Question about removing Cats on 87' Rx-7 non-turbo
I own a 87' Rx-7 non-turbo. I also live in a province that require emissions testing. I can get a hot E-Test from someone, but i was wondering about removing the to smaller cats up by the exhaust header and making a pipe that replaces the two cats? Will removing the two small cats and making a straight pipe to fit in place of the cats work for it or will it harm my engine? Or is there a part thats made to do what i'm trying to do out there? if so a links would be great. Also if i get the hot E-Test should i just go with a straight pipe to a silencer then to my muffler?
I'm new to all this so all the help you can give me would be very helpful |
It's not going to harm the engine, but i don't think you'll get much of a performance boost either. You're best bet is to replace the entire setup with a bonez high flow cat from www.rx7.com.
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Originally Posted by Parastie
It's not going to harm the engine, but i don't think you'll get much of a performance boost either. You're best bet is to replace the entire setup with a bonez high flow cat from www.rx7.com.
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Contrare, you guys must have never tried gutting the first two with the OEM setup still installed. You will get a nice seat-of-the-pants boost by doing this, damn near the same as if you pulled the all of the OEM cats & installed the Bonez superflow...
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yeah... ive had both the bonez superflo and the bonez race pipe from rx7.com; if you get the race pipe you will need to start thinking of some form of secondary air injection method, but the superflo i think had enough backpressure to oven the aux ports if i remember. Oh and the race pipe sounds a little ricey'r
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I replaced the two secondary cats with a downpipe from Racingbeat.com.. I had a muffler shop mate that to a high flow cat.. Parts and install were less than the Bonez system.. Not to mention it sounds awsome.. Just another idea to think about.. Good Luck with your choice,
Jimmy |
is the stock cat alone enough to open the aux ports if you dont have the pre cats and a free flowing cat back?
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