Popping on Decel
Road Master
Joined: Sep 2015
Posts: 795
Likes: 75
From: Kane County IL
Sorry to be responding to an old thread but many who may have the same question might be reading this thread for the first time.
The Dyno-Jet PV-2 website has this to say:
Deceleration or shift popping:
"To address decel or shift popping, use the built in Power Vision feature Quick Tune. Start by adding fuel (+5), and spark (+3) in the decel columns, and then test. Adjust further if needed"
I don't know but thinking these guys probably know what they are talking about.
The Dyno-Jet PV-2 website has this to say:
Deceleration or shift popping:
"To address decel or shift popping, use the built in Power Vision feature Quick Tune. Start by adding fuel (+5), and spark (+3) in the decel columns, and then test. Adjust further if needed"
I don't know but thinking these guys probably know what they are talking about.
Stellar HDF Member
Joined: Mar 2006
Posts: 2,395
Likes: 153
From: Utah
Sorry to be responding to an old thread but many who may have the same question might be reading this thread for the first time.
The Dyno-Jet PV-2 website has this to say:
Deceleration or shift popping:
"To address decel or shift popping, use the built in Power Vision feature Quick Tune. Start by adding fuel (+5), and spark (+3) in the decel columns, and then test. Adjust further if needed"
I don't know but thinking these guys probably know what they are talking about.
The Dyno-Jet PV-2 website has this to say:
Deceleration or shift popping:
"To address decel or shift popping, use the built in Power Vision feature Quick Tune. Start by adding fuel (+5), and spark (+3) in the decel columns, and then test. Adjust further if needed"
I don't know but thinking these guys probably know what they are talking about.
I had a power commander and to get mine to work without dumping fuel all the time I got a TMax... which at the time allowed me to make the adjustments in the right places.
Road Master
Joined: Aug 2012
Posts: 1,086
Likes: 5
From: London, UK
I've had good success on several bikes by auto/smarttuning to get the VE table correct, then setting the AFR to stoich and (if necessary) advancing the timing a little. There's no load under these conditions, so no danger of damage from pinging. I just can't understand the logic behind dealing with excess unburnt gas by adding MORE gas.
It's a shame you can't push the ECM out of closed loop at high AFRs. Because without the EGR table (or equivalent), you can't account for reversion, which is what pushes the the VEs (and the adaptive fuel values) up in this region and causes the additional of extra fuel.
It's a shame you can't push the ECM out of closed loop at high AFRs. Because without the EGR table (or equivalent), you can't account for reversion, which is what pushes the the VEs (and the adaptive fuel values) up in this region and causes the additional of extra fuel.
Ultimate HDF Member
Joined: Jul 2014
Posts: 5,649
Likes: 430
From: MASS_hole
I've had good success on several bikes by auto/smarttuning to get the VE table correct, then setting the AFR to stoich and (if necessary) advancing the timing a little. There's no load under these conditions, so no danger of damage from pinging. I just can't understand the logic behind dealing with excess unburnt gas by adding MORE gas.
It's a shame you can't push the ECM out of closed loop at high AFRs. Because without the EGR table (or equivalent), you can't account for reversion, which is what pushes the the VEs (and the adaptive fuel values) up in this region and causes the additional of extra fuel.
It's a shame you can't push the ECM out of closed loop at high AFRs. Because without the EGR table (or equivalent), you can't account for reversion, which is what pushes the the VEs (and the adaptive fuel values) up in this region and causes the additional of extra fuel.
Tourer
Joined: May 2010
Posts: 299
Likes: 2
I would think some tuners would have DFCO (decel fuel cut off). For this to work, it cuts fuel at a certain MAP vs RPM and introduces fuel once another condition is met.
Last edited by cjbmustang; Sep 14, 2015 at 08:11 PM.
Cruiser
Joined: Jul 2012
Posts: 120
Likes: 12
From: Northern VA
This is exactly what you need to cure the decel pop... not more fuel. Adding more fuel is a wasteful work around.
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
Stellar HDF Member
Joined: Mar 2006
Posts: 2,395
Likes: 153
From: Utah
I've had good success on several bikes by auto/smarttuning to get the VE table correct, then setting the AFR to stoich and (if necessary) advancing the timing a little. There's no load under these conditions, so no danger of damage from pinging. I just can't understand the logic behind dealing with excess unburnt gas by adding MORE gas.
Thread
Thread Starter
Forum
Replies
Last Post
