Power Vision Information Thread
i read its normal but thought id ask, why when you run auto tune the bike runs very poor(running AUTO TUNE BASIC), theres not much power, and i get alot of backfire (is this normal) when i finish auto tune i run a code check, i notice that both o2 sensors have codes of rich , i dont think ive read of people auto tuning and setting these codes that would probably be why it would be backfiring ?
when i load the auto tune i also clear the o2 codes, the bike runs great with the auto tune loaded and no backfiring at all, im just worried about the rich o2 sensor codes (so far it only happens when im tuning)
when i load the auto tune i also clear the o2 codes, the bike runs great with the auto tune loaded and no backfiring at all, im just worried about the rich o2 sensor codes (so far it only happens when im tuning)
Last edited by gant; Jun 19, 2015 at 02:27 AM.
Extreme HDF Member
Joined: Nov 2007
Posts: 14,670
Likes: 139
From: East of the Sun, West of the Moon
JustDennis originally posted this a while back.
Grand HDF Member
Joined: Dec 2014
Posts: 4,890
Likes: 553
From: USA
http://www.dynojet.com/powervision/p...on-videos.aspx
Stellar HDF Member
Joined: Jun 2007
Posts: 2,928
Likes: 118
From: Ashby, Ma
i read its normal but thought id ask, why when you run auto tune the bike runs very poor(running AUTO TUNE BASIC), theres not much power, and i get alot of backfire (is this normal) when i finish auto tune i run a code check, i notice that both o2 sensors have codes of rich , i dont think ive read of people auto tuning and setting these codes that would probably be why it would be backfiring ?
when i load the auto tune i also clear the o2 codes, the bike runs great with the auto tune loaded and no backfiring at all, im just worried about the rich o2 sensor codes (so far it only happens when im tuning)
when i load the auto tune i also clear the o2 codes, the bike runs great with the auto tune loaded and no backfiring at all, im just worried about the rich o2 sensor codes (so far it only happens when im tuning)
Once you've done this hopefully your rich 02 sensors codes go away. If not it's time to start a bit of troubleshooting. Where did you get the base tune you are starting with? You should also understand that the bike won't run perfect when doing ATs, simply because AT Basic sets all cells to 14.6 (because that's where stock sensors work the best) and then retards your timing by 4 degrees (for safety purposes) so as to not hurt the engine.
I see you've been doing some mods to your bike, so you'll need a base map that should take your mods into account.
Last edited by oldhippie; Jun 19, 2015 at 09:15 PM.
This is DURING the auto tune process is where I'm backfiring I read that the bike does run pretty bad while In auto tune I email Jaimie and told him DURING autotunr I get back fire and he said it's normal because of just the things you stated retard timing etc
After I finish my auto tune run and load it in everything is fine and no backfire or codes . I'm just worried that during Autotune I get codes. Jaimie told me autotuning could cause history codes
After I finish my auto tune run and load it in everything is fine and no backfire or codes . I'm just worried that during Autotune I get codes. Jaimie told me autotuning could cause history codes
Getting codes and running with a lot of back fires isn't normal. Run Autotune a few times iteratively, save each tune and compare with the next one, and you should get to all cells you're hitting getting to within 5% of the previous.
Once you've done this hopefully your rich 02 sensors codes go away. If not it's time to start a big of troubleshooting. Where did you get the base tune you are starting with? You should also understand that the bike won't run perfect when doing ATs, simply because AT Basic sets all cells to 14.6 (because that's where stock sensors work the best) and then retards your timing by 4 degrees (for safety purposes) so as to not hurt the engine.
I see you've been doing some mods to your bike, so you'll need a base map that should take your mods into account.
Once you've done this hopefully your rich 02 sensors codes go away. If not it's time to start a big of troubleshooting. Where did you get the base tune you are starting with? You should also understand that the bike won't run perfect when doing ATs, simply because AT Basic sets all cells to 14.6 (because that's where stock sensors work the best) and then retards your timing by 4 degrees (for safety purposes) so as to not hurt the engine.
I see you've been doing some mods to your bike, so you'll need a base map that should take your mods into account.
Last edited by gant; Jun 19, 2015 at 05:22 PM.
Stellar HDF Member
Joined: Jun 2007
Posts: 2,928
Likes: 118
From: Ashby, Ma
This is DURING the auto tune process is where I'm backfiring I read that the bike does run pretty bad while In auto tune I email Jaimie and told him DURING autotunr I get back fire and he said it's normal because of just the things you stated retard timing etc
After I finish my auto tune run and load it in everything is fine and no backfire or codes . I'm just worried that during Autotune I get codes. Jaimie told me autotuning could cause history codes
After I finish my auto tune run and load it in everything is fine and no backfire or codes . I'm just worried that during Autotune I get codes. Jaimie told me autotuning could cause history codes
what kind of 2-into-1 pipe is that?
Last edited by oldhippie; Jun 19, 2015 at 09:23 PM.
Fast thoughts has popping
Need your advise when my bike sometime has popping when get fast thought. Thanks for any input.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
6 Weirdest Harley-Davidsons Ever Sold to the Public
Verdad Gallardo
7 Times Harley-Davidson Chucked Tradition Out the Window
Verdad Gallardo
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
Grand HDF Member
Joined: Dec 2014
Posts: 4,890
Likes: 553
From: USA
It would just help understand the issues you are having with your bike.
Road Master
Joined: Dec 2012
Posts: 848
Likes: 30
From: CO
Hey guys, I noticed something strange today while I had the PV connected and was just monitoring my spark advance while riding. I have my advance set to 20 at idle. When CHT reaches around 270 while sitting in traffic, the ECU increases the idle advance to 28. That's +8 advance. I have never noticed this behavior before and it's not part of any cooling strategy I've ever heard of since more timing would tend to increase temp, not decrease. I have EITMS disabled and idle spark control turned off as well. Does anyone know a reason for this?