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2007 zx6r exhaust limiter?

GoddessBitch2010-05-17 15:09:25 +0000 #1
Here's an article www.motorcycle.com/s...s-gsxr600-82371.html scroll down a bit. I'm thinking about doing this. Any thoughts? Good idea/bad idea?

And a how to video. Video From YouTube:(link)

kivyee2010-05-17 15:16:34 +0000 #2
Since the power valve is only closed at upper RPMs to limit the noise, there really shouldn't be any issues at all. As with all mods that increase air flow through the engine there is a potential for the engine to run lean IF the ECU is not set-up to register higher flow rates, i.e. volumetric vs mass sensing. Not sure how the ninja ECU is set-up, but my guess is that it won't really be a problem.

This being a "free" mod that actually adds power, I'm sure it's been done to death and information on any potential side-effects should be easily found.
GoddessBitch2010-05-17 15:27:16 +0000 #3
I seem to be able to find quite a bit about doing the mod, but not any side effects. My understanding is that it changes the mapping to be the same as the European bikes, which is louder than our standards allow, thus gaing 5 hp. But is there a chance of effing up my engine?
rc6042010-05-17 15:45:50 +0000 #4
Think about it this way - bikes like 600rr's and 1000rr's have similar valves in the exhaust for noise control. They don't "need" to be re-mapped when a slip-on is installed (this removes the valve). You should be fine.
Jaybo2010-05-17 16:15:34 +0000 #5
If you're concerned then why bother? Unless you're routinely riding your bike between 13,000 and 14,000 rpm you aren't going to really notice a difference.

I'd say it should be harmless to do this mod, and if you're trying to get the most hp out of your motorcycle anyways you would be (should be?) going and adjusting the fueling from stock anyways.. so mapping shouldn't be a problem in the long run.

The example given with the slip on is correct but it should be mentioned that if you're interested in truly optaining any claimed performance benefits of an aftermarket exhaust then there is a need to adjust the fueling, if it's simply for looks and sound in that case then it's not necessary unless there are pronounced flat spots in the throttle range.

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