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Originally Posted by heusing240i
So, I'm stumped slightly. I left my catless dp on over the winter when I stored it. First start of the season it ran real rough (bucking, sputtering, surging). So I put the stock cat back on because I wanted to order a gasket for it anyways. I ran the can for a few weeks with the stock cat on with no issues. Put the vrsf cat on with the nestle gasket and v-clamp, started it up and same thing. I ran it to get fresh gas in it (first fill up of the season) and on my way back home the CEL light came on and the car felt like it was in limp mode. Ran code on my UScan code reader as well as the jb4 and got P0170/18001 - mixture control: mixture too lean. I checked the O2 sensors, intake and MAF plug. All were taught. Any other ideas or do I need to put everything back to stock again and see if it fixes itself?
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Well..... I put the stock cat on, reset the code, drove for 100 miles and the light hasn't returned yet. Not sure if there was a leak somewhere within the CL DP or not
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