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Discussion Starter #1
Hey guys, sorry to ask a newb question but ive been searching up on de-cat pipes and found out there were no CFM Flow written beside it, is it cuz theres no restriction at all on de-cats? Also for the cat convertors with the CFM written as the highest, does that mean it flows the best regardless of other mods?

Eventually does this mean the De-cat pipe works the best? And also will it make a noticable difference in using a decat pipe?
 

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Discussion Starter #2
I have a 3.5inch high flow cat, so if i use a 3 inch (cannot find 3.5) decat pipe, it will be more effective than my original cat?
 
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