I just installed a Yoshimura R77 4:1 full exhaust on my 2006 ZX14. I have the secondary flies out and a K&N air filter... bike is running slightly rich with the PCIII Map I found on their site for a similar Yosh (but not the R77) with "flies out and stock or aftermarket air filter."
I was wondering if anyone had a good tune I could work from for this or a very similar setup?
Bike is definitely lighter and faster, but I often get a "pop" on decel around 3500 and below 3500 seems too rich, as it is bogging down a little... exhaust also doesn't get nearly as hot as I would expect, indicating a rich condition.
feel free to email me a tune at debusch@gmail.com.