Re-Calibrate your tach!!

anybody know how to do this, mine is no longer accurate after I did my swap. Has anyone experienced this after thier swap. I had to rely on my timing light for accurate readings during tuning. after it warms-up, the needle sits all the way at the bottom, iam prolly 500rpm off or so. I have looked for another Si cluster(88-89) to no avail. iam also not sure it will behave the same way.I really dont want an aftermarket tach or one from a 90-91, so any helpful suggestions would be kool.

Stock Tachs are just notoriously inaccurate.

so any other suggestions besides aftermarket tach. why are they so inaccurate anyway?

so any other suggestions besides aftermarket tach. why are they so inaccurate anyway?


not really, factory tachs use a coil spring and tension to determine the rpms from the tach cable. after 100k or so miles and the coil springs lose their tension. aftermarket tachs pick a signal off the ignition.

hope that helps

i have a 88 89 cluster sitting around.. I live in MN and could ship if you want.. PM me if you're interested.


Also... honda tachs are electronic.. i've never actually seen a cable operated tach.

i have no idea why yours would be off besides a different signal from the ecu.

do'h woops I reversed the speedo and the tack sorry ;)

does anyone actually have an accurate tach with thier hybrid motor?? if so, is your car a sub 100k mileage car??

the swap should not have effeccted your tach at all. check your wiring.

my wiring is perfect, didnt even mess with the cluster. I mean, the tach does work, just -500 inaccurate. i'm getting used to it but its a pain when trying to tune the car, and just doesnt look right!