Anyone running a Borla Spec miata exhaust with muffler? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 10-08-2015, 10:52 AM   #21
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I am ready to order the RB system, do you guys know if the cat delete pipe is also 2.375" I saw that Emilio is running the mazdacomp cat delete pipe and I wonder why?
I dont want a 2" bottle neck.
Thanks
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Old 10-08-2015, 11:53 AM   #22
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Mazdacomp is 2.5" and nicely priced.
Pretty sure the RB maintains the 2 3/8" diameter.

And is a bit more expensive.

I'd grab up a Mazdacomp pipe if I were you. Especially with your boost.
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Old 10-08-2015, 12:46 PM   #23
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Quote:
Originally Posted by SchmoozerJoe View Post
Mazdacomp is 2.5" and nicely priced.
Pretty sure the RB maintains the 2 3/8" diameter.

And is a bit more expensive.

I'd grab up a Mazdacomp pipe if I were you. Especially with your boost.
I just ordered a complete RB setup with the rb cat delete pipe. $599 shipped from racing beat. I don't have turbo anymore just a vvt na swap now. Thanks for all your opinions.
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Old 10-08-2015, 01:41 PM   #24
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Quote:
Originally Posted by SchmoozerJoe View Post
Mazdacomp is 2.5" and nicely priced.
Are you sure? Thought that SCCA and NASA limited SM exhaust diameters to 2.25"?
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Old 10-08-2015, 02:50 PM   #25
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Quote:
Originally Posted by hornetball View Post
Are you sure? Thought that SCCA and NASA limited SM exhaust diameters to 2.25"?
You are correct.
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Old 10-10-2015, 02:19 AM   #26
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Originally Posted by Rogue_LE View Post
Robert, I also like to see a pic of the installed spec exhaust.
I won't be by the car for another couple weeks, but I will get a picture for you guys when I am.
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