[Tapper1823]

Whats the best hi-flow cats for the money/cheaper. and headers.

I have a 2000 5.3 with true duals no mufflers out at 65 degree angles. are hiflow cats and headers going to make a sound difference?

 

[Pete95Sierra]

best hi-flo cat id go magnaflow.... I have flowtech shorty headers and they are nice and wont break the bank... you will prob get a little louder and deeper sound with the combination of the two also

 

[omegafiler]

Magnaflow is the way to go for cats. Not sure about any specific brand of headers, but I'd just go for the long-tube headers. You'll see much more noticable gains. They also cost more, of course.

 

[black jack]

Ive got slp on my 05 gto and i like them havent changed the ones on my truck yet.

 

[Tapper1823]

about how much does a set of magnaflow hiflow-cats cost?

 

[finalday7]

The magnaflow cats are about 65 bucks a piece from summit.

 

[no0b123]

Does replacing for hi-flow cats make a big difference, or should one invest in new piping?