Exhuast project

CEXT

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what should the diameter be for a universal high-flow cat? I don't plan to mod the rest of the exhaust.
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kshawn

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t

that exhaust looks pretty low, does it drag on things?
Honda Civic 10th gen Exhuast project 20160910_150704
Lowest point for the exhuast is where it's crossing the gas tank. but i haven't had a scraping issue yet.
 
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kshawn

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what should the diameter be for a universal high-flow cat? I don't plan to mod the rest of the exhaust.
From my conversation with RV6 performance. They believe that a high flow will be blown out by the turbo. but they will have a CAT delete option around the beginning of next year
 

CEXT

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But you're replacing a cat with another cat. A high flow cat shouldn't be damaged unless you buy a cheap one that is poorly made. There are much more powerful cars that use high-flows
 


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kshawn

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Honda Civic 10th gen Exhuast project 20160930_104809
This was the email
 

CEXT

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hmmm...every production turbo car in the world comes with a cat, and we have a 1.5L engine. I'm not concerned. I just wanted to know the size.
 

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From my conversation with RV6 performance. They believe that a high flow will be blown out by the turbo. but they will have a CAT delete option around the beginning of next year
The issue is heat, and not all cats are the same. A high flow 200 cell metallic racing cat will not hold up to the increased heat, especially when it is mounted so ridiculously close to the turbo. A OEM ceramic core 3-way catalyst has more heat-resistant material built into it, so it can withstand the heat, but is more restrictive.

That is the problem.

Relocate the cat under the car and it will be fine.
 

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That makes sense. I guess I still need a straightpipe and a high flow cat right after it.
 
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kshawn

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made some changes xD
Honda Civic 10th gen Exhuast project 20170217_144715
Honda Civic 10th gen Exhuast project 20170217_144112
Honda Civic 10th gen Exhuast project 20170217_144103
 


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kshawn

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finally someone with a proper exhaust! not just random fart can hanging at the bottom

any dragging issues yet?
I love it. And haha yah no fart cannons. And no dragging issues yet. I'll get a sound clip tomorrow
 
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kshawn

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Did you get a check engine light after changing your exhaust system?
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