[NunoSM]

Only changing OE trumpets with Jetprime trumpets you will gain 3.8 HP on Kawasaki ZX-10R without any ECU adjustment.

https://www.youtube.com/watch?v=HXjk0F5Q4AI


Can this be true?

 

[LDH]

It could be true, but I damn sure ain't going to try and find out.... been there, done that & have no desire to throw money at a solution to a problem that doesn't exist to begin with.

 

[SpazOnaZX]

...indeed. You can also ask yourself this: is the 1-2% (or less) improvement in power within the standard error factors between runs? And are you ever going to notice 1-2% power difference on this bike?

...I guess on a macro scale if I can get to the coffee shop 1% quicker for the rest of my life it would justify the install time.