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Jun 5, 2019 at 0:04 comment added Salvador Martinez No not a high flow cat
Jun 3, 2019 at 22:15 comment added Huesmann So did you install a high flow cat?
Jun 3, 2019 at 20:22 comment added Salvador Martinez I purchased the spacer from amazon. Here is the link. It has male and female threads and fit really good. amazon.com/dp/B00B1U6I54/ref=cm_sw_em_r_mt_dp_U_Cey9CbDH3SGW1
Jun 3, 2019 at 19:51 comment added Huesmann Then I guess my next Q is "what do you mean by an O2 sensor spacer?" To me, that is indicative of a spacer that is threaded into the O2 sensor bung, with male threads on one end and female on the other. Or possibly just a plan thin unthreaded spacer, though I'm not sure how much thread engagement you'd get with that kind of spacer.
Jun 3, 2019 at 19:48 comment added Salvador Martinez I'm not sure if you read my reply to Mike. I had a P0420 code which signifies a Cat Converter inefficiency. I then replaced all 3 oxygen sensors in hope that it would solve the problem. It did not. When I purchased the car 10,000 miles ago we had installed a new universal cat and the P0420 went away for a couple of months, but we didn't know that the car had 2 converters. The first one is next to the turbo and is not replaceable other than buying the whole assembly from VW 3C0254506EX which is $1000. Spacers have given many people success in getting rid of the P0420.
Jun 3, 2019 at 19:39 comment added Huesmann Well, my question is "why did you put a spacer in?"
Jun 3, 2019 at 19:35 comment added Salvador Martinez Yes, but why would the car stall from downstream spacer?
Jun 3, 2019 at 19:26 history answered Huesmann CC BY-SA 4.0