GT4 Tripping noise meters at donnington

[CSLmarson]

Hi all

as mentioned above I had a track day there on Monday and managed to get 3 black flags even with the exhaust valves shut!!!

I was told I was 2db over at around the 100db mark, managed a few more outings by lifting on the strait but then got pulled again.

Are there any after market bolt on devises for the standard tail pipes or a home made mod I can do?

I see fabspeed have bolt on pipes but you have to be running a fabspeed rear box and I don't want to change the standard box.

any help would be appreciated

thanks

[hunter 66]

They do noisy days there .... a fair number of them , I think I made 127 db drive by ..

[n12maser]

This is probably someone on Pistonhead's car:


It was posted on Rennlist where they were all figuring out how to not get thrown off Laguna Seca.....their noise police equivalent of Brands Hatch!

The good news for you is the poster wrote:
"The exhaust was a custom arrangement by Mike Edwards Motorsport near London.

The owner tells me it reduced UK track static test (75% max revs tested at 45 degrees from exhaust outlet at 1 metre distance) to 92db from I guess 101/102db."

[boxsey]

Usually GT4s are OK at Donington (probably famous last words seeing as I'm there soon! )....but you do need to keep away from the wall on the start/finish straight and also avoid having a play with other cars because two cars passing the meter close together will trip it.

I too am interested in a solution as mine didn't last long at Zolder before the noise police stopped play. A quick bolt on would be nice so that it could be done at the track. I believe the one on Ravon's car above takes a while to put on/remove so is a bit more than a simple bolt on job.

[CSLmarson]

thanks for the comments gents,

im at brans next week!

can I expect the same amount of grief regarding noise? I was fine at Snetterton all day with the exhaust open.

looking on the fab speed site there solution is simply some pipe extensions pointing direct down to the ground, the ones above are a serious bit of kit in comparison.

[BubblesNW]

I've got a pair of Decibel Devils which I haven't t needed to use, which is a good job as the clamps need a bit of adjustment and I'm no welder.
I've added the pink ceramic fabric to prevent scratching and help gripping once clamped.



I got them from the motorsports shop at Oulton.

[red997]

try Matt @ Fearnsport

I know he has a bolt of solution for the GT3, and may have something for the GT4

[PGNSagaris]

CSLmarson said:

thanks for the comments gents,

im at brans next week!

can I expect the same amount of grief regarding noise? I was fine at Snetterton all day with the exhaust open.

.

From experience, Brands are worse than Snett

[TDT]

CSLmarson said:

looking on the fab speed site there solution is simply some pipe extensions pointing direct down to the ground, the ones above are a serious bit of kit in comparison.

These are nice and £228… the only issue is you need the rest of the Fabspeed system to mate them to!

https://www.fabspeed.com/porsche-competition-slip-...

[gtsralph]

n12maser said:

This is probably someone on Pistonhead's car:

It was posted on Rennlist where they were all figuring out how to not get thrown off Laguna Seca.....their noise police equivalent of Brands Hatch!

The good news for you is the poster wrote:
"The exhaust was a custom arrangement by Mike Edwards Motorsport near London.

The owner tells me it reduced UK track static test (75% max revs tested at 45 degrees from exhaust outlet at 1 metre distance) to 92db from I guess 101/102db."

Funny to hear one's post on a USA site quoted back.

[Fish]

I tripped Donny in my GT4.. Now have a GT3 and just do loud days now with centre bypass on. The exhaust button will make no real difference after 3000-4000 revs at full throttle as they open anyway.