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All the large Dyno gains exhaust manufacturers have posted have been with the most heavily restricted parts removed, such as the exhaust muffler and the catalytic converters.
The stock exhaust is actually very unrestrictive with a direct exit path with PSE open as proven in this interview with John Gaydos with SOUL Performance.
Crosspost from another thread that I found to be interesting.
Originally Posted by Fabspeed Motorsport
I have Dug up our dyno graph from our pre-post runs with the OAP. As few have mentioned previously, Their is a 5HP bump you will notice on the graph, however, to us this is not a gain because it quickly equalizes. Many Competitors will harp on increases like this but if you cant feel it then we see no reason to brag about it. That being said, We are happy to help in anyway we can or answer questions, after-all transparency is key!
Just wanted to show the similar results between the Gutted OAP and the Fabspeed OAPs is all.
I’m just doing headers on mine with gutted OAP + stock rear section and calling it a day.
Thank you. Because of your post, I did mine too. See pic above. I love the sound. Period. I also think that the response is better too, but it may be in my head. I am going to mate the gutted OAP with the Akra exhaust.
Absolutely; let's do drives next season, with masks and social distancing, of course! :-) And, congratulations on your GTS. It's a keeper as the last NA of the platform since the next gen is gonna be electric!
I've messaged some others on here too, but we will be having a little Porsche Breakfast and Drive in Minnetonka, MN. Please message me for details, I've reached out to a couple of you MN folks, but there are a lot more than I expected! Can't wait to see more Porsche peeps this year!
I did not see your post until after I completed the job, but just measured the removed material on an accurate postal scale at 60.3 oz. A bit likely escaped into the vacuum, but that is pretty close. No more than 64 oz (4lbs) removed.
Hi jfh342. It is good that you took the risq with that temptating solution. Could you give à long term feedback ? Thank you.
I did not see your post until after I completed the job, but just measured the removed material on an accurate postal scale at 60.3 oz. A bit likely escaped into the vacuum, but that is pretty close. No more than 64 oz (4lbs) removed.
01-10-2021, 11:11 PM
