straight pipe or High flow cat? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 03-27-2007, 11:48 PM   #21
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if your car has to pass some sort of emissions than leave the cat but if not get out the hacksaw
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Old 03-28-2007, 12:36 AM   #22
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+1 on test pipes.
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Old 03-28-2007, 03:26 AM   #23
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I have one of the ebay ones that look like a cat but really are just a resonator. The car is a little quiter with it compared to the cat. And it was nice throwing flames at my last autox.
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Old 03-28-2007, 05:16 AM   #24
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Do what i'm going to do.


2.5 turbo back with a resignator.
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Old 03-29-2007, 10:57 PM   #25
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[QUOTE=mschlang;96147]Even thought the inspection is biennial, you can still be cited by the police during a roadside stop. Not very likely, but something to keep in mind.




You're joking, right? No cop is gonna look under your car to see if you have a cat, least of all trying to look under a Miata. And how many LEO's would even know what one looked like?
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Old 03-29-2007, 11:07 PM   #26
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for those of you with the test pipe, how does the car sound? I know it makes a difference on what kind of muffler you have but i don't want to sound rice.
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Old 03-30-2007, 12:44 AM   #27
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[QUOTE=2Zooms!;97219]
Quote:
Originally Posted by mschlang View Post
Even thought the inspection is biennial, you can still be cited by the police during a roadside stop. Not very likely, but something to keep in mind.




You're joking, right? No cop is gonna look under your car to see if you have a cat, least of all trying to look under a Miata. And how many LEO's would even know what one looked like?

Actually in Fairfax and Newport News VA there have been reports of cops checking for cats. They have mirrors on the end of sticks they use to check. Usually it done to add on tickets after you are allready stopped.
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Old 03-30-2007, 11:28 AM   #28
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Wow, talk about Getaspo.....like they don't have real crime to be concerned with? But then again its mostly about generating revenue......
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Old 03-30-2007, 03:37 PM   #29
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Cat. Is it really worth it. You can have power and be clean also.

My old car made plenty of power and then at Inspection time it use to shock the techs as my car with turbo, ecu, 2.5 exhaust, large injectors would be cleaner that 95% of the cars that came through. I has so little pollutants. I love nature
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Old 03-30-2007, 03:42 PM   #30
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[QUOTE=shuiend;97267]
Quote:
Originally Posted by 2Zooms! View Post


Actually in Fairfax and Newport News VA there have been reports of cops checking for cats. They have mirrors on the end of sticks they use to check. Usually it done to add on tickets after you are allready stopped.
in texas they will have mobile sniffer stations on freeway onramps some times
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Old 12-06-2010, 09:50 PM   #31
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ok, here's my issue .... I have this http://www.racingmazda.com/images/GReddyDP-002.jpg

Going into this http://www.autoaccessoriesgarage.com...zda-Miata-1991

via the stock cat. It has a big obstacle because the pipe diamemters are way different including the wholes in the flanges.

I saw a couple of what they list as high flow cats but the flanges are still something like 2 iches. Guess they have less core to make them flow more but the flange is still small.

What I need is a large pipe and flange on the cat going to a large pipe and flange on the cat back.

If it weren't for the fact that I want to keep the exhaust "legal" (with a cat) I'd try to have someone make me a pipe that just blends the two diameters betwenn- DP and Monza Pacesetter

Any ideas for economical cat and cat back system so I can eliminate that step down.

Thanks.
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Old 12-06-2010, 10:16 PM   #32
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Zombie thread! Back from the dead!
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Old 12-06-2010, 11:54 PM   #33
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Quote:
Originally Posted by pitlab77 View Post

in texas they will have mobile sniffer stations on freeway onramps some times
Wait, what!?!?!?
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Old 12-07-2010, 12:02 AM   #34
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Maybe in Houston but I have not seen that here.
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Old 12-07-2010, 12:05 AM   #35
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Its not something I've ever seen here in Houston. Only thing I've seen on onramps are those black boxes with something that looks like a black water hose laying across the road. I think those are simply counters for traffic monitoring.
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Old 12-07-2010, 12:09 AM   #36
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^^^ We've got those in Colorado, especially in the Denver area.

Poobs, you'll probably need to pick up something like this and have flanges welded on to get something larger than 2".
http://cgi.ebay.com/ebaymotors/Magna...Q5fAccessories
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Old 12-07-2010, 12:15 AM   #37
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Quote:
Originally Posted by poobs View Post
Any ideas for economical cat and cat back system so I can eliminate that step down.
Since TurboTony hasn't been around lately, I'd suggest a call to Enthuza. Jason's a good dude, his stuff is reasonably priced, and semi-custom fitments are not a major ordeal.


Sidebar: I remember when Monza exhausts were popular with the air-cooled VW set. Back then, at least, they weren't exactly top-shelf hardware, but if you want to meet a bunch of folks who are even bigger tightwads than Miata owners, go to one of their meets.
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Old 12-07-2010, 04:01 AM   #38
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Quote:
Originally Posted by Chiburbian View Post
Zombie thread! Back from the dead!
poobs always does that. I have to give him credit they are always relevant to the original topic.
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Old 12-07-2010, 09:01 AM   #39
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Quote:
Originally Posted by r808 View Post
poobs always does that. I have to give him credit they are always relevant to the original topic.
I have trouble reading the dates -the numbers are too largefor me
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Old 12-07-2010, 09:03 AM   #40
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Quote:
Originally Posted by matthewdesigns View Post
^^^ We've got those in Colorado, especially in the Denver area.

Poobs, you'll probably need to pick up something like this and have flanges welded on to get something larger than 2".
http://cgi.ebay.com/ebaymotors/Magna...Q5fAccessories
Good idea !
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