after i got the stillen Y on and gutted my cat. sounds just like one when i shift into gears on occasion. I would like it except for i know that means something is wrong. you think its just air going through the exhaust? seriously, my friend thought i got a turbo when he rode in it.

ha, now i can save money and not buy the BOV sound emulator.

 

I dont think its a problem, my warpspeed pipe hissed loud at first also. I asked Dan if it was normal and he said yes. He said it takes 250miles for the pipe to queit down. Mine does not make that hissing noise anymore until around 5900rpm until shift. Take Care

 

I dont hear any hissing from my ypipe. My cai hisses very loud though