94 ls Catback vs Axleback?

renarudo

New Member
A cat back will do a little while an axle back will do even less.
Sorry to thread jack.....but wouldn't a header add to that modification or just doing bolt on not productive? I ask because I know Muckman is great about going into detail about why or how stuff works.
 

Muckman

Not a M0derator
Header yes. But the biggest restriction in the exhaust system is always going to be the catalytic converter. You wont see big gains until you upgrade to high flow cat (or delete it).
 


Stko97

New Member
Header yes. But the biggest restriction in the exhaust system is always going to be the catalytic converter. You wont see big gains until you upgrade to high flow cat (or delete it).
So I should upgrade the cat too?
 

Kamikaze

New Member
Yes or run it straight pipe (no cat) or with a "test pipe" also bigger piping size helps too.

Sent from my MB886 using Tapatalk
 

renarudo

New Member
Thanks to this thread a learned quite a bit.
 


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