Thread: Engine Misfire
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Old 08-06-2006, 11:37 AM   #22
sam323
top gear
 
Join Date: Jun 2006
Location: toronto
Posts: 2
hey guys , my body has the same problem on his 99 540, both his cats are gone but ive heard the after market ones only last like 2 or 3 month, how long do the magnoflows last and how much do they cost? and i also heard that when they mod these cars they remove cats and that gives more horse and replace it by pipes or something.....
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