2014 / 2017 airbox snorkels

[PowerDubs_imp]

Powerdubs... Yes I got both items to install this winter TSR Air Filter Kit and the TSR Intake Velocity Stacks. Already have the Yoshimura full exhaust fitted.

Waiting patiently to see what you get with the mods you do and actual numbers from a dyno.

Of course I will do the reflash but I sure wish I had your resources to measure actual gains. Maybe I will need to find a competent person in my area to do this. I have a guy that does the tuning on my modified carbureted bikes... not sure he does the ones with fuel injection. I will need to ask him some day.

Again... waiting excitedly to see your numbers.

Check here to see if there is a shop close enough to drive to for you-

http://dynojet.com/dynocenters/dynojet-m...nters.aspx


How does the bike sound without a cat? That is my biggest fear- many cars get raspy and sound like crap when the cat is removed.

I'm not sure I would do the TSR velocity stacks on an otherwise stock engine. Like anything else on a motor- too big is noo good! That is true for intake runners, throttle bodies, cams, exhaust pipe diameter.... really easy to throw money at parts a shop is more than happy to sell you- and make the bike run worse, or be slower in reality even though you 'feel' it is fast (Due to a lighter wallet )

Put it this way- I could have bought them if I wanted to, but I think they are way too big for the bike's needs even with the cams I am going to install.

There is a reason I modified the stock ones instead. Modern engines are soo well designed (CAD, flow bench, simulators and actually factory testing) that there typically are no inherit flaws to speak of. No low hanging fruit.

The gains to be made on this engine are removing what the factory put there on purpose- from the simple such as tame final drive gearing, quiet as a sewing machine muffler, to more advanced (regulated) emission stuff like the cat, and lean fueling- which also means really really tame camshafts.

For reference the TSR 'funnel' are 35mm which they proudly proclaim are the same size as the TB. See anything wrong with that? They literally are taking the velocity out of a velocity stack. There is a reason their website says 'race only'. Sure they show a dyno chart- WOT. What happens at partial throttle? Whoops.


Give me a minute- I'll dig around for pics and update the post to show you what I did.
My stacks. Started with-




And then did this-















Unlike the TSR- I am keeping the exact same factory lip shape, same intake diameter, same outlet diameter... just removing what I believe to be an intentional midway choke point.

And since these are available dirt cheap and are plug and play with no modification needed (holes drilled in airbox) I have nothing to loose but time.




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