Dobeck Performance "tfi-1025" Efi Tuner For The Tdm900

[azza68]

<!--quoteo(post=251663:date=Thu 6th Sep 2012, 19:58 PM:name=Phil McLaughlin)-->QUOTE(Phil McLaughlin @ Thu 6th Sep 2012, 19:58 PM) <{POST_SNAPBACK}><!--quotec-->AzzA what has the impact on fuel economy been ?

cheers<!--QuoteEnd--><!--QuoteEEnd-->

Hard to tell at this stage; I was going to refill today (had the day off work) but it was bloody horrible out, so I stayed inside like a pussy.

When the thing was set up with the O2 sensor active, the fuel economy was much on par with other 900's. It only really took a hit when I loaded up and clipped on the panniers; those feckers make a lot of down-force, enough to shove the arse end sideways on big sweepers... it's brutal on tyres too.

5L/100km was average, best was about 4.1L/100km, worst was 7.7L/100km (with hillbilly-mixed fuel, stiff headwinds, and speeds I wont comment on).

I then changed the final gearing to be lower, without correcting the speedo/odo', and it was then using as much or less than the Mrs's NT700V when we went out together... I will tend to ride ahead while she plays catchup, like the tortoise and hare. [img]style_emoticons/<#EMO_DIR#>/smile.gif[/img]

I've now corrected the speedo and have since removed the O2 sensor, so will have to reassess the average and apply corrections so as to present the result in the same light as that from a stock bike... if you follow me.

One thing that most people seem to overlook is, the TDM900 odometer returns a reading that is 5-7% positive in error... so your "fuel refill to mileage" ratios are somewhat <i>optimistic</i>. A lot of modern bikes seem to share about the same error margin.

I did the latest mods after a few months laid-up, while I rode my other bike, so the fuel was bad when I first tuned it... I've since drained the tank and refilled... the new fuel saw a substantial jump in idle RPM! That's how bad the old fuel was, after only a few months. So I've since retuned it, but only have about 150kms on the clock since... it's showing about two thirds full on the meter, which is about normal (my fuel indicator has never been linear; the top half tank seems to vaporise before the bike runs on fumes forever).

I expect it will use a little more than it did before; my bike was so lean it was to the detriment of the ride... but if I'm now getting 350-430km per tank, on mixed cycle, I will be more than happy.