The Uni filter alone shouldn't change your jetting/tuning
I opened my air box last week to find my own filter had fallen apart inside, nothing but the wire mesh screen was left!!
Put a Uni in it and still can't tell the difference
Now a muffler on the other hand.....
Many many years ago I worked in a bike shop that did a lot of performance work
Basic rule as I recall was when ya open the exhaust with a free flowing muffler increase your idle and main one size and raise the pin a notch
That should get ya close enough to start
Also we used to get performance jetting kits that matched the velocity stacks and pipes we used to install but I can't recall who made them
Seems like the manufacturer of the muffler had a list of what kits went with what pipes
Might call them to see if they know what jets their pipe will need
Otherwise you end up with a nice collection of misc jets while ya figure it out
I'll check my toolbox tomorrow and see if I still have one of those boxes with the company name on it
I still use the boxes to carry spare plugs for my Triumph in the saddle bags. ?
Those 4cyl kits came in really nice plastic boxes. ??
RemMax
