Conversation Between 03EvoIII and 51.50

Hey there. I used a 3/4-1" straight o2 extender on the SECOND sensor and this kept my CELs from tripping even after several thousand miles of daily driving and hard driving. You'll like the response, performance and sounds that the you'll gain with those mods. it's pretty considerable. Good luck man!

Primary Cat delete pipes coming, best solution for permanently deleting o2 CEL?



I was reading that post and was wondering if you had anymore advice for this mod. I have purchased a set of those primary cat deletes for my 04 CTT and was also curious to know which O2 extensions you used as there are many different shapes, lengths, and inserts that go in them. I also have a set of fabspeed secondary cats bypass and magnaflow muffler as well that I am thinking about installing. Any input would be appreciated. Thank you.