Hello All,

After having my 2012 SuperLow since November 2011, have finally been able to get it upgraded with a stage 1 kit   -  Screamin Eagle air cleaner and shorty slip on mufflers.  My bike had just covered 36,000km and over this time had an average of 22.82km/ltr or 4.38 ltr per 100 km.  In the two weeks since having the kit installed I've noticed it running rough.  I took it back to the dealer and the mechanic took it for a ride and returned saying he could not find any problems.  My first two tank fills have returned the horrible figures of 18.11km/ltr or 5.52ltr per 100 km.  Is this what I should expect or is there some more tuning to be done with the SE Pro Supertuner.

Thanks,  Michael

MY 2012 Street Glide fully loaded on cruise does about the same. It weighs close to 500kg loaded 2 up so would think you should get better than me.

It's more than likely the tuner, I had the stage 1 done on my 2014 iron a month or so after I picked it up, it ran like dog shit, would misfire when it was cold, chewed fuel and even had the gear indicator disappear off my speedo, turns out it was the tune... They just dump a flash tune on and leave it at that and hope for the best, not the best way to do things but that's what they do! They put a new tune on and it's a lot better now but I'm looking at the latest model fuel pak and a proper dyno tune soon I think

sorry bout the DP

Thanks a lot fellers. Will let you know how things pan out.

Sorry it has taken so long to get back on this. In the end I took the bike back to the dealer another two times.  The first time they fixed the rough riding at low speeds but the fuel usage was still high (180km before the fuel light came on).  The next time the mechanic lowered the fuel/air ratio overall by 5%  and have since been getting 250km/260km before fuel light comes on. He warned that it couldn't be reduced further as the engine would run too hot.  Am really happy with this result as it puts me back with fuel usage I had before the stage 1 kit .

 

It's a really good idea to get i onto a dyno with someone who knows their stuff, after putting on my stage 1 kit onto my 48 it was running like an absolute pig, after the dyne I was getting an extra 17HP and running beautifully. I now get around 3.8l per 100k with no dead spots or spluttering or popping at all. Dean at thundertech in WA is an absolute champion!

Wow, Bandageboy, I thought aiming for 4.4ltr/100km was some goal, but your figures are pretty awesome.  Thanks for sharing.

If you're up for it, get a Mastertune kit and learn to tune your bike your own way. It's not a very complicated system. Will save you $$ over time as you're not paying for dyno time. Just have to take your bike through many riding conditions.

It looks a headache at first but it is very easy to use once you get the hang of it. The manual they have written for the tuning system is excellent. Everything is explained well.

I have a 2011 superlow and it was a dog of a bike when i first bought it. It's a pocket rocket now.

I think the OP is a bit too obsessed with fuel economy rather than what's best for the engine. Compared to a stock engine your going to need more fuel to reduce leaness.
Take the bike and get it properly tuned (by the sound of things the original re flashes made it way too rich, and I woukd be concerned your now too lean again). Then again get it's not my ride...

Thanks for the suggestion , fizzicist. Already have the SE tuner, software and cables, but am happy with how tgings are at present.

As I do at least one interstate trip a year through "rural/outback" Oz, Tussuck, I often find that fuel outlets are between 270km and 300km apart.  if the fuel light comes on at 180km there is no way that I'm gonna make it to the next fill and pushing a Harley, even a small Sportster is a bit of a task, not to mention a bloody dampner on the trip.  Having the fuel light come on around 260km gives me a good chance of getting to fuel without having to push  ;o)  Yes, I ride, but I want to get there too.  I don't think that's obsessing, is it?

If it's easy to start, hot or cold and it's not getting too hot when running, if you are happy with the performance and the ltrs per km. Well done.
If you decide to change anything, do one thing at a time. IF it gets better good but if not change it back. then you know you are heading in the correct direction.