Laguna sound with the 718 GT4?
03-15-2021, 02:29 PM
#2
Former Vendor
Following - I've received quite a few requests for sound levels on the GT4/718 4.0 cars with exhausts. I'm curious to see what people are seeing IRL in stock form.
03-16-2021, 02:58 PM
#3
My 981 GT4 with stock factory sport exhaust was too loud and drew a black flag at 93.5db on a 92db day. I've sampled a 718 GT4 on track and doubt that it is any quieter.
Keeping the loud valves closed (they open under full throttle regardless of the console button) with 2 hose clamps around them let me run full throttle past turn 5.
Keeping the loud valves closed (they open under full throttle regardless of the console button) with 2 hose clamps around them let me run full throttle past turn 5.
03-22-2021, 05:55 PM
#4
Update from Laguna - I was there Saturday on a 90 dB day. Low humidity, no clouds.
I had no issues with sound upshifting to 4th after exiting turn 5, and moving to the left of the track while passing the sound booth.
Towards the end of a few sessions, I tried skipping the upshift (while still moving left) and was not black flagged. However, they might not have bothered if it was the end of the session anyway? I did not get a numerical measurement.
This was on my stock 2021 GT4 with PDK. I think it is actually a bit quieter than the 981.
I had no issues with sound upshifting to 4th after exiting turn 5, and moving to the left of the track while passing the sound booth.
Towards the end of a few sessions, I tried skipping the upshift (while still moving left) and was not black flagged. However, they might not have bothered if it was the end of the session anyway? I did not get a numerical measurement.
This was on my stock 2021 GT4 with PDK. I think it is actually a bit quieter than the 981.
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sobiloff (03-23-2021)
03-24-2021, 07:30 PM
#5
Intermediate
I was at Laguna in 3/20 as well with my 718 GT4 manual. Like Tief mentioned upshifting from 3rd to 4th to keep it around 5k rpm kept me safe even when staying right. Pushed it a bit more later in the day and didn't get flagged although I was never higher than 6k.
For what it's worth, many that were flagged said that they had never been flagged previously. The overall vibe was that they are being more strict.
But, I've also heard that an aftermarket geofence solution to close the flaps is nearly ready for the 718. Apparently, the 981 solution does not work in the 718.
For what it's worth, many that were flagged said that they had never been flagged previously. The overall vibe was that they are being more strict.
But, I've also heard that an aftermarket geofence solution to close the flaps is nearly ready for the 718. Apparently, the 981 solution does not work in the 718.
04-05-2021, 11:22 AM
#6
Rennlist Member
Get a Track Nanny...send a message to Tom: tomatlarge@yahoo.com and he will build you one. I had on my 2015 GTS, worked like a charm. My buddy has one on is 2014 Cayman GT3, works like a charm. There is a string on Racing and Drivers Education. Under $500 and about 3 hours in labor on the Cayman...access to the engine compartment is needed, lots of panels need to be popped off.
04-05-2021, 01:15 PM
#7
Thanks for starting this thread.
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I'm currently running akra link and slip-on which I don't think will pass at Laguna. (I can pretty confidently say it won't)
The 718 GT4 is much quieter than the 981, so I'm not surprised to hear that folks are passing in stock form.
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I'm currently running akra link and slip-on which I don't think will pass at Laguna. (I can pretty confidently say it won't)
The 718 GT4 is much quieter than the 981, so I'm not surprised to hear that folks are passing in stock form.