I got my eBay headers about a month ago and today I finally got around to putting them on. Yeah, it was a TOTAL B!tc4 and it took my brother and I about 16 hours without a lift and power tools. <-(More on that later, I made a DIY. First one for a header install on an XI) the performance...

I have a borla cat back on my 2001 bmw 330ci, and I like the sound, but can I take out a resonator to make it louder? And If I do take out the resonator, will it be the same exhaust note as right now, only louder? Thanks you guys are the best!!