Originally posted by Samson
but how do you know which one is the accurate reading? the aftermarket tach could be the one off 100rpms.
Well I had an Autometer in there at one point and it was showing that the stock tach was off the exact same amount as the tach I have in there now....Honda Tach's are notorious for being slightly off with a higher than actual reading as the rpm's increase... just like Honda Speeometers at high speeds. I believe the theory from others is that the needles are fairly heavy or something along that line... Do a search if you don't believe...
Originally posted by SumAccordGuy94
that'd be my guess...
If you are really starring at the tach while accelerating... you shouldnt be taking off so fast... learn to listen to the motor... not stare at a gauge so you "think" you know what the motor is doing... when in all reality, both the stock and aftermarket tachs COULD be WAY off...
concentrate on the road and your driving, not a stupid gauge...
Well that's an interesting thought... maybe we should all rip out our clusters and just drive by ear....

Sounds like someone has driven a lot of base models with no tach's...
The only time I have really noticed the difference/inaccurate reading on the stock tach is in the 3-4k range because honestly anything higher and my focus IS on the road and not a "stupid gauge"...
The main reason I have the aftermarket tach is because it was a Christmas present from my GF last year.... and the only reason I like having it is because the aftermarket wheel I have is such a small diameter I had to almost crouch down to look at the stock tach... but after noting the inaccuracy it only reassures me...