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The cell phone apps are useful for same bike, same environmental conditions, same rider comparisons, not accurate times. However multiple runs prove they are pretty consistent within their limits.
This week I re-installed my shorty pipes with a different type of DB killer and came away with some pretty good results. I decreased my 0-60 times to 4.1 seconds. The pipes are loud but don't hurt my ears with the DB killers. they are the perforated hole type as compared to the ones I had before that have mechanical baffles protruding into the pipe.
new video
View: https://www.youtube.com/watch?v=6D_4leG-vC8
I've installed the Xpipe decat and the Booster Plug from Adventure Designs. I've noticed very little difference. Not sure if it's faster or not. Your iphone accelerometer and my seat of the pants accelerometer seem to dissagree. Given the chance, I doubt I would do it agin. The difference may be in bikes. Mine is a US spec bike that had pretty good fueling as a stock bike with the cat installed. I've read that the Euro spec bikes have low speed fueling problems, (probably too lean). Maybe I was trying to fix something that wasn't broken. Sure would like to try a good cam.
adding an X-pipe should release 3-4 HP mostly at the top end of the RPM range.........Mine is Euro 4 spec, the mufflers have a physical baffle in them, so that's one difference. US spec cans are straight through. If you have not, also remove the snorkel and its' gasket. The CAT is very restrictive, adding an X-pipe should release 3-4 HP mostly at the top end of the RPM range. Of course all X -pipes are not created equal, and debates rage on other forums as to which one is "best". also it is very important you do the ECU reset after every mod.
The Tech Bike X pipe.I agree the cam is restrictive, but there have been dyno runs showing some increases as I mentioned without a cam replacement (HP wise). regardless I have numbers indicating my "set up" has decreased 0-60 times by a round 6-9/10s of a second. whether I can say it is due to intake mods, de-cat, 44 tooth sprocket or my self designed mufflers, I don't know. There is a wealth of info on other forums actually, but many shills hawking products as well, The MeerKat crew as an example. Stuart is a nice man, but he is more or less an agent for Motone.
My mid range to top end power band is seemingly stronger, and without a proper timed distance or dyno run it can't be stated unequivocally. But as my Street twin used to die at higher rpms, it now revs nicely from low end to rev limit without gaps or flat spots. I can guess my sprocket has some to do with the low end.
There are about 4-5 guys that have installed Raisch cams, all lost low end torque and gained 10-15 HP at the top, which has been made possible in part by raising the rev limit to 7,500 RPM. using the same cell phone app I use one got a zero to 60 @ 3.6 seconds which is just 5/10s under my low cost mods, I see no need to go to the expense of a cam for such small top end gains where I ride. One guy installed the Raisch cam and said he saw little initial improvement, not sure what was up with that. The real issues with the street twin are not only the cam but the smaller valves, single throttle body and porting. by the time you correct all that you have a Thruxton.
In the end for me it is less about dyno numbers and 0-60 times, but how the bike responds to throttle at various rpms in each gear. You absolutely right about trying to compare models from different markets, there are at least 6 different tunes and several hardware differences from market to market.
Which x pipe did you buy out of curiosity?
After I removed the snorkle the bike seemed to wake up. I'm now sure it's running stronger. I'm using a Tec Bike Decat Xpipe, a Booster plug and removed the very small diameter snorkle. This skeptic is finally convinced.Mine is Euro 4 spec, the mufflers have a physical baffle in them, so that's one difference. US spec cans are straight through. If you have not, also remove the snorkel and its' gasket. The CAT is very restrictive, adding an X-pipe should release 3-4 HP mostly at the top end of the RPM range. Of course all X -pipes are not created equal, and debates rage on other forums as to which one is "best". also it is very important you do the ECU reset after every mod.
Didn't know Street Twins were produced in 2015. Mine's a 2017.
Mine too 2017, its an odd requirement, Raisch has no such limitation, how different can the cams be?
Have now got my cam from tec bike. Had to send them my VIN No. As they say that they are not all the same. I have ordered the few bits that you need to fit and cant wait to try it out.Mine too 2017, its an odd requirement, Raisch has no such limitation, how different can the cams be?
Anxious to hear the results...Have now got my cam from tec bike. Had to send them my VIN No. As they say that they are not all the same. I have ordered the few bits that you need to fit and cant wait to try it out.
Are you doing the work youself, would love to see some pictures of you install, and of course performance results. Stock bike ? or modified with de-Cat, mufflers etc.?Have now got my cam from tec bike. Had to send them my VIN No. As they say that they are not all the same. I have ordered the few bits that you need to fit and cant wait to try it out.