Exhaust "Y" pipe question
#1
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on exhaust "Y" pipe there are what appears to be 2 small catalytic converts or something looking like 2 of them then when the pipe joints together there is a big or larger looking one. what are the smaller looking ones.
1999 Blazer 4.3 V6
1999 Blazer 4.3 V6
#2
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The '98 and up Blazers have 3 catalytic converters. You're exactly right that the two smaller ones on each side of the y-pipe are catalytic converters, or sometimes called pre-cats, and the larger one after the y-pipe is the main cat.
#4
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the new "Y" pipe I ordered didn't show the pre-converts in the picture. if the new one don't have them will that cause a problem???
#8
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If your vehicle is 1999 or newer it will.
#9
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what is their reason for a pre-cat.
and yes mind is a 1999
the one I order is supposed to be for 99 model, and it arrived today and no pre-cat on it. it from CATCO.