Does the popping ever completely stop?
Road Captain
Joined: Apr 2010
Posts: 709
Likes: 1
From: Maine
Just got my king back from the dyno shop on Friday. I had excessive popping on decel. I am sure I had some leaks in the exhaust which added to it.
After dyno, I am up to 77 hp with 83 torque. I have some popping still, but very minimal compared with before. A buddy is coming over later today to use my lift on his Honda. While he is working on that, I'll hook my laptop up to my PCIII and look at the map.
I thought adding fuel at the zero throttle mark will increase your idle. Am I wrong in that thought?
If it does increase idle, what can I do to reset idle to a slower rpm while maintaining the richer mixture?
After dyno, I am up to 77 hp with 83 torque. I have some popping still, but very minimal compared with before. A buddy is coming over later today to use my lift on his Honda. While he is working on that, I'll hook my laptop up to my PCIII and look at the map.
I thought adding fuel at the zero throttle mark will increase your idle. Am I wrong in that thought?
If it does increase idle, what can I do to reset idle to a slower rpm while maintaining the richer mixture?
Supporter
Joined: Mar 2008
Posts: 4,419
Likes: 90
From: Vermont
"Decel popping," as it's usually called, is a usually unappreciated popping sound made when you roll-off the throttle to decelerate. If you have a PC or other tuner that can adjust fuel at 0% TP you can usually dial the popping out completely by adding fuel to that area of the map. I've never had a problem with this for some reason and have my 0% column set rather lean, at -10 when I had the PCV installed. Others get the popping and you should add five at a time to the value until it is gone. Sometimes a leaky muffler joint can cause this, so make sure your clamp is tight and you aren't getting any leakage. Don't over-torque, as 60 lb/ft is the spec.
James is right that more fuel means it will negatively affect mileage, which is why I keep mine as lean as possible.
James is right that more fuel means it will negatively affect mileage, which is why I keep mine as lean as possible.
Last edited by Rickr01; Jul 6, 2011 at 01:15 PM.
Intermediate
Joined: Jan 2006
Posts: 36
Likes: 0
Popping on decel is somewhat normal @ 2000 rpm and under. It is caused by the ecm leaning the mixture. I suppose you can get rid of it by going with an aftermarket tuner, which I don't have. I run the SE tuner, Vance and Hines slip-ons, 07 FLHTCU, 8 hours dino time and 46 MPG one up. I happy with it.
Elite HDF Member
Joined: Apr 2006
Posts: 3,948
Likes: 54
From: The Burgh
I added 15% at 0% throttle between 1,250 rpm and 4,000 rpm in my PC-V tables (both cylinders) and I completely eliminated the popping I had. Like iClick suggested, go by increments of 5% until the popping disappears.
I haven't noticed any difference in terms of mpg. The big difference I noticed since I modified the tables is the price per gallon, not the miles per gallon.
I haven't noticed any difference in terms of mpg. The big difference I noticed since I modified the tables is the price per gallon, not the miles per gallon.
Thread
Thread Starter
Forum
Replies
Last Post
lionsqrne
Ignition/Tuner/ECM/Fuel Injection
2
Sep 18, 2008 02:12 PM
notarheli
Ignition/Tuner/ECM/Fuel Injection
8
Nov 19, 2006 03:16 AM
adding, adjustment, decel, deceleration, fuel, harley, king, pipes, popping, road, rolling, stand, stop, thunder, thundercone, thundercones
