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Originally Posted by JL8Jeff
High flow 3" cats run about $38 each. The Pacesetter y-pipe I got cost $129 shipped. I'll be getting the cats welded into the y-pipe at some point in time to stay legal. The free flowing cats don't rob much power at all. The muffler robs a lot more than the cats. But until I get the cats added, I have to run the O2 sims (paid $50 on Ebay) so the computer stays happy(although it doesn't really matter since I already passed inspection in Nov).
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we could argue about your treehuggerness all say & the fact remains cats cost more so few are willing to pay that extra $38x2+shipping+cutting & welding of their $129 off road ypipe. You also know that even moving your working cats is illegal so anythign your doing is still against the law so don't think your any better then anyone else cuz your slurging on new cats. Not to mention having cats installed is a complete pita on 4th gens & the ground clearance with most of the aftermarket cats is horrendous and it still wouldnt guarantee the computer wont throw a code meaning you'd need to cheat to pass emissions anywayz...there are thousands that have done the same thing & have throw inefficient cat codes even with perfectly functioning cats.