Has anyone added exhaust pressure crossovers on a 1999 F4? The pressure crossovers (like the 2003 CBR 600RRs have) are a great idea, and I am wondering if anyon has done anything like this to their bike with success and positive results. I took measurements off a 2003 600RR and am planning on adding them if I can be certain I get results out of them... hell, I may do it anyway and dyno it to see if it works. The principle is that the crossovers equalize the pressure of the cylinders as the exhaust exits the engine making for more even torque. If I can get some midrange out of this, it would be cool.

I have the knowledge and machinery to drill the holes and bend the pipes and get everything welded, so manufacturing wont be a problem.

Any feedback would be greatly appreciated, and if it works I will be more than happy to report it here so other people can do it as well.

-Ian

 

Um, my '96 F3 has scavenging tubes on the stock header. I don't see why they would be eliminated on a later bike. You sure you have stock headers?

 

Yes I am sure they are stock. None of the F4s I have seen have them, and the few F4is I have looked at are devoid of them as well. Are you sure you have stock headers??

Kidding, but what is the O.D. on the tubes on your bike?