I have a b16 in my crx and my stock tach reads fine but my autometer reads double. So if my stock tachs reads 1000rpms the autometer will read 2000rpms? It is hooked directly to the distributor? Any suggestions?
later
Matt

 

Did you properly set the jumpers? THe distributor connection is to the solid Blue wire-is that what you mean?

 

what jumpers? And yes I hooked it to the blue wire.

later
Matt

 

jumpers to set it to 4,6 or 8 cylinder motor.

 

Yes they cut the two wires to set it to four cylinder? Any other suggestions?

later
Matt

 

my tach currently is off that much also.

b16a1 + pr3 ecu wit stock CRXSi gauge cluster my rpms are off from anywhere 400RPM to 1200RPM difference. the large differences are in the higher rpm ranges also.

but i dont run a aftermarket one. so i dunno.

 

yea mine is a pr3 ecu

later
Matt

 

I got it figured out I followed the four cylinder directions on teh instructions and cut both wire loops but when i called Autometer thhey told me to reconnect the brown wire so I did and now it work fine.
thanks
Matt

 

in the instructions on my autometer tach, it says cut one of thejumpers for 4 cyl 2 pulse or both jumpers for 4 cyl 1 pulse or something like that. i don't have them sitting here with me, so i can't say for sure. i just remember that there's a difference.

 

yea that is what the guy at Autometer told me
all is fine now.
Thanks
Matt

 

You might have had it connected to the crank angle sensor output instead of the coil pulse wire, also. I've seen that done before... The crank moves twice as fast as the cam...