Did just what I needed it to do. Catless dp and full 3” straight exhaust, my ko4 was smoking like a banshee. Oil restrictor bolt has currently solved that issue.
It has worked wonders for my smoking problem accompanied with some oil additive my car doesn’t even smoke almost at all anymore
Easy to install, good quality product. Nothing to complain
I purchased this bolt probably 6 years ago now and it took until now for my junk stock turbo to start smoking people out again. To me, that makes it a $0.42 monthly subscription to not have a smoking turbo. Well worth it. Super easy install. Probably not even worth doing the review since anyone with a K04 has already done this but its definitely a product I would recommend, especially as a temporary fix.
always good products from DM.