How long did you run the crackle tune? If I was a betting man, I'd bet you trashed it.

 

From about 50k-70k then got smart and bought monster tune. Have thought it has seemed smellier than it was before thought I was imagining it. Welp anyone got a spare stock downpipe sitting around? Is there a way to test this without replacing bungs?

 

It's dead. Another catalyst sacrificed to the poop and spackle gods. Check ebay/marketplace for another stock one, or just go high flow cat with a defouler.

I'd swap in new O2's for cheap insurance while you're in there. Crackle/pop tunes are absolutely brutal on catalysts and oxygen sensors.

 

Good call on the 02 sensors, I would love to just order a new high flow dp and call it a day but gotta smog my car in a couple months in cali so don’t want to risk it. I appreciate your guys input

 

My condolences on the CA emissions test. For what it's worth, I see the stock DP's pop up on ebay/marketplace for 150-300 fairly often. I sold mine on ebay for 350 shipped, but it took a while to sell. It was someone exactly in your shoes that needed a DP asap to pass emissions.