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post #1 of 11 (permalink) Old 01-05-2012, 09:32 AM Thread Starter
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Questions About Cats

Not the furry kind either! LOL Yesterday my car threw the CEL so I stopped at O'Reilly's and they pulled the code. Yup....P0430. Drove it over to a muffler shop and the guy told me my Bird needs a certain kind of converter since it has Calif. emissions on it and basic replacement cats would cause the CEL to come on again. WHAT???? I thought he was blowing carbon up my tailpipe. Anyone heard this before? How about you fellas there in Cali?? I thought a replacement converter was all the same. Dont see what the difference would be.
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post #2 of 11 (permalink) Old 01-05-2012, 09:36 AM
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Regular high flow cats will be fine, and will not cause your CEL to come on. I believe the only difference between the CA emission cars and the regular ones was the presence of the 3rd cat, but that is after the rear O2 sensors anyway, so even if you deleted it, it wouldn't cause the light to come on. Find another exhaust shop that knows what they are doing, and have them make you up some new downtubes into 2 high flow cats, and from there you can either get a full exhaust done, or just connect to your stock exhaust, depending on what your goal for the car is.

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post #3 of 11 (permalink) Old 01-05-2012, 09:52 AM
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Even non-CA emissions MN12's came with the 3rd cat. Every MN12 I've been under that was stock had it.

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post #4 of 11 (permalink) Old 01-05-2012, 10:38 AM
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+1 on all mn12's having 3rd cat

and +1 on you should be fine with any highflow cat you put in there.

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post #5 of 11 (permalink) Old 01-05-2012, 12:19 PM Thread Starter
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Thanks

Cool. Thats what i was thinking. I appreciate everyones input. I went to a Midas shop too, and they qouted me 1,000 bux to replace the whole Y pipe assembly (all three cats).. So I Googled it...and found this.http://www.discountconverter.com/dir...&CylSelected=8

I think for less than 4 bills I can do this myself and be happy.
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post #6 of 11 (permalink) Old 01-05-2012, 12:27 PM
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I had the two front cats replaced at a local shop for $200 (they provided new cats) and I rammed out the third with a pole. Worked for me!

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post #7 of 11 (permalink) Old 01-05-2012, 12:29 PM
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or you can go to www.mandrelexhaustsystems.com and check out what they have. Alot of the members run what they have and it works nicely. I think you will find that it's cheaper with their kit. You get the 2 front high flow cats with a xpipe from them or upgrade to the one I have which is Magnaflow, then you get the back half kit all the way out the back. Will sound great and you can do it yourself.

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post #8 of 11 (permalink) Old 01-05-2012, 09:48 PM
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Adding to 95LX's comment. They will put magnaflow high flow cats in for another 20 and if you omit the X pipe they offer, its 40 dollars cheaper.

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post #9 of 11 (permalink) Old 01-06-2012, 09:47 AM Thread Starter
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Finally found a shop here in town to replace the cats. And a couple blocks before I got there....the check engine light went out on its own. Maybe thats because I cleaned the MAF the day before. I found a thread over in the engine forums where someone was getting the P0430 code and one of the possibilities was the MAF being dirty....so I figured its a cheap and easy thing to do. No more check engine light and everythings cool. Thanks for all your help. If i had more time, I would have gone with the mandrelexhaustsystems.com stuff.....but as it turned out there was a broken stud and I would have fought that myself.
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post #10 of 11 (permalink) Old 01-31-2012, 11:14 AM Thread Starter
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Update

Went back to the muffler shop and had the 3rd cat removed. They fabbed a new Y pipe and welded it all together. Doesn't sound any different really, but I think its less restrictive. And I got all this done at Bucky's here in Everett. Tyson is the guy you need to talk to if anyone in the local area is interested. MadMikey, you were spot on....the new cats didn't throw the CEL.
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post #11 of 11 (permalink) Old 01-31-2012, 11:17 AM Thread Starter
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Update

Went back to the muffler shop and had the 3rd cat removed. They fabbed a new Y pipe and welded it all together. Doesn't sound any different really, but I think its less restrictive. And I got all this done at Bucky's here in Everett. Tyson is the guy you need to talk to if anyone in the local area is interested. Muchas gracias!!
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