Quote:
Originally Posted by <96 Runner>
Guys, it would be a good idea to chill on the "ditch the cats altogether" talk. Let's get back to the original question(s). 2.5 should be ok for now. I assume you have already done your research on the fuel/timing mods needed to make the 3.4 run properly (and safely) with the SC'r, correct? Because I will tell you one thing, exhaust won't mean squat if that thing is running lean all over the place (which it will if you don't get a fuel/timing kit on there) and the engine blows.
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unfortunately I do know that I will hafta spend the extra dough for the fuel/timing mods with the s/c. what I was mostly interested in was the potential drawbacks to putting a 's/c ready' 2.5" exhaust on a vehicle without the actual s/c. also wondering if dumping the second cat is gonna hurt or help. I dont need to worry about emissions stuff as where I live is not regulated. more along the line of what the truck will work best with, I also dont want to be 'that guy' and drive a pollution creating machine when I dont have to, especially if the truck runs better with all the emissions stuff intact. Im currently getting a pretty regular 20-21mpg with the ethanol/winter gas, I was getting 22-23 with regular non winter gas.
I guess im really trying to not have to spend $2k+ for a factory cat(s) replacement without any other exhaust stuffs. when I can hit up my local muffler shop and spend $500 for new cat(s) and full system all the way back, and be better equipped for a possible s/c upgrade in the future.