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Hi Brian, there is always a trade off when seeking more performance and usually its fuel milage especially on heavier bikes. That being said going from 42 mpg to 27mpg is a bit excessive. Was there a significant change for the better in performance? Did they go larger injectors or bigger jets? Dialing those down a bit would increase mpg. Also was any remaping involved? I would go back to the shop and ask them if loosing half of your mpg is normal for a stage one kit. Good luck
nomads are heavy bikes mate and i feel all is as should be with yours, top gear is usually for on the straight and cruising, at a constant speed. my vtx 1800 does similar albeit only 5 speed i still have to pull down a cog and work the gears on hills. the mpg doesnt sound a miss for the nomad either. my vtx does similar.
Well, here you go. The Thunderslide does the exact same thing as the accelerator pump in the stock carb. So, basically, you've got two accelerator pumps on your bike. My bike gets about 45 MPG so in light of this, your mileage is about what it should be with the Thunderslide.
If the bike is fuel injected then I would be looking at getting it remapped.
If it has carbs then it needs looked at.
Has there been any Mods been done to the bike Like new exhaust or intake mods?
When it popcorns like you say on decelaration then it is a lean air/fuel mix.
The Connie is a big heavy bike and your mileage is average. Are you using premium fuel? are your tires properly inflated? Are you doing 75 or 65 on the freeway ? All these factor into good mileage....and remember some of the other guys don't know how to equate proper mileage numbers and others love to fudge their numbers just to make you feel bad.......most inline 4 cylinder bikes return mileage in the 30s...Good luck to you and enjoy your bike, it is a fine machine.....tim
IF you run a few top end runs say 4 or so you'll get about 27 mpg. If you ride 90 to 100 with an occasional blast up to 140 or so, I'm getting around 39. If you ride like the law wants you too............then I get 42. Here is a pic of a top end run with a speed recall from my speedohealer. I buried the speedo real quick. The GPS read 183.4. I had another 2 hundred rpm's to redline to go. I had to slow down for certain reasons. Of course I was on a track and never would do this on a public road...........! :shock
Real Life experiance, if you ride your bike at high speeds, even with Over Drive engaged, I end up doing about 180~200 miles per 5~5.25 gallons which breaks out to about 36~38 mpg.
Course, slowing it down to 60~65, in OT will get you another 25~35 miles per tank extra. If you need better MPG, suggest the 650 for the job, The litter is solid for rider/passenger, as the 650 is more for the rider only with added mileage clearly in the 40+mpg rating..