I just installed a K&N air filter and the shorty pipe (w/o baffle) on my 2005 Deluxe and started the rejetting process. I was surprised to find the carb already had a 120 main jet rather than the 115 main jet sold as "stock". The pilot jet, however, was the stock 25. I went ahead and put in a 27.5 pilot jet and left the 120 main jet in place. I did not move the needle valve clip yet. She sounds sweet but runs only OK . I can't seem to get the mixture to "lean" out using the air mixture screw.. The plug shows rich and even worse, when I crack the throttle sharply open while standing at idle, the engine just stops abruptly. I don't think that's good!!
I have removed the PAV system, sealing off the exhaust outlet and the manifold inlet. Is that a factor?
Anyway, any suggestions out there from someone who has successfully tuned their carb?? All help appreciated....
Tom