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Old 10-05-2011, 05:52 AM
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alauhog alauhog is offline
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Default Popping on Decel

Just installed Pipes and Air Cleaner with an Auto Tuner. Donít have the money to have it put on the Dyno at this time. Plan on getting it done within a month or two.
Bike runs nice but getting a little popping on deceleration. Which way do I go with the tuner to eliminate the popping? More or less fuel on Decal to stop the popping?
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Old 10-05-2011, 06:00 AM
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Malingerer Malingerer is offline
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I would check for exhaust leaks first.This is a big cause of decel popping.Then move on to the tuner if it still persists.
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Old 10-05-2011, 06:21 AM
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Already checked and can't find any leaks on the exhaust.
The Auto tuner I have has a mode for decel. Plus or minus fuel adjustment. Just don't know which way to go. I will have it put on dyno later ( 2 months )
It's not a real bad pop and it's not all the time.
Will it hurt the bike if I ride it with the pop until I can get the dyno done
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Old 10-05-2011, 07:09 AM
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What kind of tuner is it? Can you call anyone for a little tech support.If it has a dedicated mode for decel pop.I would just play with it a little see what happens.You won't hurt anything ridding with a little decel pop.
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Old 10-05-2011, 07:20 AM
dsonnenberg dsonnenberg is offline
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I had same problem. I've got PCIII and what I did was add fuel to the "O" column on left. I first started with adding 25, rode for a bit and popping was gone. By adding that high your also using more fuel, so I slowly started decreasing that number to find my "magic" number, Next I cut the number in half and added 12, rode for a bit and my poppong returned. Now I think I have 17 in that column and no popping and Bike runs well. Hope this helps
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Old 10-05-2011, 07:27 AM
DR. V-TWIN DR. V-TWIN is offline
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More fuel. lean condition will cause it to pop on decel meaning it is not rich enough or there is not enough fuel.

Drew
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Old 10-05-2011, 08:07 AM
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Thanks Drew and everyone else for the info.
That's what I thought lean condition but not being a mechanic wanted to be sure before I started monkeying around with it.

Patriot Defender 2-1, Patriot Top Fueler, Arlen Ness Stage II Big Sucker

Went with there tunner since I have there pipes.
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Old 10-05-2011, 11:31 AM
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I get light popping on decel after my SERT and Dyno. Asked the tech about it and it is mostly due to excess fuel added in the SERT MAP. One of my goals for the SERT was a cooler running motor, so more fuel was needed for that and the Stage 1 mods I added.
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Old 10-05-2011, 12:30 PM
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The Vance & Hines FuelPak instructions with the unit tell you, if you have popping, lean out the decel mode by decreasing one number at a time to see it it helps remove popping. They warn that you may get a stalling condition when coming to a stop if you take it down too much. I believe "trade-off" is the term they used. I'm running with a SE Heavy Breather and V&H BR 2-1 with the recommended FP settings. I get a pop or two occasionally but not bad. They state it's not harmful, just annoying.
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Old 10-05-2011, 02:20 PM
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popping, gurggling, or Ka-Booms..

The first two ain't bad, the last is what I don't like. Nor are they bad for U bike if it tuning.
Air leak if so, needs fixed.
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Old 10-05-2011, 02:20 PM
 
 
 
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decel, deceleration, defender, fuel, fueler, harley, map, pak, patriot, patriotdefender21, popping, reviews, softail, top, values


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