Dobeck TFI Settings

[nomad921]

I have an 08 1600 and have on it the following: V & H Dual baggers, K & N filter and coasters. Does anyone have any idea what the pot settings should be? I would like to at least get a ball park to start in before the final tweaking. Thanks much

[Peg]

Originally Posted by macmac

The way I do these is install the unit, start the engine and run it to full warmed up, maybe ride it to get there with all pots OFF.

Once the engine is at full warm depending on the day and the temp I might run a box fan at at the rad/engine to keep it cool enough.

Then set pot 4 to 9:00 which is the RPM counter.

Then turn pot 1 slowly clock wise listening to RPM, unless you have a tach, in which case watch that looking for the highest RPM, and pass it for a lesser RPM for sure.

Then rev the throttle a little bit to clear the engine of idle excess fuel and slowly turn pot 1 back towards counter clockwise again seeking the highest RPM.

Pass that to leaner and again refine pot 1 moving the dial clockwise seeking best RPM.

(If the best RPM is getting too high and sort of above any reasonable idle speed RPM turn the stock black know on the right side counter clockwise slowly! By pulling back sharply on the knob and turning it. These tend to turn hard and you need to pull on them to engage the 2 lugs.)

IF you needed to do that above do it and again refine pot 1 for best RPM.

Once you find best RPM (fastest) with in reason if the black knob was involved or not, then set the pot screw slot ahead by 2 dots between numbers (richer). That won't change RPM in any way you can see on a tach or hear.


Then go for a nice ride and see how just the setting of pot 1 has changed the way the engine runs.

'IF' idle comes up and or if in downshifting the bike feels like it won't engine brake, turn down the black knob more and refine pot 1 again.

When pot 1 is all happy, and you can use a track, air port runway or a out in the boonies road where you won't get a ticket from the cops you can mess about with pot 2 best.

The only time pot 2 works is when you are twisting the wick hard. This pot will want you just buggin' out and goin' like a demon... So all that happens here is guessing unless you have access to a Dyno.

You will be in only 2nd or 3rd gear and trying to decide if you have more or less power between whole numbers. i would set it to either 3 right off and work to 6 or start at 6 and work down seeking best power and speed.

This is that place in life where everything other people, usually yer parents said something about all yer brains being in yer butt that makes them perfectly correct, because by the seat of your pants you must be able to tell what feels like the best power.

The stock ECU does what pot 3 does well and you should leave it off.

If pot 4 doesn't blink you haven't hooked up the TFI correctly when it is set to 9 and it should blink down to around 4. For the TFI to work Pot 4 must be blinking red and must be at 4 to 9

I've found that post (often repeated in short form as up there in this thread) from Mac to be the definitive guide for dialling in a Dobeck TFI. It really should be pinned somewhere for posterity... although he's repeated it so often that most searches find it.