Catylitic Convertor

[babyface]

im still having trouble deciding if i shuld get the magnaflow hi flow cat or the megan racing test pipe... or shuld i stay stock?

any suggestions on which ones best?


... and if i decide to get one of them... whts the size i shuld get? do i juss get a stock accord size one? i hav a 98 h22a4 motor, not sure if dat changes anything.

[NAiL05]

Get the magnaflow and get the 2.5".

[babyface]

Get the magnaflow and get the 2.5".

is both sides 2.5" ?


... whts actually the difference between the hi flow and the test pipe?



thanks.

[NAiL05]

Hi flow cat just does what it says. A test pipe is just a metal tube that replaces the cat. It would be kinda loud with just a test pipe. Hi flow cat will also be good if you have emissions area. They should have 2.5" both end when you get it.

[rickyduckworth]

cats are the least important thing when it comes to overall exhaust loudness. resonators and mufflers control that. cats are short and only break up air, but don't absorb any noise like resonators and mufflers do.

[babyface]

yea i have to pass emissions, hope when i get the hi flow cat i will pass... becuz i juss did the test a few months ago with the stock and i juss barely passed.



thanks for the info and help.

[starchland]

I would actually have to disagree with fizzbob, in my case when I replaced my stock cat with the Magnaflow high flow unit it got quite a bit louder. experiences will vary.

[rickyduckworth]

I would actually have to disagree with fizzbob, in my case when I replaced my stock cat with the Magnaflow high flow unit it got quite a bit louder. experiences will vary.

then your other cat was partially stopped up. a healthy stock cat flows well and you usually gain very little or no power and lose torque when using the average aftermarket cat.

cats can slowly melt down and block off some of the passageways in the 'honeycomb' and still sound good, but really not be.

i did exhaust work for a few years and pulling the cat shouldn't affect sound much at all. maybe create more high pitched noises but in terms of db output, it's within 3-5db on basically everything.

[starchland]

i didnt notice any gains from my new cat, i just wanted to go all stainless. the stock one looked to be fine as well which kinda sucked. but yeah the sound changed pitch maybe thats why it appears to be louder, either way it kinda sounds annoying at the right ambient temperature.