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Originally posted by Earthscum
reply to post by madmangunradio
"Test Pipes" are illegal. If you got pulled over and the officer just happened to notice you were running without a cat, you can get hit with EPA fines. Not pretty. Your toy will run fine without the cat, but it's illegal, and you're adding pollution.
The O2 sensor should be up a bit higher, closer to the manifold. If you put on long-pipe headers, they probably have a bung located on the "merge" pipe, basically as close to the engine as possible, but far enough downstream to get an average mix of all cylinders. There may be another small pipe that they cut as well... it's been a few years, so I can't remember for sure if the 4-runners had Oxygen injection tubes (injects air into the cat to help oxidation of the CO2 and O2... and, if you replace the pulley on the injector, it dilutes the exhaust system and is an old hot-rodder's trick for squeezing by emissions testing ).
And, DAMN!!! $4000?!? Merry F'in Christmas to you! Wow... that hurts me to even try to comprehend, considering that I only really make enough to live week to week. Sorry for both losses. So much for the spirit of giving, eh? Apparently it has become the spirit of taking. I hate going to stores anytime between T-day and C-day just because of the greed and insanity... wholly illogical thinking (But, it was on sale on Black Friday... why can't I get it on sale now? I WANT MY UMPALOOMPA!!!(2 weeks AFTER black friday)).