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					Originally Posted by Johnny Danger  If I were you I'd do some research on those headers before I pulled the plug. Others have reported that their vehicles developed CEL's over time. I suspect, the quality of the 200 cats (or lack thereof) may have been at the root of the problem. | 
	
 
It's the only header I know of that will fit a Boxster with a Tiptronic trans, except the same guy has these without the cats, then you have to run longer O2 sensors and put cats in the secondary spot.