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post #1 of 10 (permalink) Old 04-13-2013, 08:06 PM Thread Starter
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Question Zzp Downpipe

Ok well my stock dp has a exhaust leak in the joint by the o2 senser so I decided to get a new dp so my questions are "catless or cat?" And as far as the o2 bung what do I get with that and yes its all coming from zzp..
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post #2 of 10 (permalink) Old 04-13-2013, 08:41 PM
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You need a cat for Maryland emissions . And for the bung you should have two, the third (wideband) is for forced induction.
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post #3 of 10 (permalink) Old 04-13-2013, 08:44 PM Thread Starter
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Quote:
Originally Posted by Batmobile View Post
You need a cat for Maryland emissions . And for the bung you should have two, the third (wideband) is for forced induction.
So for the bung I should get 02 bung for 2.2 and wideband or 2.2only or wideband only?
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post #4 of 10 (permalink) Old 04-13-2013, 08:59 PM
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post #5 of 10 (permalink) Old 04-13-2013, 09:00 PM Thread Starter
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Oh ok sweet deal
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post #6 of 10 (permalink) Old 04-14-2013, 05:23 AM
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I would agree, catless are more powerful than catted, but you will have to change it out every year for emissions testing, based on your state. Plus its less of a chance of throwing a code up for 02 sensor.

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post #7 of 10 (permalink) Old 04-14-2013, 08:53 AM
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I have the catless DP and love it. I had a bung put in it only because I needed one for my O2 sensor. I changed to the SS header at the same time and it didn't have a bung in it like the 2.2 header. Only real reason I went catless was it was what someone was selling for cheap at the time. MI doesnt have emission checks so that didn't matter and it will allow for more power down the road. I did however have to add a 90* adapter to the other O2 sensor that goes after the cat. Had to do this because sensor thought the car was too rich and was throwing a CEL

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post #8 of 10 (permalink) Old 04-14-2013, 09:05 AM
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I'm so thankful we don't have emissions testing in MN.

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post #9 of 10 (permalink) Old 04-14-2013, 11:30 AM
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We have them in NC, bummer... I would go catted to be on the safe side, unless you plan on camming it, bolt ons, and a tune, then catless would be better

2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille
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post #10 of 10 (permalink) Old 04-14-2013, 12:21 PM Thread Starter
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And to worry bout emissions eh catted fine plus I think the last bolt on I get is just the header
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