Forum Main Tech Help/Race Shop 2019 KTM 450 SXF popping on decel

2019 KTM 450 SXF popping on decel

Related:
Edit Tags Done
Create New Tag
Edit Tags Done

atrdrvr7

Vital MX member atrdrvr7 37183 atrdrvr7 https://p.vitalmx.com/photos/users/37183/avatar/c50_KC_RideOn_Web3_1481741642.jpg?1481740764 https://www.vitalmx.com/community/atrdrvr7,37183/all 01/15/13 80 212 44 3

Posts: 292

Joined: 1/15/2013

Location: Houston, TX USA

7/21/2018 8:35 AM
Edited Date/Time: 7/21/2018 8:36 AM

Just picked up a fresh one a few days ago. Took it out for a ride yesterday. Went through the normal break in procedures. The bike was popping on decel the whole day. Pretty annoying to say the least.

Checked the exhaust over for leaks and found none. Also noticed the spark arrestor screen in the silencer has a hole blown through it after riding. I have the TPS tool that I used on my 16'. Is the setting the same for adjustment .60-.64 for the sweet spot? Any other ideas? Thanks

|

kb228

Vital MX member kb228 61852 kb228 https://p.vitalmx.com/photos/users/61852/avatar/c50_48AD01BA_8BE7_43D5_B767_B4A5D12AFA64_1538263085.jpg?1538262140 https://www.vitalmx.com/community/kb228,61852/all 01/31/18 3 74 5722 1

Posts: 5800

Joined: 1/31/2018

Location: Mansfield, OH USA

7/21/2018 8:43 AM

If the bike has a new ecu and mapping the voltage is likely different. Look up a 19 service manual and see. Im putting my bets on the voltage being different and youre still off. I doubt you have an exhaust leak on a new bike.

|

blaze 57

Vital MX member blaze 57 63102 blaze 57 https://p.vitalmx.com/photos/users/63102/avatar/c50_133243447_1124428091352369_6470981084135266732_n_1623971912.jpg?1623971214 https://www.vitalmx.com/community/blaze-57,63102/all 04/11/18 25 278 1

Posts: 303

Joined: 4/11/2018

Location: Inchelium, WA USA

7/21/2018 4:29 PM

I remember someone else reported popping on their new Factory Editions 450's when they came out last Spring. My TPS on my new 450 FE was only .49 when I checked it. Bumped it to .60 but I never had any popping to begin with. I ended up sending my ECU to Tokyo Mods for a re-flash along with the FMF full exhaust. Big differance.

|

atrdrvr7

Vital MX member atrdrvr7 37183 atrdrvr7 https://p.vitalmx.com/photos/users/37183/avatar/c50_KC_RideOn_Web3_1481741642.jpg?1481740764 https://www.vitalmx.com/community/atrdrvr7,37183/all 01/15/13 80 212 44 3

Posts: 292

Joined: 1/15/2013

Location: Houston, TX USA

7/21/2018 5:22 PM

blaze 57 wrote:

I remember someone else reported popping on their new Factory Editions 450's when they came out last Spring. My TPS on my new ...more

...more

Thanks. Im going to run it up to .60 and see if it fixes the popping.

|

mx317

Vital MX member mx317 3927 mx317 https://p.vitalmx.com/photos/users/3927/avatar/c50_252_1593011107.jpg?1593010532 https://www.vitalmx.com/community/mx317,3927/all 04/01/08 5 https://www.vitalmx.com/community/mx317,3927/setup 73 3718 9

Posts: 3791

Joined: 4/1/2008

Location: TN, USA

7/21/2018 7:45 PM

Spark arrestor?

|

Take it to the limit, one more time!

blaze 57

Vital MX member blaze 57 63102 blaze 57 https://p.vitalmx.com/photos/users/63102/avatar/c50_133243447_1124428091352369_6470981084135266732_n_1623971912.jpg?1623971214 https://www.vitalmx.com/community/blaze-57,63102/all 04/11/18 25 278 1

Posts: 303

Joined: 4/11/2018

Location: Inchelium, WA USA

7/21/2018 9:17 PM

mx317 wrote:

Spark arrestor?

...more

I think they are just some kind of funky screen. The screen mesh may not be fine enough to pass forestry approval.

|

sgrimmxdad

Vital MX member sgrimmxdad 39808 sgrimmxdad https://p.vitalmx.com/photos/users/39808/avatar/c50_tagupclose_1574854917.jpg?1574854894 https://www.vitalmx.com/community/sgrimmxdad,39808/all 07/23/13 3 75 1217 19 3

Posts: 1292

Joined: 7/23/2013

Location: Farmville, NC USA

7/22/2018 1:54 AM

We had to adjust our TPS to get rid of the popping on our 18 FE! Was at around 52 and we went to 60. Just added the FMF and went to 62!

|

2020 YZ450F
2018 KTM 450SXF FE
2016 YZ250F 2008 CRF450R
2015 YZ250F 2008 CRF250R
2001 CR250R
2010 YZ250 2012 CRF150R
2009 YZ125 2010 KX109.5
SSR Motorsports Dealer YCF Motorcycles
TAGMX Suspension & Graphics! www.tagmxsuspension.com https://www.liquidskinzdesign.com/



Forum Main Tech Help/Race Shop 2019 KTM 450 SXF popping on decel

The Latest