With my TFI installed on my 09 FLHR, Set PROPERLY, running GOOD, it never got better than 40 MPG but did it Every Time out. Regardless of 1 or 2 up.
I tried for more MPG by re-adjusting the green pot (one) leaner but the best over all was where it was getting 40 MPG.
You can remove some fuel but like others have said,,,, Running Good Leave it there.
Remember, WE want the bike NOT TOO LEAN...
In order to do that, the mileage may/will go down a little.
Now on my beta Gen4, I'm able to lean it out when on the road and have gotten 47+ MPG Choosing when I run it a LITTLE lean.
On the HDT meet n greet run, morning up was cool and 14.2-4 was good setting for the Freeway ride up. It was VERY HOT out later morning, so I kept my AFR at 13.2/4 area and the bike Loved it there.
Normally running at 14.2 on the highway, it's gets the 47mpg but I'm sure it did dropped a little at the 13.2-4 setting.
SilverfoXD had his Stage one/510 cams (HD type fueler?) Dyno set at 13.1 and it sounded and ran real Good. He was out in front of me and never lagged a bit when The Tank gave it the GUSTO
anic
(just a little now and then)
MY TFI worked great and it was hard to take it off my King to Beta the gen4 but I'm liking the gen4. Some issues yet on acceleration gas coming on off idle when starting out.
(I'll use a Borrowed PC (i'm Mac) with infra-red dongle to change the program a bit)...
IF and when I put on a Gen3 (next), I will probably get no more than 42 at the Better setting for my 09 FLHR using SE255 cams and fully stage one/stock 96 yet and no head work YET...
So, I'd be happy with the 42 and have the bike run GOOD like you stated.
Just My Way :newsmile03:
signed....BUBBIE