surfnturf

I know the basic premise of the piggie pipe is more flow through gutted pre cats, but that you must relocate the oxygen sensors to pass smog. My car is being taken apart to do K04s and I'd love to do the pipes at the same time, but nowhere can I find exactly where to put the sensors after gutting the precats, and I assume that leaving them in the stock location would lead to CEL which is also an automatic smog failure. So can anybody tell me where to put the sensors? I will buy a set from VAST if I must, but I'd like to save on shipping and since my stock DPs are fine and I have access to a welder and tools to do the job with I'd like to do it on my own.

DAP@EPL

Move the secondary sensors just behind the main cats. Leave the primary sensors where they are.

3Scanner

hire someone to gut the pre-cats for you or, even better, buy authentic "Piggie Pipes" from Mike at Vast. I should have done this instead of making my own.

Everything works fine on my car, but as you can see from my photos, I didn't angle one of the O2 sensors enough so they are now touching. Only a matter of time before I will need to uninstall and get the real Piggie-pipes or aftermarket DP.

Good luck!

ajrettke

325 shipped will get you a set, already gutted and with 02 relocated already, that's a steal IMO