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I have used two after market catalytic converters + pipe largely because Toyota charges $1050. The rear (cat back) dual muffler assembly I bought from Toyota because it did not appear overpriced for the quality and it is still looking good after 4 years. I found the after market (NAPA and Parts Source nameless) lasted 2 years each. The latest, number 3 was made by Bosal which I bought from Rock Auto Wi. and installed yesterday, it fit well and looks well built.
I passed auto emissions today with unbelievably low readings. Previous test failed on three counts on HC, CO and Nox which was triple the pass number. I took the gamble and did not get the diagnostic and i am happy it worked out for the best. This was for a 97 Camry 5SFE. On reading Cat warranties i found they are not worth the paper they are written on, weasel clauses up the ying yang.
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