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Registered
Join Date: Oct 2012
Location: Southern Cal
Posts: 111
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981 S performance exhaust
Can anyone give me their opinion on the best performance exhaust available for the 981 S. I have switched to the Boxster after 50 years of 911 ownership. So I am not familiar with performance upgrades for the 981 cars. I would prefer something aggressive yet civil, if that's possible. Can any of you 981 owners refer me to any good Boxster discussion sites
Many thanks |
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10-13-2021, 08:10 AM
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Join Date: Aug 2010
Location: Earth.............
Posts: 2,875
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The one it came with. Most aftermarket systems cost a fortune, either don't improve power output or even lose some, and many make horrific droning noises; regardless of what their advertisement's claim...
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Accrochez-vous bien de vos rêves..........." |
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10-13-2021, 08:28 AM
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Join Date: Aug 2005
Location: Maryland
Posts: 122
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I tend to agree with JFP but there is some vigorous discussion of this on the Rennlist 981 forum. FWIW I bought my 2013 used and it had a Soul Performance system. I replaced it with a factory unit which I like much better (bear in mind I am getting a bit older :/ and found the Soul system a bit loud).
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10-17-2021, 04:43 PM
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Interesting. Do any of the folks in the “vigorous” discussion have any data to bring to the table?
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Tom Coradeschi 03 Boxster |
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10-18-2021, 03:11 AM
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Occasional User
Join Date: Sep 2013
Location: Alberta
Posts: 1,023
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I think the best value is a Carnewal exhaust mod by Cantrell Motorsports.
You send them your cat back exhaust, they mod and send it back to you. But - as others have mentioned, you may lose power - possibly at the low end. I replaced my stock 2009 Cayman S exhaust with a Carnewal modified Cayman R exhaust and it did feel like I lost some low end torque. Fixed the sound problem though. It sounded great. Full throttle was thing of beauty. It was a PDK car and back then they did not have the sound symposer - piped in sound that the 981 has.
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Vince 2015 Boxster S, Black & Black 1989 Carrera Silver Coupe, Silk Grey - sold 2009 Cayman S White, Full Cocoa - sold 1972 911E Silver Coupe, Pepita & Black - sold |
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11-21-2021, 01:17 PM
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Join Date: Aug 2005
Location: Maryland
Posts: 122
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Jim, I switched to a Boxster after 20 years of air-cooled 911 ownership, so can relate. I bought my Boxster used and it had a Soul Performance exhaust on it (original exhaust included in the sale). The Soul unit brought no performance gain and, as somebody said, added a real drone at certain RPMs, so I put the original back on. I like the quiet growl of the original and was able to sell the Soul.
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11-22-2021, 04:27 PM
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Reiver
Join Date: Nov 2011
Posts: 57,282
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SOUL/APR will tell you that a cat back system will not add power....it is for sound only and possibly a bit lighter in the ass. If you want a performance exhaust you will have to go with a non compliant (in some states) freer flowing cat or a cat delete/downpipe and then you are talking a non street system.
APR has done serious testing on the stock cat (718) and found it is so good going to a free flow adds nothing...so we are back again to noise. On a non turbo there can be gains from a system but that needs professional tuning and some dyno time and you will again be in that gray area of passing emissions. The stock systems really are very good....
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De Oppresso Liber Strength and Honor 5th Legion Last edited by Reiver; 11-22-2021 at 04:38 PM.. |
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11-22-2021, 04:33 PM
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