Yamaha R3 Forums banner

Popping experience with slip on

753 Views 10 Replies 8 Participants Last post by  cornerslider
Hi, Im new member and Im writing here for some questions about my little r3. Since I changed the stock air filter with a bmc one (not race) and since I put the arrow pro race slip on, I heard some popping sound during my ride. It's not the classic popping sound while decelerating because when I completely closed the throttle, I didn't hear nothing. The popping sounds arrive when I reopen the throttle partially (5/10%). It's like unburned fuel from the previous acceleration. If the bike would running lean I think that the popping sounds would be while decelerating but with throttle completely close. It could be the pair system with fresh air that cause all this situation? Or is it simply unburned fuel? Thanks to all and sorry for my bad english🥴
1 - 1 of 11 Posts
Not sure why it's not widely known, but when you make any, even small adjustment to a motor and the exhaust is an integral part, you change performance characteristics and not only the exhaust note.

When a motor decelerates the ecu is programed to burn off unspent fuel at that instant due to emissions. So when you alter the exhaust you have results not intended by the stock ecu and stock piping.

That's why some tunes for cars and bikes dump more fuel at that juncture to induce more of the crackle n pop.

It's just as much a fad with exotic super cars that you canswitch on the fly.
  • Helpful
  • Like
Reactions: 3
1 - 1 of 11 Posts