Originally Posted by Dave-ROR
maybe you can answer this..
why do people buy a 5" tach for a car that has a 4" tach standard? that's just always confused me.
Dunno about the size deal Dave, I guess that is standard race car prep.
As for the reason to buy the tach, there are 2 good reasons, 1) accuracy (usually OE are off and the ITR is no exception) 2) ability to add a shift light ( which is handy when glancing at the tach is not an option).