PV: Up Shift POP and decel gurgling - Road Glide Forums
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post #1 of 38 (permalink) Old 07-22-2013, 10:44 AM Thread Starter
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PV: Up Shift POP and decel gurgling

Hey Folks,
I am looking for some PV and WinPV help/education. The bike seems to run great except for decel. Below are the conditions I am talking about. I have no experience with this but I am very willing to learn. Any help would be AWESOME!!!

I am getting a nasty pop when I am hard on the throttle and go to up shift.
On Decel I get a gurgle with minimal popping
Where do I make the changes in WinPV and do I go richer or leaner?
I can provide screen shots of tables if it will help you help me. Just let me know what you need to see.

I have checked for exhaust leaks every way I know how and came up with nothing. Even had a second set of eyes/ears (a competent friend) help me.

Smoke Test exhaust plugged using
  • cigarette
  • cigar
  • smoke pen
Listening for Leaks
  • Human Ear
  • Stethoscope tool

Manualy
  • Sprayed brake cleaner at the exhaust flanges
  • Felt for leaks with exhaust blocked

Could I still have a leak and not be able to detect it?

My Steup
2012 FLTRX
103
FM Power Vision Map
FM Intake
FM header
HD Night Stick (Supertrapp) exhaust with NO end caps


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post #2 of 38 (permalink) Old 07-22-2013, 11:30 AM
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Call FM. Have you tried auto tune yet?
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post #3 of 38 (permalink) Old 07-22-2013, 11:43 AM Thread Starter
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Quote:
Originally Posted by rg_dave View Post
Call FM. Have you tried auto tune yet?
I did call FM, they sent me a new map. I installed the new map and it still did it. I emailed Jamie again and he asked me to check cross over for leaks. I did that and re torqued it to the correct spec. I went for a super short ride it seemed to have stop. I thanked him via email but the next time I had my bike out, it was there. UGH

Maybe I just need to re check for a fifth time? Maybe I'm missing something?

Yes I ran auto tune this weekend. From what I hear it does nothing to stop these issues.

I know I can figure this out I refuse to give up LOL


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post #4 of 38 (permalink) Old 07-22-2013, 11:53 AM
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Rhino,
Are the symptoms you describe better or worse at different engine temps. For instance, is the pop on shift more likely to occur when running at full eng. temp after considerable riding time or shortly after engine warms up?


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post #5 of 38 (permalink) Old 07-22-2013, 12:02 PM
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Do more Autotune runs. Run autotune, export the tune, then load that tune and enable AT again, repeat a few times. Changes will become more subtle after a few passes.

Intentionally make the bike pop and gurgle as much as possible. You need more hits in the cell that needs attention before the changes will be applied. You can configure the hit count to a lower number, I think default is 50 hits before PV includes it. Remember when you are autotuning you are running .981/14.6 air fuel for everything below 80KPa. So some popping is likely on upshift and decel with really free flowing pipes.

What pipes and mufflers do you have? What cam? (although it looks stock or low end biased cam from your VE's)

<edit> OOPS... my reading comprehension strikes again... FM head pipe, open supertrapp...

2012 fltrx

Last edited by rageglide; 07-22-2013 at 12:04 PM.
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post #6 of 38 (permalink) Old 07-22-2013, 12:11 PM Thread Starter
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Quote:
Originally Posted by mocotom View Post
Rhino,
Are the symptoms you describe better or worse at different engine temps. For instance, is the pop on shift more likely to occur when running at full eng. temp after considerable riding time or shortly after engine warms up?
At full running temps.

I just got off the phone with Jamie at FM. Man he is a good guy. He said we will get it worked out and not to worry. I will keep you folks up to date.

But I still want to learn!!


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post #7 of 38 (permalink) Old 07-22-2013, 12:20 PM
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Keep us posted!

I've been reading everything and anything I can find out there... unfortunately most of the info available is aligned with the standard AFR/throttle position tuning. Our new bikes are using Lambda and KPa... keeping things straight has kept me scratching my head a ton...

Even reading the latest TTS user guide will give you a bunch of helpful information. Just remember that TTS has some differences in table names. For the most part, PV, SERT and TTS are populating the same tables on the ECM.

2012 fltrx
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post #8 of 38 (permalink) Old 07-22-2013, 12:22 PM Thread Starter
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Quote:
Originally Posted by rageglide View Post
Do more Autotune runs. Run autotune, export the tune, then load that tune and enable AT again, repeat a few times. Changes will become more subtle after a few passes.

Intentionally make the bike pop and gurgle as much as possible. You need more hits in the cell that needs attention before the changes will be applied. You can configure the hit count to a lower number, I think default is 50 hits before PV includes it. Remember when you are autotuning you are running .981/14.6 air fuel for everything below 80KPa. So some popping is likely on upshift and decel with really free flowing pipes.

What pipes and mufflers do you have? What cam? (although it looks stock or low end biased cam from your VE's)

<edit> OOPS... my reading comprehension strikes again... FM head pipe, open supertrapp...
Yes you are correct on the set up. Stock Cams for now FM header/FM Intake/Nightstick no end caps (supertrapp)
I will do what you said it makes scene. I will load the new tune Jamie sends me and auto tune the heck out of it. When I did the last one I had a huge amount of red cells which is good.


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post #9 of 38 (permalink) Old 07-22-2013, 12:32 PM
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I will be interested to see what changes Jamie makes to solve your problem. I would increase the acceleration enrichment by 10 percent in the 112 and 128 temp range to address the up-shift pop. Then test ride to check for improvement.


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post #10 of 38 (permalink) Old 07-22-2013, 03:01 PM Thread Starter
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Quote:
Originally Posted by mocotom View Post
I will be interested to see what changes Jamie makes to solve your problem. I would increase the acceleration enrichment by 10 percent in the 112 and 128 temp range to address the up-shift pop. Then test ride to check for improvement.
I will post the tables when I get them back if they solve the issue.

Again Thanks for all your help guys!


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