Back Firing Vs. Decel Pop
#1
Back Firing Vs. Decel Pop
I have just installed a new Khrome Werks dragstyle exhaust (with baffles) on my bike, and a K&N high flow air filter. I have NOT installed a tuner but I am considering buy a power vision.
It was about -3degC today when I finished the install and fired the bike up. I didnt ride but I tested it in the garage. On decel at higher RPMs I seem to get a backfire every time. This included an orange flame shooting out of the pipe. I expected some decel pop but not back firing to that extend. Is this normal without a tune? Will a tune fix this, or do you suspect there is something else going on. Bike ran fine with the stock exhaust and air filter.
This is on a 2015 Wide Glide
Thanks,
It was about -3degC today when I finished the install and fired the bike up. I didnt ride but I tested it in the garage. On decel at higher RPMs I seem to get a backfire every time. This included an orange flame shooting out of the pipe. I expected some decel pop but not back firing to that extend. Is this normal without a tune? Will a tune fix this, or do you suspect there is something else going on. Bike ran fine with the stock exhaust and air filter.
This is on a 2015 Wide Glide
Thanks,
#2
#3
I have just installed a new Khrome Werks dragstyle exhaust (with baffles) on my bike, and a K&N high flow air filter. I have NOT installed a tuner but I am considering buy a power vision.
It was about -3degC today when I finished the install and fired the bike up. I didnt ride but I tested it in the garage. On decel at higher RPMs I seem to get a backfire every time. This included an orange flame shooting out of the pipe. I expected some decel pop but not back firing to that extend. Is this normal without a tune? Will a tune fix this, or do you suspect there is something else going on. Bike ran fine with the stock exhaust and air filter.
This is on a 2015 Wide Glide
Thanks,
It was about -3degC today when I finished the install and fired the bike up. I didnt ride but I tested it in the garage. On decel at higher RPMs I seem to get a backfire every time. This included an orange flame shooting out of the pipe. I expected some decel pop but not back firing to that extend. Is this normal without a tune? Will a tune fix this, or do you suspect there is something else going on. Bike ran fine with the stock exhaust and air filter.
This is on a 2015 Wide Glide
Thanks,
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BiggCliff412 (04-17-2018)
#4
#6
Considering? You need to go ahead and get the Powervision and get it tuned for the intake and exhaust.
Also those short pipes aren't helping the cause with popping and flames since they're shorter and much less restricted than the factory pipes, any unburnt fuel in the exhaust gases will ignite when it hits oxygen a the end of the pipe since it hasnt had enough time to cool via a long exhaust tract. I had Vance & Hines short ***** for a short period of time on my bike and even after being tuned, and occasionally during aggressive downshifts and engine braking or WOT runs and the fastest shifts I could make they would throw a flame other riders told me.
Also those short pipes aren't helping the cause with popping and flames since they're shorter and much less restricted than the factory pipes, any unburnt fuel in the exhaust gases will ignite when it hits oxygen a the end of the pipe since it hasnt had enough time to cool via a long exhaust tract. I had Vance & Hines short ***** for a short period of time on my bike and even after being tuned, and occasionally during aggressive downshifts and engine braking or WOT runs and the fastest shifts I could make they would throw a flame other riders told me.
Last edited by 2500hdon37s; 04-15-2018 at 08:44 PM.
#7
Considering? You need to go ahead and get the Powervision and get it tuned for the intake and exhaust.
Also those short pipes aren't helping the cause with popping and flames since they're shorter and much less restricted than the factory pipes, any unburnt fuel in the exhaust gases will ignite when it hits oxygen a the end of the pipe since it hasnt had enough time to cool via a long exhaust tract. I had Vance & Hines short ***** for a short period of time on my bike and even after being tuned, and occasionally during aggressive downshifts and engine braking or WOT runs and the fastest shifts I could make they would throw a flame other riders told me.
Also those short pipes aren't helping the cause with popping and flames since they're shorter and much less restricted than the factory pipes, any unburnt fuel in the exhaust gases will ignite when it hits oxygen a the end of the pipe since it hasnt had enough time to cool via a long exhaust tract. I had Vance & Hines short ***** for a short period of time on my bike and even after being tuned, and occasionally during aggressive downshifts and engine braking or WOT runs and the fastest shifts I could make they would throw a flame other riders told me.
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#8
http://www.*****************/forums/...rich-lean.html
I did think. I still think it's too lean at idle.
edit: it's vtwinforum.com. I don't know why we can't post links to other forums. Regardless, popping on decel is almost always caused by a lean condition.
I did think. I still think it's too lean at idle.
edit: it's vtwinforum.com. I don't know why we can't post links to other forums. Regardless, popping on decel is almost always caused by a lean condition.
Last edited by dorri732; 04-16-2018 at 07:08 AM.
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Solina_Steve (04-16-2018)
#9
http://www.*****************/forums/...rich-lean.html
I did think. I still think it's too lean at idle.
edit: it's vtwinforum.com. I don't know why we can't post links to other forums. Regardless, popping on decel is almost always caused by a lean condition.
I did think. I still think it's too lean at idle.
edit: it's vtwinforum.com. I don't know why we can't post links to other forums. Regardless, popping on decel is almost always caused by a lean condition.
#10
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http://www.*****************/forums/...rich-lean.html
I did think. I still think it's too lean at idle.
edit: it's vtwinforum.com. I don't know why we can't post links to other forums. Regardless, popping on decel is almost always caused by a lean condition.
I did think. I still think it's too lean at idle.
edit: it's vtwinforum.com. I don't know why we can't post links to other forums. Regardless, popping on decel is almost always caused by a lean condition.
Both views have their own logic and perhaps one day I'll know enough to figure out which is correct. My own bike has quite of lot of popping on deceleration too.