andythefiredog

So to be warranty-denial-proof, should the 3rd cat stay as is? I'm not sure just how much more freely flowing the exhaust will be without it. If it's 2%,5%,15%, I'd probably just leave it on.

Can anyone definitively say whether cutting out the 3rd cat will void the warranty? Are the gains in flow enough to justify the "risk" of taking it out? Still trying to decide between the Magnaflow 18 or the FlowMaster 70 series.

You are amazing! I wish you'd Create another for how to get playlists to show up on the ad card, although I use a Mac.

Ok, so the FlowMaster 853072 or the MagnaFlow 18"? Either way, I'm cutting out the 3rd cat, all the way to the tailpipes

Yes, I've been trying to decide for the last few days between icry's setup and yours. So with the Magnaflow, you were experiencing drone?

Yes it's a third cat infront of the muffler. That's what I was trying to determine ...why cut it out at all? How much does it impact the sound?

Yes, I was referring to the Cat before the muffler, I described it in reverse. Did you remove everything from (including) the third cat on and replace it with the muffler and tailpipes? Looking to do this with as little drone as possible. Thanks

mzodarg, I read all your posts and I want to the same thing, MagnaFlow 18" one in / two out for the 5.3. I read that you removed the flapper valve and the resonator. Did they also remove the 3rd Cat way in the back? Was that put back on? Your sound is perfect!

Holy crap! They shot up to $377.99! I paid $269.65 one week ago. My buddy runs a big very popular truck accessory store down here and the best he could do on the same part number was high $300's.

I got mine from amazon. $259 shipped. Chrome plated (not stainless steel) Lund 6" straight ovals. Love them!