My 2001 Ram has 2 mini cats just down from the manifolds on the exhaust, I have a lek at the manifold and nee to replace the Y pipe, most aftermarket pipes only have the Y pipe and a single catalytic converter, can I use this pip and if so what do i do with the two oxygen sensors that have no home?

I did locate a Magnaflo OBGII that has the minicats on both manifold pipes, cost is outrageous at $2,300.00 where the one with out the minicats is about $350.00

The state the truck is registered i is Pennsylvania and not in a county where emissions testing is required.

 

You have a California Emissions truck. You can get away with 1 cat since you live in a federal emissions state. What I would do is order the one car y pipe and weld in two O2 sensor bungs and screw them in. If you have a bad manifold why do you need to replace the y pipe?

 

Thank you for your response, the manifold is intact the issue is when the transmission was replaced they cut the Y pipe in two spots and clamped it together, it failed state inspection and we had to weld it. I removed the whole exhaust system welded the 4 connection points and now cannot get a seal on the manifold connector. Good news is my welds are not leaking but leaking at the manifold connection.

 

So cut the pipe again, get it sealed to the manifold, re-weld the pipe.

 

Going to give that a try thought if I cut 1/2 - 3/4 there way through may move enough to get a seal and I can weld it while installed in the truck.