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pre-cat
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  1. Member Rides and Project Cars
    I recently was blessed with the "Check Engine Soon" light. always glorious right? codes come back saying my pre-cat is clogging. so, instead of replacing the pre-cat i'm going to put a header on (duh :rambo: ) So i was wondering if i NEEDED a cat on for the car to run without being too rich or...
  2. Engine Swaps, Builds
    Hi all, Before I get jumped on, I was looking through a bunch of the different forums, but I didn't see one over another that I should use, so I figured I'd start here. This is my first post, and I just joined. If someone can tell me a better place to post this who's more familiar with the...
  3. B15 Sentra (2000 - 2006)
    i bought i megan header to replace the precat. I still have the second cat futher downstream. will i have to do the non fouler trick and would i put the non foulers on the first or second o2 sensor?
  4. B15 Sentra (2000 - 2006)
    looking for best answer possible. Car is consuming alot of oil lately. think the stock headers are still on. If I replace the headers now, does anyone think it will stop consuming so much oil? Or is it going to continue doing the same until the engine fails?
  5. B15 Sentra (2000 - 2006)
    So my car has been consuming alot of oil lately. The oil light will keep going on and shutting off. Was reading a little bit about the Pre-cat stuff and all. Does this sound like that? If I get some new Headers would this elminate any further problems with this pre cat thing?
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