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4/14/2013
Location
Chippewa Falls, WI
US
Who's running XPR or Twisted Development mapped Vortex ECU on 19-21 KTM 450? Looking for experience and input with either one. No engine or pipe mods planned, plan on staying with 91 octane. Goal is better low-mid pull for using 3rd gear out of corners and reduced engine braking. Any specific experience with certain maps either is using?
Thanks
Thanks
I own a 21 KTM 450 and I have resisted getting a Vortex, and I have found that going to either a 13 51 or a 13-52 allows more low end pop out of third.
if you have the stock gearing, (13-49) then your ratio is 3.77.
Going to a 13-51 will make it 3.92, or a 13-52 will be 4.00, so you can get to the meat of third gear easier. Of course this will slow down top speed a bit but you may be able to leave it in third for most of your laps.
I'm also running a pipe, airbox cover vented, and cageless filter.
Like Brent said lower your gearing to a 51 rear. I can even start in 3rd with this and never shift to the first corner unless its really long.
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Right now gearing is stock and seems pretty good for tracks I ride. Whenever I went up a tooth on rear on my past bikes and it made me shift more often including my 17 450 KTM and I trying to stay away from shifting as much as possible. Goal is to make bottom/mid throttle cleaner, broader and more responsive.
Per comments here and other reviews I have read the Vortex gives modest gains in these areas. I also want to try the maps with reduced engine braking.
I was looking at going with the KTM connectivity unit but have been told experienced vet pro the Vortex is better way to go and best mod to start with for this bike over pipe.
The changes it made were so subtle that it wasn't worth the hassle or cost.
Im going to e bay it.
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