Currently on my 4th with 2AZ FE Pontiac vibe GT 2009 catless and ecu reflash as well..
So far haven’t really noticed THAT much of a difference
We shall see on this 4th one but so far it was a pig at 800-1000 Kms before a huge GULP
I live in Canada so it’s not a big deal but at the same time I’ve seen some for 100 and somthing on Amazon
I was thinking of adding it the 2.5 inch mid pipe behind the ultra quiet resonator