986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - P0430 Failed Cat

itsnotanova · 10-03-2019, 02:34 AM

I've always thought that driving with a weak/bad AOS leads to an early death for the cats. Penetrating lube and some heat works pretty good to loosen the bolts up. I also recommend not using an air tool to remove them. You need to take it slow so you can feel if they're not turning. Sometimes tightening the bolt before loosening helps. I've also had to go back and forth a few times.

10-03-2019, 02:34 AM	#8
itsnotanova Registered User Join Date: Jul 2013 Location: Bastrop, Tx Posts: 2,643	I've always thought that driving with a weak/bad AOS leads to an early death for the cats. Penetrating lube and some heat works pretty good to loosen the bolts up. I also recommend not using an air tool to remove them. You need to take it slow so you can feel if they're not turning. Sometimes tightening the bolt before loosening helps. I've also had to go back and forth a few times. __________________ Woody Last edited by itsnotanova; 10-03-2019 at 02:38 AM.