Thanks for your reply!
Can it be noisier than it was without the filter?
To be honest, I didn't detect much of a difference between the noise before I had a filter and the noise after I had a filter.
Why would someone put in a bigger jet? I doubt this is what happened since it's been sitting in someone's garage for years, (had 200 some miles on it) but you never know...
Where would I get these "pipes" you're referring to?