Quote:
Originally Posted by 335BBS
How is your car running? What makes you think you need this done at all??
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Because I know how a cleaned N54 feels (my friends who just had his done) and compared to mine, its shit. Also, there is a slight misfire, and i checked coils and plugs and they are all pristine. Only way to 100% be sure is to crack open the valves yes, but there is substantial evidence that it is carbon buildup