2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Turbo 2 replacement cats?

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Old May 1, 2024 | 09:17 PM
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Turbo 2 replacement cats?

Anyone know where to get Turbo 2 replacement Cats?
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Old May 2, 2024 | 06:21 AM
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Don't believe anyone would want OEM parts if they can be found.
The front converter $2931 and rear $5619, nuts.
Delete the front converter with a DP, and replace the rear with an aftermarket unit.



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Old May 2, 2024 | 08:31 AM
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I've been using Bonez cats for the last 20+ years on my S5. Here's a link to a site that sells them: https://www.rx7.com/store/rx7/fcexhaust.html#Turbo2
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Old May 2, 2024 | 08:45 AM
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Originally Posted by Hot_Dog
I've been using Bonez cats for the last 20+ years on my S5. Here's a link to a site that sells them: https://www.rx7.com/store/rx7/fcexhaust.html#Turbo2
I also used the Bonez cat, no problem, then took it off when I put the OEM cat back on.
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Old May 2, 2024 | 11:44 AM
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Originally Posted by Hot_Dog
I've been using Bonez cats for the last 20+ years on my S5. Here's a link to a site that sells them: https://www.rx7.com/store/rx7/fcexhaust.html#Turbo2

Does the NA and Turbo FC use the same cats??
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Old May 2, 2024 | 11:49 AM
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Originally Posted by Hot_Dog
I've been using Bonez cats for the last 20+ years on my S5. Here's a link to a site that sells them: https://www.rx7.com/store/rx7/fcexhaust.html#Turbo2
Are they still in business? Website looks very dated and I tried calling but went to a (functioning) Voicemail
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Old May 2, 2024 | 02:53 PM
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Originally Posted by C S
Are they still in business? Website looks very dated and I tried calling but went to a (functioning) Voicemail
IDK, I haven't bought from them in a while. I Googled rx7.com and came across a few comments from folks having problems contacting them. Somebody mentioned that Ari was in the process of moving their shop.
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Old May 2, 2024 | 03:44 PM
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Originally Posted by Hot_Dog
IDK, I haven't bought from them in a while. I Googled rx7.com and came across a few comments from folks having problems contacting them. Somebody mentioned that Ari was in the process of moving their shop.
do you know if na and turbo use the same cats
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Old May 2, 2024 | 03:57 PM
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Originally Posted by C S
Does the NA and Turbo FC use the same cats??
The rx7.com website lists the TII main cat p/n as EX800622. The rx7.com website lists the N/A main cat p/n as EX800655. Different p/n's, so apparently they are different.
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Old May 2, 2024 | 07:04 PM
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OEM part numbers are different also.
Magnaflo lists the same part numbers for both (rear) for Federal.
Rock Auto also lists the same part numbers for both (rear).

Last edited by Turbonut; May 2, 2024 at 07:08 PM.
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Old May 2, 2024 | 08:43 PM
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Originally Posted by Turbonut
OEM part numbers are different also.
Magnaflo lists the same part numbers for both (rear) for Federal.
Rock Auto also lists the same part numbers for both (rear).
I tried finding replacement cats the main one and the elbow looking one I can’t even find generic
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Old May 3, 2024 | 05:20 AM
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Just an example, check Rock Auto Davico 15040
https://www.rockauto.com/info/787/15040.jpg
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Old May 3, 2024 | 09:44 AM
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Maybe try searching the manufacturer's websites:
https://www.magnaflow.com/collection...tic-converters
https://davicomfg.com/catalog/
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Old May 3, 2024 | 10:29 AM
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Originally Posted by Turbonut
OEM part numbers are different also.
Magnaflo lists the same part numbers for both (rear) for Federal.
Rock Auto also lists the same part numbers for both (rear).
I like RockAuto but I don't fully trust their part numbering when it comes to N/A and turbo parts for our cars. I bought a Y-pipe for my car from them once. I had the turbo model selected thinking it would be for a turbo car. When I got it the pipe sizing was not correct for a turbo car. At least not according to Racing Beat's description of their Y-pipe. Pipe dia. should be 2.5" before the split. The one from RockAuto was like 2 or 2.25 with piping after the split being less than 2". So I'm pretty sure they based it from the N/A and just sold the same part for both models. I suspect they are doing the same for cats. The question is which model N/A or Turbo did they use to base the part off of.

Last edited by Dak; May 3, 2024 at 10:30 AM. Reason: Spelling
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Old May 3, 2024 | 12:13 PM
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From: https://www2.mazda.com/en/100th/
Originally Posted by C S
I tried finding replacement cats the main one and the elbow looking one I can’t even find generic
you're the only person who has tried to buy one voluntarily
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Old May 3, 2024 | 03:05 PM
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Yes, I cannot find the elbow shaped pre cat for some reason
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Old May 3, 2024 | 05:00 PM
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Originally Posted by C S
Yes, I cannot find the elbow shaped pre cat for some reason
I wouldn't even look for a precat as they are nonexistent in aftermarket and new OEM is thousands.
I still have the OEM unit in the garage, but it's staying there just like all the other parts I've hoarded
over the years.
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Old May 11, 2024 | 03:08 PM
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I have a good cat and precat from my S5 turbo if interested.
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Old May 11, 2024 | 04:54 PM
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Originally Posted by re-rx7
I have a good cat and precat from my S5 turbo if interested.
can you post pics
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Old May 13, 2024 | 07:38 AM
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Originally Posted by C S
can you post pics
PM me
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Old May 13, 2024 | 08:33 PM
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Originally Posted by re-rx7
PM me
ok I will, but isn’t the s5 cat different?
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