1998 vt1100 ACE bogs down after 50% throttle.

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  981100ACE

  3/17/26, 7:57 AM

  Hello! I bought my 1998 vt1100 recently. It had an after market cobra exhaust on it with stock intake. I rebuilt the carb with your performance kit and put 198 and 50 jets in it. It idles fantastic and excels well until I open it past 50% throttle. I just bought the velocity stacks to see if its an intake issue. 

  two questions:

  Will the velocity stacks help or do I need to try different jets as well? 

  Are there any ports I need to plug or reroute when I install the velocity stacks? Or do I just toss the intake boot and slap them on? 

  Thanks in advance!

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• MS

  Michael Stallard

  4/20/26, 7:14 PM

  I have the same issue and need help fixing it. Did anything work for you?

  I installed the carb upgrades and backdraft exhaust but left the intake stock because it gets very dusty here and it's like powder consistency. I have the stacks but I'm concerned how much they actually filter (no offense TJ I'm new to this). I've tried different jets and shims but can't seem to fix the bogging issues at half throttle. 
  
  

  1995 Honda Shadow VT1100C

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  TJ Admin Staff member

  4/21/26, 9:10 AM

  @Michael Stallard you'll want to go through this tuning info so you can determine what to change to get he results you want. - t.ly/b5io7
  
  having a stock intake with open exhaust will be pretty difficult to tune. you may want to get a foam filter instead fo paper to allow amore airflow to match the exhaust. 

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

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