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2014 Mazda 3 i Touring 6MT 2.0L
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Discussion Starter · #1 ·
Anyone hear of this header (TRR)? Just curious-personally still waiting for one with extensive R&D, but from what is under the exhaust wrap, it seems to be a true 4-2-1.




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What terrible choice of music. Instantly killed off many potential customers. Idiots.


Regarding the header... I don't understand what the big deal is anyway. The factory unit is designed good. All that's needed is to remove the CAT and make it a nice smooth flow without the idiotic curve / bends. Keep the original runner lenth, design, etc just make it straight and without restrictions like a Honda K series header.

 

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2014 Mazda 3 i Touring 6MT 2.0L
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Discussion Starter · #3 ·
What terrible choice of music. Instantly killed off many potential customers. Idiots.


Regarding the header... I don't understand what the big deal is anyway. The factory unit is designed good. All that's needed is to remove the CAT and make it a nice smooth flow without the idiotic curve / bends. Keep the original runner lenth, design, etc just make it straight and without restrictions like a Honda K series header.



Yea, I agree, listened without music until the very end-I haven’t measured and figured as much with regards to header design-I wonder if Matt from OVT has removed the cat and what gains he saw


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CATs are naturally very restrictive, especially whatever they put in to make the engine ULEV. I suspect that even simply removing it and keeping the same stock snake design will show gains. Obviously exhaust flow will be faster.
 

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Discussion Starter · #5 ·
I did however do a thing and got one of the few discontinued Ovt octopus 4-2-1 headers (early Christmas....)



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Discussion Starter · #6 ·
CATs are naturally very restrictive, especially whatever they put in to make the engine ULEV. I suspect that even simply removing it and keeping the same stock snake design will show gains. Obviously exhaust flow will be faster.


Has the same flow pattern as stock or near stock to promote lower and more even torque gains


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Discussion Starter · #7 ·
Video in the header/exhaust thread



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I did however do a thing and got one of the few discontinued Ovt octopus 4-2-1 headers (early Christmas....)



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Upgraded headers and cams (stage 1 and 2) exist.
CK
 
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