Just installed a set of Tyga GP on my wifes NSR, all stock & it runs very well.
If your just street riding you should have a problem. Also you can check your plugs and tell if your going to damage your engine. Not that much different then if you were to go thru the jetting process, it's test and trial no matter what you do.
Now if your going to do a track day or race well thats mean revvvvvvv's and seize it may, it's wide open for long periods.
No matter what it's your call. If your not comfortable with it don't do it.
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