New 3" X pipe exhaust
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Perhaps. Our Audi RS4 2.75" exhaust does not drone much at all, if any. Perhaps doing one for the Porsche's but I rather not at this time. I'm happy with my 3" I rather keep spending time in development into my aero parts.
Btw John. My exhaust showed 25awhp and 19awtq gain over a milltec exhaust with 100 cell cats while my exhaust had 200 cell cats.
Btw John. My exhaust showed 25awhp and 19awtq gain over a milltec exhaust with 100 cell cats while my exhaust had 200 cell cats.
I still do like your X- pipe merge design the best..
I just dont want something that loud and that drone ..
.. But IF I go to 3071 turbos ,I will need it to get a bigger exhaust..Also I wonder how a stepped pipe would work for keeping the drone down because that would be great for velocity while still being somewhat less restrictive....Perhaps a 2.5 to 2.75 to 3'' for drone concerns..[/QUOTE]
It was on a 100% bone stock 997 Turbo. pm your email and i will forward you the graphs.
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Perhaps. Our Audi RS4 2.75" exhaust does not drone much at all, if any. Perhaps doing one for the Porsche's but I rather not at this time. I'm happy with my 3" I rather keep spending time in development into my aero parts.
Btw John. My exhaust showed 25awhp and 19awtq gain over a milltec exhaust with 100 cell cats while my exhaust had 200 cell cats.
Btw John. My exhaust showed 25awhp and 19awtq gain over a milltec exhaust with 100 cell cats while my exhaust had 200 cell cats.
I also did an Rs4, and there was no drone at all. Car was
loud, but inside it was all good. Just one of those easy cars I think, like Subarus. You can put just about anything on them and it just works.
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Yea the video couldn't pick up the drone. You can hear my buddy and I discussing it when it's at its loudest. It's just a very specific frequency that's hard to record (which is probably why videos of other exhausts also make it seem like drone isn't an issue). So if we can address it, the exhaust will actually be pretty quiet in the cabin.
But, as you can tell the exhaust sounds sooo good outside the car. And WOT is pure sex. If I wasn't such a perfectionist I'd just keep the revs above 3000 rpm and call it a day. But I'd like address the issue instead of just driving around it or throwing mufflers at it
But, as you can tell the exhaust sounds sooo good outside the car. And WOT is pure sex. If I wasn't such a perfectionist I'd just keep the revs above 3000 rpm and call it a day. But I'd like address the issue instead of just driving around it or throwing mufflers at it
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Yea the video couldn't pick up the drone. You can hear my buddy and I discussing it when it's at its loudest. It's just a very specific frequency that's hard to record (which is probably why videos of other exhausts also make it seem like drone isn't an issue). So if we can address it, the exhaust will actually be pretty quiet in the cabin.
But, as you can tell the exhaust sounds sooo good outside the car. And WOT is pure sex. If I wasn't such a perfectionist I'd just keep the revs above 3000 rpm and call it a day. But I'd like address the issue instead of just driving around it or throwing mufflers at it
But, as you can tell the exhaust sounds sooo good outside the car. And WOT is pure sex. If I wasn't such a perfectionist I'd just keep the revs above 3000 rpm and call it a day. But I'd like address the issue instead of just driving around it or throwing mufflers at it
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Hopefully an update on the way. Used science and he is pretty happy with it.
Going to tweak the look, but it is likely this is a "cake and eat it too" deal.
Drove the exhaust this time before sending it out, and wow, these cars sound so good WOT with a rowdy exhaust.
Going to tweak the look, but it is likely this is a "cake and eat it too" deal.
Drove the exhaust this time before sending it out, and wow, these cars sound so good WOT with a rowdy exhaust.
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I've got a big update coming :-)
For inquiring minds: The exhaust is simply amazing. Chris has managed to completely eliminate the drone but keep the straight through 3" design and the aggressive sound. In other words, it is perfect.
For inquiring minds: The exhaust is simply amazing. Chris has managed to completely eliminate the drone but keep the straight through 3" design and the aggressive sound. In other words, it is perfect.
Last edited by Dr. Jekyll; Sep 11, 2013 at 09:41 PM.
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Catless. It's a really nice treat inside and out.
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The exhaust is catless.
