Review on 🚗 Dorman 674-145 Front Catalytic Converter: Acura/Honda Models (Non-CARB Compliant) by Yiorgos Reynolds

The reason I kept them is because I spent 10 hours removing them so I just had to get them working and I only have one car . This product is absolute junk! The weld rims around the studs interfere with the nuts themselves, preventing the studs from being inserted during installation. Once inserted, bolts stay there forever. Hopefully I don't have to change that on my car anymore. The screw pattern does not match well with existing tubing. The only thing that really pissed me off and cost me 10 hours to replace two cats is the fact that they plug the oxygen sensor ports with a really big nut that requires a big allen wrench to remove and took forever. Take them off because I think they get put on when the part is welded, making them almost impossible to remove. Why should the oxygen sensor ports be closed during shipping? The inlet and outlet ports are gigantic and uncapped, so why cover the oxygen ports? I think it was a waste of money and a pain to remove. I don't know about performance, but after installation the car started leaking oil (this was not the case before). I think there was some kind of strong back pressure that was sending it through the EGR and blowing my gaskets. In general, stay away from this product unless you're willing to spend 10 hours changing everything or fixing something else. Definitely NOT OEM quality!