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The Miller brand cat I bought came with a 25k mile warranty. I say the aftermarket is the way to go. There are cheap aftermarket and good ones. Take the
time to get a good one and you'll be fine. The OEM cat in a 240 isn't anything
special. Except for the price. By the way many of the 240s I've worked on the
OEM cat was exported from the US to install on the car. So how could the aftermarket cats be bad if they are made here?
I've installed Miller,Bosal brands and I just installed a Davico brand cat and they all were of same or better quality compared to the stock cat. The Miller
Cat that I installed on my turbo is better quality than the original in my
opinion. I think I bought the Miller cat from RPR in CA. Happy rolling.
Dave 82 242ti 278k mi.
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