Headers for a 2v 5.4 - Which ones?

[ExplorerTom]

True, but gutting the cats severely reduces low end torque so if you go that route add 2 more seconds to your 0-60 time

Removing the cat sure seemed to uncork my old 4 cylinder.

 

[1955moose]

It's like switching from a 2 inch to a 3 inch pipe. You get more flow on the top end, but most engines need the restriction for the low to mid range power. Same thing happened on my 86 mustang 5.0l. I installed a k&N cone filter on. I gained top end, but lost my low end torque.


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[CertusExpo]

On my race truck . I compensated for that with a SuperTrapp tube muffler.

 

[1955moose]

I had just put on flow master mufflers two weeks earlier.


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