Alot depends on altitude as well whats good for me isn't always good for you. I run 155 main and 48 pilot and is just about perfect but I am at almost 2,000 feet above sea level with the Freak kit , AI removed , gutted stock pipes. You may in addition to all the above advise want to pull your pipes and see if the reducer cone was left in. If not get a small baffle to give you some back pressure. I don't know your elevation but 150 mains with what you have described doesn't sound far off might want to look at your needle to see if maybe it is shimmed too much causing a rich condition since more shims = more fuel with the same size jet. I would also remove the horseshoe bits and just put the K&N pods on.

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