Yeah you cant do the variator mod to my Zuma. I did by an aftermarket variator but it came one slider short...so I've been waiting for a 15cent plastic piece to come from the netherlands....and its coming by postal mail...ugh
Also I was wondering if you think speeds of 40mph could push more air into the air filter. My performance airfilter is shaped like a cone, but because of the plastic panel it faces backwards. I could cut a hole in the plastic and mount the scoop forwards, kind of like an air ram on a motorcycle. Do you think having the scoop face forward would make a difference? I'm guessing no but I thought I'd ask.
I took a picture of it but my home computer crashed. I'll post it as soon as I can get the computer out of safe mode.
Also I'd be interested to see some pictures of your exhasut and baffle if you have any.