964RS - trakc day noise?

[jamieo]

Any idea on what dB a 964RS outputs?

On mine I have the cat removed and the cup bypass fitted (so only 1 of the silencers). Any idea on what kind of dB range I should expect?

I do have the other silencer, so could fit that if needed (though it's a pain in the ass to do that).

Just looking for a rough idea so I don't waste my money and get turned away from a track day on the day. It is a reasonably noisy car

Cheers,
Jamie

[clubsport]

At a guess from your description 108db.....certainly above the 105db static test for a loud day.......brands seems to let a few of these on from time, but forget bedford, combe, goodwood and probably donny for static test...drive by at 1/2 throttle may be ok

[anonymous-user]

jamieo said:

On mine I have the cat removed and the cup bypass fitted (so only 1 of the silencers). Any idea on what kind of dB range I should expect?

think mines 105ish. i just stick to noisy days at silverstone and donny. the NIMBYS dont silencer her !

[jamieo]

Thanks. 108 wouldn't surprise me, I had complaints from neighbours the day I got it. Then again 6500 revs in an underground carpark doesn't help

I guess the thing to do is to book onto a noisey trackday, so I can get it measured. At least then I'll know what to book on or not to book on.

Maybe I'll get the other silencer on. Yeah it would be a real pity, but I'd rather use the car on the track than restrict myself too much.

Vroooommm.....

J

[Ian964]

Yes, about 105dB with cat bypass and cup pipe. I've got the same, but put the primary back on when I want to do Combe, Bedford etc. With practice, you should be able to swap the exhaust in about 1/2 hour.

[jamieo]

A mate and I did try, but gave up after about 2 hours. The bolts were quite stubbon. Getting them off and putting some fresh ones one would make it a quick job - well worth doing I think.

It may not have helped that we have a few pints of Leffe first...

BTW, a problem I have with my RS is that is it *so* low. The standard scissor jack won't fit under the side (god help me if I have a puncture!) and neither would a low profile trolly jack. We needed to get a trolly jack under the engine to lift it up on it's suspension so a jack could get under the side.

Last week I took if for an MOT and it couldn't even get into the garage to get on the lift! I've had to find another MOT station with a sunken lift!

Funny thing is, I don't normally have a lot of problems with it on the road...

J

[weltmeister]

Jamie
Is yours Guards Red J7**GGT ?? If so its my old one. It was super low with Cup pipe & de-cat

Cheers

Allan

[964RS]

Mine had your set up and was 108db.

No good for static tests - which knackers Oulton Park - so replaced cup pipe with normal silencer.

Now back to 104 static which means my favourite track can stay top of my list....

[jamieo]

Hi Allan - it is! From Paul McLean (GT Classics) - who I knew from his pre-porsche days.

Can you email me at jamie.osh at gmail dot com? Would be good to know a bit more about it.

Cheers,
Jamie

[jamieo]

Hi 964RS, I was thinking of doing Oulton in March - the easytrack RS meet.

So I def need the main silencer back on? Seems like it's going to be worth my while getting it refitted with some easy to get on/off bolts...

Jamie