TRD Exhaust and Aero - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

wootwoot · 03-18-2013, 06:38 PM

Does anyone know if the TRD exhaust system (oval tips, not quad tip) maintains the stock aerodynamics? I am wanting an aftermarket exhaust, I just don't want my rear end to start lifting on the track. So far Borla is the only company that is producing a diffuser for their exhaust and I am not yet convinced of their quality.

MTCRX · 03-18-2013, 10:55 PM

I have the USDM TRD exhaust. I haven't been on the track yet, but at spirited highway speeds the rear of the car feels well planted and stable. I do have trd spoiler and just added the OEM like diffuser. I did see a diffuser that mounts on the TRD exhaust on this website, maybe Carson Toyota or Nigel-JDM?

wootwoot · 03-18-2013, 11:56 PM

I think the diffuser will only work with the quad tip TRD exhaust. I'm not all that into it myself. I would only get it for the diffuser. But thanks for the info. Glad you are happy with yours.

husker741 · 03-19-2013, 12:13 AM

Exhausts like the FT86SpeedFactory V1 have a muffler that looks very similar to the stock muffler. I would think the aftermarket exhausts that have 2 mufflers really mess with the aero more than others, but the ones that are a big single muffler don't look like they'd effect the aero too much.

03-18-2013, 06:38 PM	#1
wootwoot Senior Member Join Date: Jul 2012 Drives: FRS Location: Cali Posts: 1,558 Thanks: 188 Thanked 462 Times in 264 Posts Mentioned: 9 Post(s)	TRD Exhaust and Aero Does anyone know if the TRD exhaust system (oval tips, not quad tip) maintains the stock aerodynamics? I am wanting an aftermarket exhaust, I just don't want my rear end to start lifting on the track. So far Borla is the only company that is producing a diffuser for their exhaust and I am not yet convinced of their quality.

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03-18-2013, 10:55 PM	#2
MTCRX Senior Member Join Date: Nov 2012 Drives: Whiteout FRS- autocross ready Location: Montana Posts: 283 Thanks: 136 Thanked 109 Times in 68 Posts Mentioned: 0 Post(s)	I have the USDM TRD exhaust. I haven't been on the track yet, but at spirited highway speeds the rear of the car feels well planted and stable. I do have trd spoiler and just added the OEM like diffuser. I did see a diffuser that mounts on the TRD exhaust on this website, maybe Carson Toyota or Nigel-JDM?

03-18-2013, 11:56 PM	#3
wootwoot Senior Member Join Date: Jul 2012 Drives: FRS Location: Cali Posts: 1,558 Thanks: 188 Thanked 462 Times in 264 Posts Mentioned: 9 Post(s)	I think the diffuser will only work with the quad tip TRD exhaust. I'm not all that into it myself. I would only get it for the diffuser. But thanks for the info. Glad you are happy with yours.

03-19-2013, 12:13 AM	#4
husker741 Banned Join Date: Feb 2013 Drives: 2013 Whiteout Scion FR-S 6MT Location: Gainesville, FL Posts: 3,272 Thanks: 1,278 Thanked 4,183 Times in 1,415 Posts Mentioned: 28 Post(s)	Exhausts like the FT86SpeedFactory V1 have a muffler that looks very similar to the stock muffler. I would think the aftermarket exhausts that have 2 mufflers really mess with the aero more than others, but the ones that are a big single muffler don't look like they'd effect the aero too much.

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