I don’t want to get caught out at a trackday with the increasing volume of my standard exhaust, so have plumped for my own meter.
This is the cheapest one I could find with a max/hold setting - http://www.nicksheppard-electronics.co.uk/sound_level.htm
I ordered the digital one today and they’ve put it in the post the same day. I’ll let you know how I get on.
Ian
Even cheaper, if you have one of the new cellphones, that have the nice ringtones, be aware that many of them include now a db meter I have one of the new Nokias and it has one, also a lap timer! Uldis
It also dances the tango, makes an excellent egg sandwich, and confuses police radar traps by turning on blue flashing lights and a siren !!!