Hi all,

I'm sure this has been covered before but i couldnt find anything.

As certain tests (noise springs to mind) require holding the engine at a set number of revs, is its required to have a rev counter??

I've always assumed it wasnt needed, but now i'm not sure.

No, they will measure it using separate equipment (the emissions machine usually) if you don't have a tacho.

as above they'll have their own equipment

Thanks! Very helpful as usual.