Thanks for your reply mate, I appreciate what you're saying there, so it's more to do with pedal position then as opposed to actual revs, was beginning to think I had some kinda fault going on here, as the other test I did was to find a quiet road and took my foot off the throttle and let the car coast down to low speed and it just remained displaying No.3 and at no point did it display No.2 but just went to No.1 as I braked to a halt (which I expected) so if this is normal that gives me peace of mind that the ATX is ok and no expensive bills pending!!
Cheers Pete