I got the tach working in the cluster, but the aftermarket tach is not moving. Should I try the pullup as well?
I got the tach working in the cluster, but the aftermarket tach is not moving. Should I try the pullup as well?
2005 RCSB 2500HD GMC Sierra DURAMAX LLY
1955 Chevy Truck 1st series, being restored
2002 Mercedes C270 CDI
If the Tach in the gauge cluster (IPC) is functional and accurate, then the parameters in your tune are appropriate. Some aftermarket Tachs will require a pull up circuit - give it a try - can't do any harm if wired correctly.
Regards,
Taz