get a sports exhaust or a cat?

liberty · Post by **liberty** » Tue Sep 09, 2008 9:43 am

hey pepz i cant decide on wat i should get. Which one is better give some advantages and disadvantages so i can make a decision. thanks guys

rob83ke70 · Post by **rob83ke70** » Sun Oct 05, 2008 8:43 pm

what car is it going on? i say get a WELL MADE (translate: probably expensive) exhaust and cat and headers...

but hey, its your pocket!

zuba · Post by **zuba** » Thu Oct 09, 2008 8:01 pm

A cat is only one part of the equation really. A custom made exhaust system (from heads back) that's port matched is yer best bet, but it all depends on how much you want to spend and what you want to achieve.
Of course you have to match it up with an appropriate port matched intake system that flows well, including the right filter. Once again, depends on what you want to achieve and how much you want to spend. Do you want it to be legal? Are you after a "sound" or an increase in performance?

AndrewT · Post by **AndrewT** » Fri Oct 10, 2008 11:13 am

the question doesn't make sense. A "cat" is a catalytic converter which is part of an exhaust system anyway - any exhaust system, including sports ones.

If you get a sports exhaust system you must get a catalytic converter as part of it. Not having one is illegal and damaging to the environment and it is a myth that there are significant benefits to not having one. Obviously not having one reduces restriction in the exhaiust however the reduction is so slight it would barely be noticeable.

This is what I've heard from exhaust shops and performance workshops anyway.

Post by **Alex** » Fri Oct 10, 2008 12:05 pm

i like dogs better.

But yeah, if you want a nice note, go a 2.25inch "cat-back" system. Meaning they replace everything from the headers back. Then get a hi-flow strait thru sports muffler, you'll probably want afew resonators "hotdogs" in the middle otherwise itll be too loud. Should cost about $300-350 for a mild steel item.

Otherwise if youre keen on trying to get performance upgrades get the headers re-done to a tuned variety, i don't see the point tho, dont expect much of a performance increase.

Once you get it done, you may think the cars faster, but itll be very minor, listening to the note makes you think youre going quicker. Your fuel economy might get slightly better too.

oh yeah, the ej22's do sound friggin awesome with the correct system! DOOOO ITT!!!

alex

Matatak · Post by **Matatak** » Fri Oct 10, 2008 6:42 pm

A "Cat-Back" system goes form the Catalytic Converter Backwards alex. hence CAT-Back.

removing the cat in an Ej22 will have NO EFFECT.

a Sports exhaust can have many meanings, i take it as being a catback system with straight-thru muffler and 1 or 2 Resonators.

AndrewT · Post by **AndrewT** » Fri Oct 10, 2008 6:53 pm

Matatak wrote:A "Cat-Back" system goes form the Catalytic Converter Backwards alex. hence CAT-Back.
.

however the cat is usually located as part of the headers in a subaru...

Matatak · Post by **Matatak** » Fri Oct 10, 2008 6:57 pm

AndrewT wrote:however the cat is usually located as part of the headers in a subaru...

no not necassarily

in Bugeyes id say it is. but in a stupid Header design of the nonturbos i wouldnt exactly say it is.

AndrewT · Post by **AndrewT** » Fri Oct 10, 2008 9:37 pm

correct, not necessarily, just usually, otherwise i'd have said it is 100% of the time no matter what

Post by **Alex** » Sat Oct 11, 2008 4:56 am

matatak. Its a ej22, not a ej20 turbo. The cat is located pretty much at the end of the headers u idiot!

You and everyone know exactly what i mean. Stop trying to be a smartarse your whole life!

liberty · Post by **liberty** » Sat Oct 18, 2008 6:11 pm

rob83ke70 wrote:what car is it going on? i say get a WELL MADE (translate: probably expensive) exhaust and cat and headers...

but hey, its your pocket!

um its a Liberty GX

wrx_nut · Post by **wrx_nut** » Tue Oct 21, 2008 9:31 pm

yeh my bro just bought a 94 lib wagon with an ej22 and would like to know whats the best type of exhaust to get put on for a deeper note...

2.5" to a straight through muffler?
2.1/4" to a straight through muff?

cheers

damosbrumby91 · Post by **damosbrumby91** » Thu Nov 13, 2008 11:29 pm

id recomend a 2.1/4 i had a 2.5 on my 97 lib wth the ej22 and i think the 2.5 was just a tad to big def recomend the 2 1/4 sounded good tho ay and had awsome down change backfires