Trackday Noise Limits
 

Hi guys,




I have blobeye type uk that i will be using as track day car. The car has a full 3" decat cobra system fitted and its resonated. Im worried about noise levels as i will be travelling to spa and dont want to get told i cant do the day!


I have been looking at the cobra trackday exhaust which is apparantley 97db but this is on a standard car. Does anyone have an expierence with trackdays that have a decatted system, i can only imagine there would be quite a few?
The noise limit for the day is 105db.


Thanks for any input. :thumb:

Well my milltek with custom center and h&s downpipe all 3" is 86db at 4K

My Milltek comes in at 87dB at Bedford track. A mate with a 'track friendly' Cobra system came close to the limit with 100dB, he wasn't impressed. Both were decatted btw.

milltek FTW :)

I was at Caldwell today my ,1997 jdm sti decat back to small back box at 5300rpm was 97 db.

thats exactly what i wanted to here, thank you guys :thumb:

next question is will a catback milltek fit onto a cobra 3" downpipe? :wonder:

also they list 2.75 inch pipe diameter, do you need to contact to get a true 3"?

thanks

I doupt it as milltek are a funny length size as they want you to buy their kit, hence I opted for a custom center pipe.
You could try it, but it may need flange spacers which is not really ideal but will work.

thanks for the reply i have edited my reply, do you know this by any chance?

also they list 2.75 inch pipe diameter, do you need to contact to get a true 3"?

Them are the 2 only sizes milltek do, 2.75 or 3" if not listed, contact them and ask.
2fast2cool on eBay are suppliers of milltek iirc as that's where I bought mine for previous car

thank you for your help :thumb: