Kawasaki ZX4RR, Graves velocity stacks do not work when installed wrong 

As always, your through research and comparisons of incorrectly installed vs correctly installed vs stock figures, is extremely helpful. My 4RR was flashed by MooreMafia, however, when I do velocity stacks and a full exhaust, I'll be sending my ECU to you.

Good video Dave 👍🏻 My new Zx4rr is going to the dyno next month with the graves velocity stacks/sprint air filter and full akrapovic system like my old bike was (low sided it at tail of the dragon) and it was totaled Yep that was me Interested to see if the same numbers will be achieved…would think so because he saved the file from my old bike and all he has to do is maybe tweak it hear or there Can’t wait Stock bike is sloooooow

When not every cylinder has the same length funnel, does it require per-cylinder tuning to get the engine to run smoothly, since half of the power strokes will be essentially producing different power characteristics than the other half?