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The BMW Range
5 Series
E39
Removing of Catalytic Converter
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<blockquote data-quote="ess530i" data-source="post: 436375" data-attributes="member: 13496"><p>i replaced the cat on my stock e60 header (yes, the cats are on the headers) with straight pipes and it doesn't drive very well. lost the low end torque but gained some at mid-high rpm range. it is very similar to removing the center resonators. car is auto and it somehow cause the gbox to shift early thus losing even more low end pickup. am now shopping for a new set of headers... any recommendations?</p></blockquote><p></p>
[QUOTE="ess530i, post: 436375, member: 13496"] i replaced the cat on my stock e60 header (yes, the cats are on the headers) with straight pipes and it doesn't drive very well. lost the low end torque but gained some at mid-high rpm range. it is very similar to removing the center resonators. car is auto and it somehow cause the gbox to shift early thus losing even more low end pickup. am now shopping for a new set of headers... any recommendations? [/QUOTE]
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The BMW Range
5 Series
E39
Removing of Catalytic Converter
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