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V85TT Exhaust Thread

Discussion in 'V7/V85/V9 Chat & Tech' started by GT-Rx®, Jul 24, 2019.

?

I own a V85TT and...

  1. Love this muffler and will buy it!

    42.9%
  2. Prefer a more standard style muffler.

    42.9%
  3. Will stick with stock.

    14.3%
  1. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Leading off with our full Baja TT Werks style muffler. This is a prototype ONLY. Don’t be fooled by the looks vs. sound. The full meg is a muffler. Our Y-pipe is on the bench, and those puny 1.5” headers have to go. Full system next up. We’ll do a longer muffler for those who are running bags. I’ll post updates as we go.

    Interest from those who have or will be getting a V85TT?


    9EBA0B70-DD0B-48DB-A769-E1EE2CCBDE9F.jpeg
    B19D840F-FF94-4D25-9F9F-EEE1C9E80B90.jpeg
    ADF65CA9-E56D-474F-A742-5BA047D6F7F7.jpeg
     
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  2. Faisal

    Faisal Cruisin' Guzzisti

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    That looks nice. The finished product will look absolutely bitchin no doubt. Can't wait to see and hear the longer one with a cat delete.

    Are you thinking of diversifying the design or will it just be one exhaust type?

    How much gains in horsepower and torque do you except to see with a full exhaust system and a PCV?
     
  3. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Thanks, and diversifying how so? For the small few that will buy mine, I really can't spread my resources too thin. Everyone will likely forego mine for a bigger name brand, despite lesser quality and no dyno info.
    Power gains: Based on my two decades of Guzzi dyno work, getting them to the crank rated power is pretty easy, so 80 rwhp. We shall see just how stifled this motor is here soon. Dyno info to come when done and the fueling kit sorted, which will take some time, as no one seems to have full access to the ECU yet.
     
  4. Faisal

    Faisal Cruisin' Guzzisti

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    Have you seen the "big brands" you mentioned? Except for maybe one, they all look pretty horrible... That's a subjective matter, I understand, however; you need to actually be blind in one eye and have 90% cataract in the other eye to like the big brand designs over the GT-Rx design, even in its unfinished prototype phase.

    I'll be waiting for the dyno results and the full exhaust system then. 80rwhp sounds nice.
     
  5. kiwi dave

    kiwi dave GT Reference

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    Is the new pipe going to allow a normal pannier on the LHS, rather than having to extend outwards to avoid the existing silencer?

    I'd like to see a photo of the rear from directly behind.
     
  6. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    I sure have! And to me, they are all painfully bad recycles.
    Yes, I'm anxious to dig in. The ECU is in fact the same type as the California 1400 - with ride-by-wire of course. Ugh.
     
  7. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Dave, I’ll snap one tomorrow. The stock muffler bolts to the outside of the mount, mine bolts to the inside as you see. I’m pretty sure mine is significantly inward. I also didn’t need to crush the connector pipe down like they did stock. My goal was to allow a symmetrically balanced bag set, yes.
     
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  8. Faisal

    Faisal Cruisin' Guzzisti

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    Todd,

    Is there anything reasonable that can be done to the stock exhaust or cat that will cause a decent / adequate exhaust tone? Or is it too much of a hassle?

    Something temporary until you're done with the exhaust system options.
     
  9. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Nothing simple or easy, no. I guess I would start with just the Y-pipe, which is available now/soon. I should have one of mine ready to ship late next week.
     
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  10. Faisal

    Faisal Cruisin' Guzzisti

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    I'll have to wait then. Shipping costs of several parts individually will probably cost as much as a muffler.

    Also, removable baffle?
     
  11. Faisal

    Faisal Cruisin' Guzzisti

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    Any updates on this, Todd?
     
  12. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Will have some more photos to show later today. What are you waiting to see?
     
  13. Faisal

    Faisal Cruisin' Guzzisti

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    I would like to see and hear the full exhaust (headers + y pipe + long muffler for bags). Will it have a removable baffle?
     
  14. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    I'll can't show the long version until one is ordered. We dyno develop the muffler and db, so it would not be removable, however all of my systems have a nice deep sound and deliver great power.
     
  15. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Full system prototype pic below. All pieces are modular and can fit the stock parts, including headers... however, the GTM headers and Y-pipe for the full system are larger diameter, so those would need to be ordered as a set. Muffler will fit stock or GTM Y. I’ll put the order page up in the next day or so. Based on the poll, looks like little interest right now, so they will be built to paid order only.

    BD8388FA-B97A-499D-9B76-9D1E0E678B30.jpeg
     
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  16. Robert Gibson

    Robert Gibson Cruisin' Guzzisti GT Contributor

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    Nice piece of kit Todd, and paid order only certainly the way to go.
     
  17. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Thanks(!), and learned my lesson finally on building to verbal votes and orders.
     
  18. Faisal

    Faisal Cruisin' Guzzisti

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    I see the skid plate for the headers are not installed. Is that just for photographic reasons or will they not fit due to the larger diameter?

    Have you had any luck with the tuning process? I would like to place an order for the full system + long muffler but I'm waiting on tuning updates as well.

    Thank you Todd. Great looking exhaust btw.
     
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  19. Mayakovski

    Mayakovski Cruisin' Guzzisti GT Famiglia

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    Lookin' Sexy as Hell.
     
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  20. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Skid plate is still on. The silly header covers where they drop down to the tiny 1.5"/38mm diameter would not be reused, as those are just cosmetic covers.
    Tuning will take some time as they changed the Diag plug along with a new ECU for this bike. I will only sell the full system once I have the fueling resolved. For now, I will sell the Y-pipe and muffler.
    Welcome otherwise. I'll update this thread as we go.
     

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