Originally Posted by Aardwolf

I think a lot of us that have ordered FI resonated TDX were on the fence about what size resonator to get, 12 or 18. I'm in that boat, with about 3 more weeks to wait on my 18" res (spoke with FI today, currently on about #1020). I've listened to all the youtube clips until I'm blue in the ear, but still haven't definitively made up my mind. When I spoke with them today, I found out this little nugget that I don't think has been shared enough. If non-res was a 10, and stock was a 0, 18" res would be about a 3, and 12" would be a 7-8. Resonators cut down total noise, not only interior.

With that said, do I want to spend $1400 on a 30% audible increase (albeit a much larger percentage increase in tone quality)? Yes, I'm considering res HFC and Stillen G3 intakes, but only considering. I'm not a fan of the HFC hiss. When you total up RHFC, G3's, Uprev, and labor, we're getting real close to $2000 additional dollars to gain some HPs and dB's. I would hate to feel lacking a few months into owning the exhaust and feel the need to spend that type of cash.

What's your opinion?