S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

Rattling primary cats, hp loss??

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Old 03-06-2009, 02:29 AM
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Rattling primary cats, hp loss??

the primary cats are finally toasted. They are both rattling pretty badly. They most of been bad for a while and the 160+belt parkway run last night must of finished them off.


How much horsepower loss does bad cats do??

the car today was pretty sluggish and theres def a whole lot of power loss.


i dont wanna go back to the 600 cell primaries as they are suffocating my engine from breathing especilly thorught the shorty headers.

Whats the best/lowest cell i can run without a check engine light?? 300cell, 400cell???

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