high flow cats
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high flow cats
Can anyone out there give me some info on high flow cats. I am putting cold air intake and dual cat backs on 98 F-150 and would like to get the most out of them as I can. Are they worth the trouble?
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Joined: Dec 2001
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From: Louisville,Ky.
Yes, the front 2 are actually like preheaters to help the main cat's work better. There are 2 per side. This is why Chebby's and Dodge's are so much louder than a Ford when you install a Flowmaster muffler. They don't use as many.
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If you do replace the 4 with 2 high flow what kind of gain? WIll it not make the check engine light go off? I changed these on my old chevy silverado when I changed over to a flowmaster and there was a nice change in performance. With fords four cat system and living in california, if you changed to two would it pass the smog test?
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From: Whitehouse,TX
Originally Posted by Justen
wait a minute, I don't know much about ford trucks but did you just say they have 4 cats
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