Quote Originally Posted by jeffswav View Post
I would say you have a erratic tach. I have the faria gages also, sometimes I get a high reading and I can tap on the dash and it drops back to normal. I would try the 25p Mirage you already have. See what that does then bring the thread back up and post your results. A 23p Mirage may be better to get you in the 54-5500 RPM range. I would look for consistant speeds of 68 to 69 with normal conditions, on a lucky day you may see 70 or 71. Now all we need is some good weather.
Yes we do