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Originally Posted by fung0001
Nice
Could anyone share experience in catted downpipe for n20 (520/528)?
So far i could only find a taiwan "stone" with product for my ride. Could not find others like hjs (only for f20/30)
Thks
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I had experience on the catless one, but not on the hi-flow catted one.
IMO, it is not worth the money to get the hi-flow catted aftermarket downpipe, because CEL still could come up. It is not guaranteed no CEL.