drewbam

Does anyone have either the GMG center bypass or TPC/Fabspeed side bypasses with valves in the Seattle area? I'd like to hear them live before pulling the trigger if possible. Looking for more sound at low RPM for street driving entertainment.

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Jamie_GT3

How about a dundon/RK headers and muffler setup with valves? Have a group buy right now, and we estimate based off our 996, 997.1, 997.2 and 4.0/4.2L headers you'll get at least 25-30whp. We're in Seattle at Gerber Motorsports or in Gig Harbor...

Tapeworm

If you find someone, I would be interested in hearing it too - I'm in Redmond.

I'm on the fense about altering the car from stock, yes it's a bit quiet under 3,500, but it sounds pretty great after that and I worry about attracting any more attention on my brief bursts to red line - especially at night... I'm also a little cocerned about any potential loss of torque at low rpm which is the typical compromise when playing with the exhaust on a NA car....

MayorAdamWest

If love to see the data on a 991gt3 for that. I find it pretty hard to believe you are finding a magical 7% more power with some exhaust changes.

Jamie_GT3

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These are equal optimized length, stepped headers, flaps to keep it quiet and light weight mufflers. We'll get data together from the dyno on the 991GT3 in the next week to 10 days. Was waiting for the PIWIS2 to arrive to put the car in dyno mode!

tono

I have a full system from Fabspeed I am trying to sell. Includes race headers, side by pass, and mini max flow center section. Send me a pm if interested.

Charles@dundonmotorsports

My 996/997gt3 stuff is well known. The 991 setups are ready to build just been waiting to be able to get to the dyno. The power gain is there and can be felt, just waiting for confirmation.

Most if not all companies make exhaust pieces to be modular with the stock exhaust components, I build one complete system around solid top notch material 321 instead of 304 and around building for HP and not cutting corners to save costs. Some of my setups are louder than some people like but the exhaust note is the best out there.

SmokinGTS

Drew I have a Sharkwerks that you are more than happy to hear on my car. I like this bypass as it has no drone and makes more than enough noise.

seapar

My 991 Gt3 will be going on the dyno with Charles both with stock setup and his custom exhaust. I had this setup at the Ridge October 3rd and there is some video of that. I haven't yet heard it with the flaps installed yet however.

drewbam

Looking forward to the dyno date on the Dundon/RK setup. Would love to hear Seapar's setup when he gets the valves installed.

Ed, would love to hear your Sharkwerks when I come by to talk centerlocks.

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inndee

I'm the lucky one that ended up with kyrocks amazing and perfectly optioned GT3. (Thanks again!) I'm planning on doing a proper write up about doubling the miles on it by driving it back to Seattle via LA, but have been very busy and wanted to wait till I got it to the track. Hence the reason for this post, as I talked him into selling me the GMG bypass he had installed and I'll be at Pacific tomorrow and Sunday afternoon. If you can't make it then, let me know and I'll meet you somewhere. I live in the Mathews Beach area, but I'm also on the Eastside regularly-for sure next week as I have a new set of Cup 2s waiting at Cantrell.

I do have to add, that after reading all the people compare this to the 13 C2S I had for over 2.5 years, the GT3 really is a completely different beast that you have to experience to understand! More about buckets for more than 3k miles over just a couple of days, etc later...

drewbam

Inndee, unfortunately, I won't be at Pacific this weekend. Fortunately, that's because I'm currently on a plane to Austin for USGP.

I live in Alki beach and work in Pioneer Square. Let me know when is a good time to meet up next week. Congrats on your new toy! Say Hi to Colin for me.

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Jamie_GT3

Valves landed today, so Charles should be able to get them into Peter's car before the dyno...