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Old 07-25-2002, 10:11 PM   #1
ciper
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Question Catalytic converter suggestions, no pipes needed.

I tried searching for old posts, and either I would end up with 1000 irrelevant posts or like 10 that only suggest a high flow cat but not what type. Maybe Im not using the right words.

Anyways, my plan is to get the header from tech works engineering a slightly used wrx muffler (with 100 some miles) and a high flow cat plus the expertise of a local exhaust shop to build me up something good.

Im looking for a good high flow cat. Obviously it doesnt need to be subaru specific. Any suggestions? Im not looking for ultimiate wiz bang flow here, this is on an NA 2.2l

Im not cheap but Id like to get a good deal. Thanks for your suggestions.
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Old 07-25-2002, 10:25 PM   #2
yamarocket630
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check out summitracing.com
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Old 07-26-2002, 05:44 AM   #3
HndaTch627
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ciper i've always had good luck with catco cats...in fact i have 2 that are 2 1/2" inch but i had to cut them up pretty bad to get them out. check them out.

jeremy

p.s.: if you live in a emissions state get a 3 way.
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Old 07-26-2002, 07:30 AM   #4
Patrick Olsen
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In addition to the direct-fit hi-flow cat, Random Technology makes all sorts of universal fit cats. Them and Catco are pretty much the two to check out. Oh, and Brullen also makes universal cats.

Pat Olsen
'97 Legacy 2.5GT sedan
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Old 07-26-2002, 02:02 PM   #5
BOY
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Catco absolutely! For under $100 shipped to your door you cant beat them. Don't fall into the brand name game. the Random tech cats are good, don't get me wrong, but not for that much $$.
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Old 07-26-2002, 02:21 PM   #6
wistful
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Tengo un Catco en mi coche. Me gusta mucho!

Don
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Old 07-26-2002, 02:44 PM   #7
ciper
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Miraré catco. Gracias por la sugerencia

HndaTch627: a three way?
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Old 07-26-2002, 03:10 PM   #8
BOY
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3 way, uh oh
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Old 07-26-2002, 04:24 PM   #9
ciper
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Okay, I will probably order this from summit racing. They have so many choices though. The only thing I know for sure is the inlet/outlet diameter. What does length have to do with it? I know I dont need an air pump inlet, but which item should I get? Is bigger better?

edit: Found a cool page! http://www.discountconverter.com/dea...20PRICE%20LIST

I was thinking about model 2605 as shown

2.25 inlet, 2.25 outlet and 16 1/2 inch. Summit has them in stock for 64.39 plus 7.95 handling. Is that good? Is this the right item to choose?

My real question is that tube, is that meant to suck air from the atmosphere or is this intended for a smog pump?

Last edited by ciper; 07-26-2002 at 04:50 PM.
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Old 07-27-2002, 05:36 AM   #10
HndaTch627
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that's the right item...the reason you need a three way is because our cars have no EGR system to control NOx production, therefore you need a catalyst that is Platnium, Palladium, and Rhodium(the Rhodium stores oxygen on decelleration)...and if you like in a pollution controlled state they will soon START monitor NOx output of vehicles because to be honest, it's more deadly then carbon monoxide(caused by a faulty catalyst)....you are going to have the AIR tube access port but it just stays capped. the 2 1/4" will provide good flow w/o robbing too much top end and to be honest i don't think you'd even see a P0420(catalyst effiency) code with a 2 1/4. Good luck ciper.

FWIW the stock cats are just in 2 halves, not 2 cats, first takes care of HC and CO, the second AFAIK controls the NOx output.

GOod luck

jeremy
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