Do you need a Tacho for the SVA, i know the check the dBA when at 4000rpm but is it a legal requireent?

i would say not. many road cars have no rev meter, plus they often use the clip on the HT lead to determin revs anyway. im not going to have one...

interesting - so with my wasted spark system he'll think my engines going twice as fast as it is - esp if I recalibrate the tacho - - - - - - Excellent...
Bob C

but dont take my word for it...

At Beverley they supply thier own...