recalibrating the factory tach
#1
recalibrating the factory tach
I have searched and searched to no avail.
I have HP Tuners and I was wondering if there is any way to recalibrate the factory tach, or at least adjust the responsiveness of the needle? My factory tach is SLOW, and it's off about 200 rpm at idle. Anyone know an easy way to adjust/fix this?
The car is a 98 TA WS6 M6
I have HP Tuners and I was wondering if there is any way to recalibrate the factory tach, or at least adjust the responsiveness of the needle? My factory tach is SLOW, and it's off about 200 rpm at idle. Anyone know an easy way to adjust/fix this?
The car is a 98 TA WS6 M6
#6
TECH Addict
iTrader: (10)
You just need to pull off the needle and move it a little i guess.
The tach from the cluster is NOT programable via the engine controller. It just gets a single signal pulse set from it. So it is just like any other aftermarket tach that just gets a signal and it is supposed to work..
You "Could" change it in the programming to make the down low be right, BUT it will mess up everywhere else. No way around that.
The tach from the cluster is NOT programable via the engine controller. It just gets a single signal pulse set from it. So it is just like any other aftermarket tach that just gets a signal and it is supposed to work..
You "Could" change it in the programming to make the down low be right, BUT it will mess up everywhere else. No way around that.
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#8
TECH Senior Member
iTrader: (4)
The problem is that the cluster is fed its data via a serial link from the PCM. It does not receive the tach signal from a tach wire like an aftermarket gauge does. Thats the main contributor to the lag. Just nature of teh beast. get yourself a shift light and forget about the tach. Itll still lag behind.