Main Motorcycle: '08 Sprint ST
Join Date: Nov 2009
Location: Sydney, Australia
Other Motorcycle: '06 Daytona 955i
Extra Motorcycle: Husqvarna Terra 650
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I'd read there was a 7% increase in 6th and a test ride article stated 4K rpm at 70 mph which is sort of funny because that is exactly what my ST does.
Phil - what a great post That's quite a journey and one heck of a snowball(ing) job!
As you know, I stayed out of the exhaust ports on mine. It appears that it's worth a couple extra HP though. Maybe someday.
The GT sixth gear is very tempting, but I'm not too keen on pulling the motor. If you ever get some spare time, photos of the journey would be interesting.
Wow Phil that was a real mission!
I am keen to know what your dyno figures show up after that episode.
What tune are you running?
Great post. I just started my TBs and the exhaust is off to do the same. I'm trying to source a no cat down pipe, one without the cat bulge. No luck so far so I might have a custom one made using the stock pipe. Then they will be off for ceramic coating inside and out. I'm trying to design a bigger air intake for the air box. Got some ideas and will pass them by a friend that can fabricate. Might be out of thin alum first then maybe CF if it works out well. Got all winter for this project.
By the way, are you willing to share your tune?
ALso, what does your down pipe look like? Any bulge at the bottom? I know DownUnder doesn't require a cat but just wondering if they still us the same pipe with no cat installed.
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