Exhaust performance. | Victory Motorcycles: Motorcycle Forums

Exhaust performance.

Discussion in 'Tech Q&A' started by James2003x, Apr 5, 2021.

  1. James2003x

    James2003x Active Member

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    I know everyone raves on the Thor.
    However I’m wanting the RPW Bad Boy or the RPW slash.

    from those two anyone have any dyno runs with cams and torque tubes on a 106” motor?
     
    Last edited: Apr 5, 2021
  2. Motorbikerx

    Motorbikerx Well-Known Member

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    Don't you mean Bad Boy?
    I'd not heard of them before and googled .
    My Vegas was dynoed with RPW Slash but it was bored to 109, think I gave the dyno sheet to the guy that bought the bike,
    Bad Boy are 2-1 Slash are duals.
    Slash flow with the Vic lines.
    BadBoy is straight.
    You got a tough decision ahead.
     
  3. James2003x

    James2003x Active Member

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    Yes bad boy. They have another one that’s big something.
    The bad boy is also shorter than the Thor by a little bit still allowing access to the axle. I emailed and called RPW last week to ask about the comparison from the Thor to the bad boy but no response yet.
     
  4. Motorbikerx

    Motorbikerx Well-Known Member

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    Ok yeah just had a look at mine and axle may foul...that's the tyre shops problem, they're good with Vic's so may not be a drama.
    Surely ya don't have to drop the zorst to get the axle out!
    My XC is worse fouled and they never had a problem getting the axle out cos the wheels hanging down from the lift...Can't see that being a problem
    Bad Boy does look good I must admit, Just got it up on RPW site and it's almost same as Thor
    Muffler a tad shorter and fatter, sits maybe an inch higher, header pipes almost the same, I'd say performance would be much the same.
    2-1 may give better low to mid-range and be equal to Slash flat out.
    Only time I'm ever absolutely flat out
    is at the drags and even there there's another gear to go.
    For me it's down to looks.
    Problem is I like em both!!!
    Lucky for me I have both the Thor and the Slash and can change if I wish whenever I like.
    EDIT the other is BIG SLASH.
    they sent me that by accident when I ordered the Slash and I sent em back and got the Slash Duals sent.
    Choices choices choices!!!
     
  5. Motorbikerx

    Motorbikerx Well-Known Member

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    RPW BAD BOY IMG_20210406_135152.jpg
     
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  6. James2003x

    James2003x Active Member

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    Imo that looks better than the Thor. I was able to talk to RPW today. She said the head pipe is the exact same. Just different muffler. She said the Thor will be a little deeper and louder but not by much.


    I was also told that a lot of guys that race the bikes run the slash pipes. I think that may be backwards with the two into one pipes.

    so now I need to decide. Slash or Bad Boy.
     
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  7. Motorbikerx

    Motorbikerx Well-Known Member

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    Heads or Tails:ok:

    ...I reckon you'll go the Bad Boy.
     
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  8. James2003x

    James2003x Active Member

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    Possibly.
     
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  9. Bikesofbrads

    Bikesofbrads Well-Known Member

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    It’s only money so just get both
     
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  10. Motorbikerx

    Motorbikerx Well-Known Member

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    I happen to have both RPW Slash and Thor, and the bloke who was hell-bent on swapping the Slash over onto the Yellow bike in place of Thor, has taken a liking to Thor " the God of Thunder".
    Who woulda thunk?
     
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  11. Motorbikerx

    Motorbikerx Well-Known Member

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    Now that I've seen your bike I'd sway towards the RPW Slash myself.
     
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  12. James2003x

    James2003x Active Member

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    Yeah whey would look better but I don’t want to leave too much HP and torque on the table by not using a 2 into 1. I can’t even find a comparison from those to the Thor I thought HC had two graphs but I can’t find them.
     
  13. Motorbikerx

    Motorbikerx Well-Known Member

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    In my talks with Kevinx the view was at wide open throttle theyd flow the same.
    The 2-1 scavenge may pick up a little more low to mid-range
    But hey these engines have truckloads of both HP and Torque from idle to redline and past.
    What's a couple on this fictitious table gonna matter?.
    Are you dragging it?
    My old 109" combo with RPW Slash pipes ran [email protected]
    I wasn't far off high elevens.

    Which Dyno chart were you looking for?...this one? Screenshot_2020-07-06-19-40-48-46.png
     
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