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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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07-23-2015, 02:57 AM | #1 |
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Header/Overpipe/Frontpipe question
Hi guys,
I'm thinking of changing to this setup HKS (old one where the cat was on the actual header) or similar EL catted header (any suggestions? I live in Aus) Motiv Concept overpipe and High flow cat front pipe. Currently my car is stock with just a greddy intake and the STI axelback. Wondering how loud the car may get if i did this? anyone have a similar setup or videos? most videos i found all have a uncatted part somewhere. I don't mind loud, but I don't it so loud when i'm driving in traffic that I draw unwanted attention. Obviously I dont mind if its loud if im giving it the heavy foot. if not both would the catted header or overpipe/frontpipe upgrade be better? thanks! |
07-23-2015, 03:25 AM | #2 | |
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Quote:
Running header even without a tune wont harm anything but you wont gain much out of it. Those Gready\takeda intakes rearly do need scaling of maf sensor to run well. You would be better getting a cheaper catless header like tomei. gruppe-s or rls there prett well the same either el or uel depending on your sound preference. then putting the money saved to a tune and even leave the overpipe and front pipe stock that way it will be nice sounding no drone and producing more power due tune. |
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07-26-2015, 11:27 PM | #3 |
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thanks steve! sounds good. Would doing the overpipe along with the uncatted headers change much? I'm thinking if I was doing headers I might as well do th e connecting overpipe, leaving the stock front and mid pipes
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07-27-2015, 12:00 AM | #4 | |
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best is header tune e85 frontpipe with high flow cat (you might as well do overpipe at same time) will squeese out another 3 maybe 4 hp or so hp if you already have catless header. its diminishing return after catless header intakes rearly not worth the trouble just do a drop in filter. catbacks for sound rearly. |
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