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Discussion Starter · #1 ·
anybody have any info on these?

i've heard from a good source that kooks came out with a 3" cat-back system. now you can run a true 3" system with all kooks components, from your kooks headers, to your kooks off-road section, to these new cat backs.

sounds cool...
 

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Stainless Steel Works already makes a 3" catback system :cheers:
 

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Discussion Starter · #3 ·
ok, i didn't know that, but i had heard that billy boat has been making a 3" for some time now. but you don't hear that much about them.... one tuner even said that the 3" systems he'd tried actually made less power than the 2.5" systems (which he attributed to more restrictive mufflers on the 3" systems compared to the popular 2.5" systems, borla and ghl were the ones he preferred)

just wondering if that was still the case or maybe kooks built a better muff and now 3" would be the way to go.

perhaps another reason for the power loss with the 3" is that the gasses have cooled sufficiently by the time they reach the cat backs that they like the extra velocity provided by the reduced 2.5" diameter?
 
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