anyone know where to get some velocity stacks for an 06 f4i??? and is the engine in the 06 the same as the 03?

 

most people sell the stacks along with the whole airbox, but i saw a classified on this forum and someone was selling it.
and i dont believe that the engine changes one bit for all the years of the f4. the only difference is that 01 has some pgm fi kinck. which was fixed with the 02+ models.

 

HRC and Erion make stacks if you're after performance.

 

i know for the 03+ 600rr those guys are running the 04/05 stock 1000rr stacks. the 04/05 1000rr guys run the 06/07 stacks. i have my old 04/05 stacks in the garage if your looking for a set.

let me know

dave

 

so the theory is to shorten the stacks then

 

is there really a gain?

 

sorry for the noob question but what is stacks and what does it do?

 

velocity stacks AKA air funnels-the rounds pipes in your airbox

 

Out of curiosity, what was the problemthat Honda had to fix?

Aren't the standard velocity stacks optimised? Therefore changes to them should only be done for specific racing applications, different tracks etc.?

 

performance theory is to lengthen them