Leak at Velocity Stack?

• Velocity stacks
• Honda Shadow Phantom
• VT750C2B

• J

  JW

  4/21/26, 2:53 PM

  I just did the 24K service on my 2012 Shadow Phantom 750 and then took it for long rip from NorCal to Vegas! It was during the trip that I started to hear what sound like an air leak from behind the air intake. Now a little pertinent information, the bike has been "updated" or "modified" with one of TJ's fabulous Velocity stack kits a few years ago. It was installed per the fabulous directions found in YouTube channel. It also has Vance & Hines straight pipes. Anyway, I'm wondering if there is something behind the stack that could be having a problem. What could that be and what would be the troubleshooting steps? 

  Thanks in advance! 

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  TJ Admin Staff member

  4/24/26, 9:45 AM

  @JW Unfortunately "mystery sounds"  cant really be diagnosed via internet. did you install a fuel controller? 

  DO FUN SHIT!
  Check the FAQ's here for tons of tuning info and more!! - t.ly/MA6r6

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• J

  JW

  4/24/26, 9:51 AM

  @TJ Well, there was a Cobra fuel control module already installed. The velocity stack was installed afterwards. I'll see if I can post a video. 

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