Garden hose. The scanner was put on my engine three seperate times and had 9-codes all related to the O2's. I replaced the two downstream with spares and still got the codes. I checked everything on my engine, even swapped ECU's out. Still 9 O2 codes. I removed the Y-pipe and used my garden hose and sprayed for about 15 minutes through both ends. Put the scanner back on, and no more codes. The engine has significant noticable power too. I think the CAT design so close to the exhaust manifolds is what possibly is the problem with this design. I have heard alot of people complaining about their CATS. I'm one of them. This is my second Y-pipe in a year. No more for me, I have found the secret. Just clean them out once a month. It only takes about an hour to remove and install. Takes a few hours to dry them out. Sure beats buying and replaceing O2 sensors that are not even bad. I checked my voltage readings and had signal. Of course the codes said everyhting was messed up. It all happens in those CATS.

 

Turf, did you replace the spark plug wires and plugs yet?

 

Yup. Kingsbourne 8mm and new autozone plugs. That got rid of one code. But now I'm just showing one bad downstream o2. I'm gonna reach out to will tillery sometime soon for a used o2sensor. I'm just really busy for now. So I parked it at my dads because I keep getting tickets with it parked in the City and the inspection expired.

 

I'm glad we don't have to deal with inspection and emissions down here. I bought a O2 simulator for 35 bucks. Haven't installed it yet but I'm hoping to do away with the down streams and just trick the computer bc they are throwing codes.