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#Decelerate with a little brake and stop backfire how to
#Decelerate with a little brake and stop backfire install

You can eliminate decel popping by adding aprox 5% fuel at 0% throttle between the RPM range of 1,500 and 3,500 RPM. We would suggest tuning with a Power Commander, or Vance & Hines FP3. Yes, this would definitely improve your performance.

Customer Service Techs September 9th, 2015.

#Decelerate with a little brake and stop backfire install

My question is if I install the heavy breather intake from screamin eagle and upgrade the fuel map would that improve the performance and get rid of the popping on decel/downshifting?Īny suggestions would be appreciated. On decel or downshifting I get a lot of popping from the exhaust. Δ 39 Responses to “Causes and Cures for Popping on Deceleration” Mail (required) (will not be published).Make Sure to Watch All EFI Mapping videos in Our Upgrade Categories.

#Decelerate with a little brake and stop backfire how to

How to Install Exhaust Gasket on a Motorcycle.

Twin Cam Harley Intake Seals Replacement.

Check Out Our Related Videos for More Information: Also make sure that you synch the Throttle Position so that it reads 0 while the bike is idling. Some Magnetti Marelli bikes responded by having a -60 put in this column while most Delphi bikes respond by inputting a +25. The value you enter depends on your model and setup. If you are using a PCIII then go into the 0% column of the software and alter the fuel curve from 1750-5500rpm. If all that checks out then you can alter the fuel curve at closed throttle to help this problem. To REDUCE (it may not totally go away) popping on deceleration first make sure that you do not have any intake or exhaust leaks.

This fresh air makes the exhaust hotter (think of letting a fire have more oxygen) which aids in the combustion of the unburnt fuel. It is not only much quieter but also does not allow the fresh air to enter the exhaust due to reversion.

The reason you do not hear this on a bike with a stock exhaust is due to the baffling of the stock exhaust. Popping on deceleration is due to unburnt fuel being ignited in the exhaust. Articles on Harley-Davidson How-to and More