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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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10-19-2018, 06:57 AM | #1 |
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Anyone runs aftermarket header with stock catback?
I’ve revert my car back to 100% stock except my ACE header and flex fuel kit. I’ve scheduled to remove those next week. But while driving home from the shop yesterday I kind of the sound of ACE header with the stock catback. Has anyone run aftermarket headers with stock catback? Just curious.
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10-19-2018, 07:07 AM | #2 |
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I remember it being a commonly suggested combo if you wanted a quiet system but an aftermarket header.
Since you like it, why not keep it?
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The Following User Says Thank You to Bonburner For This Useful Post: | stlgrym3 (10-19-2018) |
10-19-2018, 07:12 AM | #3 |
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yep i run ace and flex with the rest stock
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10-19-2018, 07:26 AM | #4 |
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Does removing second cat give some power/response?
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10-19-2018, 07:34 AM | #5 |
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Some. Especially if it's only cat removed. But biggest gains come from catless header+tune, as cat placement in stock header for it to heat up to working temps sooner makes it also more negatively affecting performance. Once one already upgraded header & tune, more gains start to hit diminished returns. Also often many leave 2nd header for emissions purpose instead of going fully catless.
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10-19-2018, 07:51 AM | #6 |
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I did my custom tuning while having the catless header plus flex fuel kit and aftermarket catback. Now the catback is back to stock do I need a tune revision?
Also somewhat unrelated, if i remove the flex fuel kit altogether l while keeping the aftermarket header do I need a tune revision? |
10-19-2018, 09:43 AM | #7 |
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Hey guys with ACE header and stock exhaust...mind posting some video clips for sound?
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10-19-2018, 04:22 PM | #8 |
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The Following User Says Thank You to Irace86.2.0 For This Useful Post: | CSG Mike (10-19-2018) |
10-19-2018, 04:41 PM | #9 |
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The sound of an ACE header with stock catback is nothing special, sounds really close to stock and is almost as quiet as well. I got a little bit more sound with the CSG Touring 86 Competition catback but again, it is not a sophisticated sound.
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10-19-2018, 04:53 PM | #10 |
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Ofh e85 stock exhaust. Sounds like stock to me. Thank God because road noise is loud enough by itself. Last thing I need is drone.
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10-19-2018, 04:56 PM | #11 |
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So it’s perfectly normal to run stock catback with aftermarket header and tunes. That’s great, now my car feels like a sleeper, sounds like stock 86 but has ace header and flex fuel tune.
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The Following User Says Thank You to stlgrym3 For This Useful Post: | CSG Mike (10-19-2018) |
10-19-2018, 05:23 PM | #12 |
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+1 It's fine and probably the best power/volume ratio out there.
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10-19-2018, 05:43 PM | #13 |
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Question is do I need to have to do a tune revision when I switch back onto stock catback while still running ACE header and flex fuel kit?
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10-19-2018, 06:06 PM | #14 |
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Not needed.
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