.4 mpg! Just cruising, not hammering on it at all.
I called and made an appointment to have it retuned and they can't find out why the mileage is so bad, still awful Any help would be appreciated.
Thanks, Mike
 
First, that is, INDEED, awful mileage. I've heard of mileage dropping somewhat after a S1, because a good tune will richen your AFR somewhat, but in my experience, anything under 32-35 mpg on a big twin with a stage 1 when in the "cruise mode" (hwy travel) is pretty darn sorry.
Finding a "QUALIFIED PROFESSIONAL" dynamometer operator is tuff stuff. Some of these cats that graduate the MMI dyno tune course & get a gig at a dealer, scare me (not there's anything wrong with the vast majority of H-D techs that have come from MMI training, including their dyno operator course).

Do some long, hard, tedious research. I ended up having to travel 300 miles one way, and I'm one of the lucky ones. My dyno operator gets customers that make a family vacation out of getting their bikes properly tuned ...of course it does help that his shop is in FLORIDA, (about 30 miles from Disney World and about 65 miles from Daytona Bch.) He gets customers that make appointments from as far away as Canada and many of the northeastern states (usually coinciding with Daytona Bike Week).
By the way, I average 39 MPG per tank, & that's with a lot of 5,000 RPM 2nd, 3rd, & 4th gear bursts from impromptu stop light races with my riding buds. If I'm "touring" & traveling on Interstate or Turnpike at a steady "traffic flow" speed (70-75), I have gotten almost 45 MPG per tank solo & 42 MPG w/ spousling on the back. (Requires careful throttle management but I HAVE DONE IT).
Go on several different H-D forums & do lots-O-research. ...or take a FLA vacation & call Doc. Their are lots of good ones out there but you may have to travel... Good luck.

Rusty
 
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Stikbender,
Just a suggestion...
Give TTS a call. I have a TTS Mastertune 2 tuner (Great piece & preferred by many dynamometer operators).
But since you already bought & paid for a SERT as your tuner, tts "may" be able to help you find a competent & fair dyno guy. Steve Cole, owner of TTS is responsible for designing the Screamin' Eagle Race Tuner for the Motor Company's Screamin' Eagle division (lot's of folks don't know that). Some of Steve's trained certified dyno operators work at H-D dealers around the country, & he doesn't pass out certifications to just anybody.

Their number is 13106698101.
It may be worth a shot. Tell 'em your situation and ask for suggestions.
 
Stikbender
Continued....
Another idea which may or may not appeal to you...
I'm a "dyno-tune" fan 100%... Any Harley-Davidson I'll ever own will ALWAYS be tuned on a dynamometer..., but sometimes one of the auto tune type tuners just fit finances much better, especially... repeat ESPECIALLY if your stage one add ons are not the end of the road for your particular planned performance enhancements. Going back to a dyno every time you add performance upgrades can start to make your "Harley hobby" an expensive proposition. I, personally, only planned Stage One on my Street Glide (for reliability reasons) RIGHT FROM THE START, so I knew my route and had thoroughly researched my situation. I wanted every single molecule of of performance I could get out of my measly little Stage One 103", so a DYNAMOMETER was the way I did it.

Tuners w/auto tune are VERY POPULAR on here and there's some forum members that'll lead you in the right direction. You could save our sell your SERT.
 
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Looking for a good place to get my 15 SGS tuned in the Oklahoma City area.
I installed a SE breather and Vance & Hines Power duals exhaust, took to a dealer south of the City had it dyno'd with my SE race tuner. Rode it the next day over 200 miles and got 26.4 mpg! Just cruising, not hammering on it at all.
I called and made an appointment to have it retuned and they can't find out why the mileage is so bad, still awful Any help would be appreciated.
Thanks, Mike

Personally, I would go with the Vance and Hines FP3 Tuner. You can get one for around $300 online and you don't have to have some money hungry dealership install it. You and I are doing pretty much the same build. I am going to be putting on the SE breather because it's $150 and I will be buying the Power Duals to complement my 4' Slash Cut V&H Slip-ons.

