I went on a track day and the static sound level at 4500 RPM for a car with a redline of 7000 RPM was 101 DB, my car read 89 DB and that was with a standard exhaust system with a H&S back box.

I was planning on getting a full decat and remap but surely that is going to be over 101 DB?

The drive by limit is even lower at 87.5 DB at 20 meters.

What exhaust system are you running and what's the DB?

Thanks

 

Revolution or Miltek will be OK,Cobra Track day exhaust is next option,which is Track day friendly.


Jura

 

Something I am looking at myself.


Steve

 

I didn't know they had to be at a certain noise level for track days.

What is the reason for this?

 

I've got a full decated Afterburner Vortex system and I think I'm on the limit if not over.

Out of interest guys, whats the best way of finding out an accurate DB reading?

 

Does a classic have 1 cat or 2?

Thanks

 

Neighbours of the circuits complain about the noise otherwise.

My Miltek at 5500 rpm is 90db on the static test. I very much doubt my car would pass a drive by noise test though due to the induction noise

 

The Mongoose system on my car consistently reads 89db static at 5500rpm and 84db drive by. Be aware that no matter how careful you are these figures WILL differ from circuit to circuit dependent upon equipment used for testing, individual doing testing, surrounding features, weather conditions, position of jupiters moon's, etc., etc.

Mongoose system available from Scooby Clinic.

 

i have the rcm system on mine.it was 95db at 4500rpm last weekend at the scooby shootout.

 

Full decat with resonator and Prodrive back box. Metered @ 92 db at Japfest. Sorry, that was the static test

 

Would new headers and up pipe make it louder?

Thanks