Deceleration Popping
Decel pop is caused by either a too lean condition at 0% throttle or an exhaust gasket leak causing unburned exhaust gasses to combust in the pipes.
If you just got it tuned it may need some fuel added @ 0% throttle,that's if it didn't pop before the tune. Mine popped on decel so I added 5% fuel and problem solved.
If you just got it tuned it may need some fuel added @ 0% throttle,that's if it didn't pop before the tune. Mine popped on decel so I added 5% fuel and problem solved.
Tourer
Joined: Apr 2012
Posts: 325
Likes: 2
From: Texas
From the TTS Manual (this is the first thing to try) - The SERT is the earlier version and this still applies -
DE fuel is controlled by the Decel Enleanment Multiplier table, Figure 3-25. The intent of this table is to temporarily remove fuel when the throttle is closed. DE mode is terminated if the throttle is opened more than about 3 percent. Note that larger multiplier values remove more fuel, just the opposite of the AE table!
This table affects exhaust “popping” when backing off the throttle. Typically, popping occurs because the mixture is too lean. Setting the multiplier value lower will richen the mixture and may help this condition.
DE fuel is controlled by the Decel Enleanment Multiplier table, Figure 3-25. The intent of this table is to temporarily remove fuel when the throttle is closed. DE mode is terminated if the throttle is opened more than about 3 percent. Note that larger multiplier values remove more fuel, just the opposite of the AE table!
This table affects exhaust “popping” when backing off the throttle. Typically, popping occurs because the mixture is too lean. Setting the multiplier value lower will richen the mixture and may help this condition.
Last edited by TheArchitect; Jun 8, 2012 at 10:31 AM.
Tourer
Joined: Sep 2011
Posts: 456
Likes: 0
From: Upstate NY
I just put Rush Big Louie slip ons on my RK and have the stock football a/c and am getting some decel popping and backfiring. No tune at this point. Getting that done next week. Hopefully the tune will eliminate this.
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Road Warrior
Joined: Oct 2008
Posts: 1,692
Likes: 22
From: Denham Springs, La
Decel pop is caused by either a too lean condition at 0% throttle or an exhaust gasket leak causing unburned exhaust gasses to combust in the pipes.
If you just got it tuned it may need some fuel added @ 0% throttle,that's if it didn't pop before the tune. Mine popped on decel so I added 5% fuel and problem solved.
If you just got it tuned it may need some fuel added @ 0% throttle,that's if it didn't pop before the tune. Mine popped on decel so I added 5% fuel and problem solved.
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