Alright so I bought this mint ZX7R with a pipe on it and well it runs weird down low under 6000rpms its slow, runs rough, I can feel like pops through the gas tank and it gargles alot while trying to go like 60KMH while in 3rd, and 4th. Unless its up in the RPMS it seems to not like low RPMS. I took it to my dealer they are saying it needs to be jetted, its older technology get used it to etc. I mean I had a 00 VTR and it ran fine with pipes this thing doesnt like it. Plus when I try to redline it the tach gets all weird and bounces all over the place above 10000.