Author Topic: Trying to narrow down an air/fuel issue... (SOLVED! - TPS Recalibration) (Read 73142 times)

maxtog · « **Reply #20 on:** September 12, 2014, 11:28:51 PM »

Do you think it is necessary to turn the bike off and back on again after rolling the throttle twice? It seems like that step shouldn't be required (just a guess).

Son of Pappy · « **Reply #21 on:** September 12, 2014, 11:39:59 PM »

No idea Max, just seems to make sense for the ECU to remember the setting during shut down. When I am reflashing my F250 part of the procedure is to tkey off after flash, back on and start. Same holds true for the GS procedure.

Stephen.G.Fiddes · « **Reply #22 on:** September 12, 2014, 11:58:08 PM »

Quote from: SOP on September 12, 2014, 11:39:59 PM

No idea Max, just seems to make sense for the ECU to remember the setting during shut down. When I am reflashing my F250 part of the procedure is to tkey off after flash, back on and start. Same holds true for the GS procedure.

I look at it this way. When you install a program onto your computer (or God forbid, windows updates...) it needs to be shut down and re-booted to see the changes. I think that's whats happening there.

Conrad · « **Reply #23 on:** September 13, 2014, 06:40:03 AM »

Quote from: Stephen.G.Fiddes on September 12, 2014, 12:03:27 PM

UPDATE 2:

I tried so hard to kill it this morning. Did everything i knew that would cause it to die when i started. It. Kept. Running.

Throttle response is so much better, bike seems to be running smoother, my butt dyno says it has more power, and SO FAR my MPGs seem to have gone up. Very confidence inspiring having the throttle react exactly as it should.

I dont absolutely hate riding this bike anymore... Because it was not fun before constantly being scared of how it would react with every touch of the throttle. Smooth as butter now!

That's great! You know what else? Check your mirror, I think that you're actually better looking today.

Stephen.G.Fiddes · « **Reply #24 on:** September 13, 2014, 07:49:43 AM »

Quote from: Conrad on September 13, 2014, 06:40:03 AM

That's great! You know what else? Check your mirror, I think that you're actually better looking today. ;)

Dangit, now i have 7 years of bad luck.... I guess i still look goofy....

Conrad · « **Reply #25 on:** September 13, 2014, 07:58:21 AM »

Quote from: Stephen.G.Fiddes on September 13, 2014, 07:49:43 AM

Dangit, now i have 7 years of bad luck.... I guess i still look goofy....

Maybe you just need to be recalibrated? Check with your SO.

just gone · « **Reply #26 on:** September 13, 2014, 10:34:27 AM »

Quote from: SOP on September 12, 2014, 11:20:51 PM

Even a blind Kirby finds a nut now and again

You really shouldn't talk about Brian that way, he's different for sure, but he's not a nut (except mybe for that razor thing he's got goin on).

...joking aside...very well done ~~Son of~~..er... SoP!

CigarSki® · « **Reply #27 on:** September 13, 2014, 11:05:36 AM »

OK...so I saw Stephen's video out on facey books. Thought to myself, self, this seems to be the exact same issue that I am having. Being an adventurous sort; I gave it a shot.

Short story, made even shorter, the "recalibration", seems to have worked.

What it leads me to, is, when starting, as you grab the throttle, prior to pressing the starter button, would a partial throttle opening also cause it to go out of cal when starting...

CigarSki® · « **Reply #28 on:** September 13, 2014, 11:13:46 AM »

As an aside. My idle speed has dropped to 1100 rpm, down from 1300.

Stephen.G.Fiddes · « **Reply #29 on:** September 13, 2014, 11:48:39 AM »

Quote from: CigarSki® on September 13, 2014, 11:13:46 AM

As an aside. My idle speed has dropped to 1100 rpm, down from 1300.

Just adjust the idle back up... lol

CigarSki® · « **Reply #30 on:** September 13, 2014, 12:52:39 PM »

I believe that 1100 is where it should be. I bumped it up a while ago when I was having some battery problems.

maxtog · « **Reply #31 on:** September 13, 2014, 12:58:08 PM »

Quote from: CigarSki® on September 13, 2014, 11:05:36 AM

OK...so I saw Stephen's video out on facey books. Thought to myself, self, this seems to be the exact same issue that I am having. Being an adventurous sort; I gave it a shot.

Short story, made even shorter, the "recalibration", seems to have worked.

This thread is absolutely fascinating. Could be the "best kept secret ever"?

CigarSki® · « **Reply #32 on:** September 13, 2014, 01:40:24 PM »

We're not real good at keeping secrets here.

Stephen.G.Fiddes · « **Reply #33 on:** September 13, 2014, 02:46:58 PM »

Quote from: maxtog on September 13, 2014, 12:58:08 PM

This thread is absolutely fascinating. Could be the "best kept secret ever"?

Ya know, I'm actually curious if this is intended to be a secret kept, or if it's an unintended side effect in the ECU... It's not in the service manuals, From what I've heard even dealers don't do this, it's kindof strange...

jimmymac · « **Reply #34 on:** September 13, 2014, 07:41:45 PM »

Sweet news!
I'll do this next time I ride, just for S and G's.

I have never touched the throttle before starting my bike.

Conrad · « **Reply #35 on:** September 14, 2014, 08:12:54 AM »

I tried this procedure yesterday before heading out for a nice cool ride @ 42f. I can't say that I noticed any differences but I haven't had any issues with my bike and the way it runs (knocking on wood).

Stephen.G.Fiddes · « **Reply #36 on:** September 14, 2014, 08:39:49 AM »

Quote from: Conrad on September 14, 2014, 08:12:54 AM

I tried this procedure yesterday before heading out for a nice cool ride @ 42f. I can't say that I noticed any differences but I haven't had any issues with my bike and the way it runs (knocking on wood).

I've seen a couple comments that people tried it when the engine was cold and it made a small difference, then when they stopped on their ride, did it again (engine completely warm) and there was a marked improvement.

Conrad · « **Reply #37 on:** September 14, 2014, 08:58:53 AM »

Quote from: Stephen.G.Fiddes on September 14, 2014, 08:39:49 AM

I've seen a couple comments that people tried it when the engine was cold and it made a small difference, then when they stopped on their ride, did it again (engine completely warm) and there was a marked improvement.

I'll give this a try the next time I'm out and about.

Stephen.G.Fiddes · « **Reply #38 on:** September 14, 2014, 09:01:47 AM »

This is ALL experimental at this stage so if people try this, It'd be good to know the following

Were you unhappy with your throttle activity before?
Was your bike warm or cold?
Were you happy with your results/ did you notice any change?
Did you do it a second time under different conditions that made it better?

jtk1531 · « **Reply #39 on:** September 15, 2014, 06:22:51 AM »

2012 bike here...
- not exactly happy with the throttle response before. quite snatchy when rolling from a closed throttle at any speed. i thought it was because i never synched the throttle bodies (50,000+km, valve clearance done).
- (before) cold, performs very well. hot, not so well.
(after) good throttle response, engine hot or cold.
- never noticed any snatchy feel when rolling the throttle on (from closed) at any speed.
- never did the procedure a second time.

News:

Poll

Have you tried the "TPS Calibration" Procedure? What are your findings? (After you vote here, Describe your actual findings in a post, and please note the mileage you believe the issue started, and the current mileage on your bike.)

Author Topic: Trying to narrow down an air/fuel issue... (SOLVED! - TPS Recalibration) (Read 73142 times)

Son of Pappy