|
|
|
|
Thread Tools | Display Modes |
|
08-01-2010, 07:42 AM | #1 |
Scooby Newbie
Member#: 71339
Join Date: Sep 2004
Chapter/Region:
International
Location: Victoria, Australia
Vehicle:1995 WRX STi RA 1995 WRX STi LS1 |
Modifying tacho readout
As the title says, does anyone know how you can electronically make the tacho read lower than correct? ie Engine speed is 4000rpm but tacho reads 3000 rpm. I was thinking a resistor I would switch into the circuit or something like that.
Any one have any ideas? |
08-01-2010, 08:16 AM | #2 |
Trust no one
Moderator Member#: 11170
Join Date: Oct 2001
Chapter/Region:
Tri-State
Location: NYC
Vehicle:02 RAV4 MT 15 WRX/11 CRZ |
The tach uses a pulsed waveform generated by the ECU that varies with RPM. You'd have to build a circuit to intercept and modify that signal, not easy at all and far more involved than just a resistor.
|
08-02-2010, 06:05 AM | #3 |
Scooby Newbie
Member#: 71339
Join Date: Sep 2004
Chapter/Region:
International
Location: Victoria, Australia
Vehicle:1995 WRX STi RA 1995 WRX STi LS1 |
Oh well, at least now I know.......
Thanks very much for the response. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
(1) Recommendation on gauges to match OEM look, (2) tacho guage? | f1vlad | Interior & Exterior Modification | 14 | 02-09-2006 01:32 PM |
what wire on 04 wrx for defi tacho | jimtweet | Electrical & Lighting | 0 | 12-23-2005 08:19 AM |
tacho output for v2 sti | KEN WRIGHT | Engine Management & Tuning | 2 | 09-28-2003 04:01 AM |
Removing Tacho, Speedo, Temp and Fuel Needles | silverbetty | Interior & Exterior Modification | 8 | 12-30-2002 09:18 AM |
Need helpt with Pivot TACHO Lamp | WReX_rated | Bay Area Impreza Club Forum -- BAIC | 3 | 06-29-2002 07:23 PM |