Question about 1999 Honda VT 1100 C3 Shadow Aero

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Backfire and popping after installing vance & hines longshots

I recently installed vanc & hines longshots along with jet kit on my 1999 Honda Shadow Aero 1100. The bike pops at low speed (rpms), seems to be running too rich, I have adjusted the air fuel mixture according to jet kit instructions but it hasn't helped. It seems to clear out at high rpms. What else can I do?

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Let me know via if you get a solution, Mine is doing similar but mine is holding back at half throttle to, Wont rev high at all just chokes under load

Posted on Oct 20, 2009

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Bet you didn't put new exhaust gaskets on. Anytime you change your exhaust or service it, you always have to put in new gaskets. your getting air in your manifold and that in turn makes it pop. I did the same upgrade to my shadow and I love it. but I had the same problem your stating to have. put new gaskets and cranked on the bolts. when you get it all dialed in your gonna love the vance and hines. I went a step ahead and removed the baffles and boy does it sound like a Harley, and mean. enjoy, hope that helped a little?

Posted on Jan 17, 2016

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It's my understanding that when you switch to a performance exhaust, you create more airflow, which actually makes the bike run LEAN. The popping you mentioned is a symptom of the lean condition. You need to increase fuel flow to compensate for the increased airflowl. This is typically achieved by adding a jet kit and higher flowing intake filter.

Posted on Dec 11, 2011

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Posted on Jan 02, 2017

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