Quote:
Originally Posted by yotionblade
I just baught my 2001 f350 sd lariat and it has the stock exhaust. I would like to start my modding and would like to start with a 4 inch exhaust. Does the 01 have a cat? I thaught they did. Do you need to keep your cat to pass emissions?
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Most of the superduties of that year did not come with a cat so, hence, you don't need one.
I just had my emissions done last month and speaking to the guy that does them, he said the states requirements are so lax that, it would take a poorly tuned truck to fail the test. It mostly just checks for smoke.
Make sure you have a clean air filter and of course, no aftermarket programming installed. You'll pass.
I have a 4" exhaust, intake and a larger turbo and I passed with lot's of room to spare.