I've just notice that the noise level for no pro class entries is 103db.

My car has a Revolution downpipe and Nur Spec R fitted. Thats never going to pass without the bung in, is it?

 

It also says it is measured at 1m from the exhaust tailpipe. Is this correct?? The MSA guidelines state 0.5m from the tailpipe.....

Just checking as it will make a difference

 

Micky, no chance mate....a toilet bowl with a nur spec R fitted would fail a flush test at 103db.

 

Would it pass with the bung in? Then sneakily remove it?
Tis not fair that the pro lot get a higher DB

 

erm, this is a static test not a drive by at WOT they tested in the middle of the handling circuit last year as to avoid any surrounding noise interfering, mine was around 90 if i remember correctly and that's not exactly quiet, have a look at this exhaust test a mag did, gives dbs for idle etc. Toyota Celica Exhaust Test - Tech Review - Turbo Magazine going to be slightly different for an Impreza but should give a ballpark

 

it should read 0.5m @ 45 degrees to be fair, will ask Shaun to ammend, and yes it is a static test.
Anyone unsure of their cars noise limit can have a FREE noise test at Elvington rwyb with Straightliners on 11th March (this is a 1/4m rwyb day if you wish to practise, cost £45 approx on day, open to anyone).

 

Re: static tests. Mine with a Blitz+resonator+bung =

4000RPM:
100.1
100.8
102.2

4500RPM
102.4
102.2
102.1

5000RPM
105.5
104.9
105.0

 

Oh dear, mine was 107db @ elvington.

Best put me prodrive box back on for this.

 

I was 103.1db at 4500 with no bung.

 

Spot-on eh!

 

Anyone know how loud the 3" RCM system is

 

tyson, ask alan bell

 

Ok mate will do

 

You got the rcm 3'' then , good man

 

Yes with resonator just incase its to loud