The reason I say go with the FP3 is that it is made by Vance & Hines and it has an auto tune feature that will adapt to the way you ride. It will allow YOU to finalize the map and install it right from your smart phone. Dyno is a thing of the past with these new tuners. In my opinion, if you aren't planning on going past a stage 1 build for your bike you are wasting your money on a TTS. Great tuner, but overkill for what you have.
Plus, the FP3 has you ride your bike on "autotune" for a full tank of gas. This allows the mapper to tune the bike to YOUR riding style. No dyno is going to do that, don't waste your money at the dealer. Those guys usually don't have a clue what they are doing anyways.
The FP3 allows you to add parts and take away parts and you can keep "re-tuning" the bike as you see fit.

Look at it this way, you take your computer to a repair shop and tell the guy "hey my computer isn't working right, it seems to be slow". That guy is going to do a series of tests and clean up what he can. Then, when he is on the computer it seems to be running just fine... so he gives it back to you and tells you it is fixed. What he doesn't know is that when you are experiencing your issue, you have multiple programs opened up in the background and the actual computer can't handle what your are trying to process. That guy is NEVER going to know that because he isn't actually seeing you have the issue.
Dyno's are just like that in my opinion. I had issues with my old bike and a certified dyno tech that just couldn't get the mapping down right... one of the issues was that I ride differently than he does. He can take the bike out and never have it backfire on him because he wasn't riding the bike as hard as I was. (this was in my Jap crap days)
Self Tuning is the future of fuel management. Go to Vance and Hines website and check out the FP3. See what it does and how much of a difference it will make just installing it on a stock bike without head pipes or a breather... the gains are better than any H-D tune you are going to find.


I understand getting the most out of your dollar and your bike. One thing I had to accept, and some will never accept this, is that we have purchased a cruiser. It isn't made to be a race bike. If you want it to be a race bike it costs a ton of money to get it built out to that point. I had to accept the fact that if I want to go 180-200 MPH then a sports bike is what I should be riding... not my dresser H-D. With that being said, I personally wouldn't touch the cams in the bike. (May get arguments the other way on this, but again, the gains just aren't there to spend the money and not just go do a full engine build)

Good luck with your search and don't just buy stuff because someone else said it was a good idea... look up what the products do. I was sold on that TTS until I realized I was going to be spending an extra $150 for nothing because I don't ever plan on going past cams in my bike. The FP3 will tune up to cams in the bike... if you go past that then the TTS is going to be the best option in my opinion...
 
You can do some self tuning with a SERT tuner, you CAN get the cables and hook it up while you ride and it WILL learn your riding style. It takes a little more effort on your part, but you will have your bikes full data set on your computer when you are done. Go to the Harley-Davidson website, and you can download the software there, the cable are available from HD, e-bay, and Amazon.
 
You can do some self tuning with a SERT tuner, you CAN get the cables and hook it up while you ride and it WILL learn your riding style. It takes a little more effort on your part, but you will have your bikes full data set on your computer when you are done. Go to the Harley-Davidson website, and you can download the software there, the cable are available from HD, e-bay, and Amazon.

wow,didn't know you could do that with the SERT thanks!
 
I got an appointment friday morning with GMR Performance in Fort Worth for a dyno and tune. We talked at length about tuning and he explained alot to me. Will post his findings when I get back!
 
dyno15.jpg

here is the verdict,sheet shows the tune from the dealership and the new tune. The damn dealer had the motor listed as a 116ci, fuel was running 30% too high average across the rpm range, among other issues. Glad she's fixed!
 
Glad you were able to get it dialed in.

That's why research and "vetting" is required when you are looking for a COMPETENT, PROFESSIONAL DYNAMOMETER OPERATOR. Any Harley-Davidson Dealership should be able to afford to install a $60,000 Dyno-Jet Chassis Dynamometer. The key is to have an operator who is properly trained and has credentials and lengthy experience to be able to operate the entire process correctly. Unfortunately, those operators are a rarity.
A 4 hour class and a few Utube videos doesn't make you a professional. It's sad, but fairly common. You really have to do your HOMEWORK to find the right dyno-tuner.
 
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