Folks
I have the EJ25 engine in my Brumby ute and wanted to add a tacho.
Can anyone give me a heads up on how to do it.
I will run a tacho that has only 3 wires
red - power
black - earth
and a green which is sposed to be the "trigger" or pulse to make it work
Where do I put the trigger
Australian Liberty Owners Club
Tacho addition
6 posts
• Page 1 of 1
Tacho addition
by ozbrumby » Sun Jan 05, 2014 11:43 am
- ozbrumby
- Posts: 12
- Joined: Fri Oct 04, 2013 7:22 pm
- Car: Brumby with 2.5 driveline
Re: Tacho addition
by jaydece » Sun Jan 05, 2014 7:12 pm
ozbrumby wrote:Folks
I have the EJ25 engine in my Brumby ute and wanted to add a tacho.
Can anyone give me a heads up on how to do it.
I will run a tacho that has only 3 wires
red - power
black - earth
and a green which is sposed to be the "trigger" or pulse to make it work
Where do I put the trigger
what ecu are you using? ej25? aftermarket? I tapped my rpm signal from my dash cluster, but that signal is also connected to the ECU module.
from memory its a square wave signal? 5v or 12v? cant remember exactly...
what brand tacho you running? some brands require a certain value resistor in line with the signal and tacho...
~JUSZTN~
** Our Turbo Lag Gives Those v8's A Chance **
History - MY07 Liberty TBSTI 6SPD Sedan
265kw atw on P100
290kw atw on E85 (fuel pump limited)
Past - MY16 Audi S3 Sedan
249kw atw on P98 (APR stage 1)
Present - MY18 Audi RS3 Sedan (His)
384kw atw on E85 (APR stage 2)
Present - MY17 VW Tiguan 162 R line (Hers)
** Our Turbo Lag Gives Those v8's A Chance **
History - MY07 Liberty TBSTI 6SPD Sedan
265kw atw on P100
290kw atw on E85 (fuel pump limited)
Past - MY16 Audi S3 Sedan
249kw atw on P98 (APR stage 1)
Present - MY18 Audi RS3 Sedan (His)
384kw atw on E85 (APR stage 2)
Present - MY17 VW Tiguan 162 R line (Hers)
-
jaydece - Posts: 1632
- Joined: Fri Apr 23, 2010 11:21 pm
- Location: VIC, Berwick 3806
- Car: MY18 Audi RS3 Sedan 7 SPD DSG
- Real name: Justin
- Profile URL: viewtopic.php?f=10&t=11864
Re: Tacho addition
by ozbrumby » Sun Jan 05, 2014 9:29 pm
Heya
standard ECU but with some chopping etc to get it to fit to the Brumby
Tacho is cheap Chinese digital off eBay
I thought from main feed down at coil pack
I wouldn't know which wire from ECU unless I pull the loom apart.
That's why I thought down at coil pack
Hmmmm not so squeezy
standard ECU but with some chopping etc to get it to fit to the Brumby
Tacho is cheap Chinese digital off eBay
I thought from main feed down at coil pack
I wouldn't know which wire from ECU unless I pull the loom apart.
That's why I thought down at coil pack
Hmmmm not so squeezy
jaydece wrote:ozbrumby wrote:Folks
I have the EJ25 engine in my Brumby ute and wanted to add a tacho.
Can anyone give me a heads up on how to do it.
I will run a tacho that has only 3 wires
red - power
black - earth
and a green which is sposed to be the "trigger" or pulse to make it work
Where do I put the trigger
what ecu are you using? ej25? aftermarket? I tapped my rpm signal from my dash cluster, but that signal is also connected to the ECU module.
from memory its a square wave signal? 5v or 12v? cant remember exactly...
what brand tacho you running? some brands require a certain value resistor in line with the signal and tacho...
- ozbrumby
- Posts: 12
- Joined: Fri Oct 04, 2013 7:22 pm
- Car: Brumby with 2.5 driveline
Re: Tacho addition
by lump_a_charcoal » Mon Jan 06, 2014 7:43 am
ozbrumby wrote:Heya
standard ECU but with some chopping etc to get it to fit to the Brumby
Tacho is cheap Chinese digital off eBay
I thought from main feed down at coil pack
I wouldn't know which wire from ECU unless I pull the loom apart.
That's why I thought down at coil pack
Hmmmm not so squeezyjaydece wrote:ozbrumby wrote:Folks
I have the EJ25 engine in my Brumby ute and wanted to add a tacho.
Can anyone give me a heads up on how to do it.
I will run a tacho that has only 3 wires
red - power
black - earth
and a green which is sposed to be the "trigger" or pulse to make it work
Where do I put the trigger
what ecu are you using? ej25? aftermarket? I tapped my rpm signal from my dash cluster, but that signal is also connected to the ECU module.
from memory its a square wave signal? 5v or 12v? cant remember exactly...
what brand tacho you running? some brands require a certain value resistor in line with the signal and tacho...
Isn't it off #1 cylinder feed?
Team White GenV GT Manual Wagon with fluffy dice
Mods (in order): Blacked out E-tag, drift spec fluffy dice, BC BR coilovers, strobe comfort flasher, de-badged tailgate + new GT badge, Prova Si knob, Tommy Kaira front grill + Gt badge, Cusco Strut brace (front), Prova blue mirrors, SSW Phoenix 20" black Stance SC-7 20" black, Nitto 35 series tyres, HKS filter, DAMD rear wing, Valenti smoked tail lights, LED rear reflectors, Headlights and others by Leo (hks180), Cusco rear sway bar, Full Invidia Q300 TBE, AVO TMIC, Summit Racing rear strut brace, KiDo Tune, front Cusco swaybar, upgraded LCA bushes, Valenti smoked centre tail light
Build thread here: viewtopic.php?f=10&t=22731
Mods (in order): Blacked out E-tag, drift spec fluffy dice, BC BR coilovers, strobe comfort flasher, de-badged tailgate + new GT badge, Prova Si knob, Tommy Kaira front grill + Gt badge, Cusco Strut brace (front), Prova blue mirrors, SSW Phoenix 20" black Stance SC-7 20" black, Nitto 35 series tyres, HKS filter, DAMD rear wing, Valenti smoked tail lights, LED rear reflectors, Headlights and others by Leo (hks180), Cusco rear sway bar, Full Invidia Q300 TBE, AVO TMIC, Summit Racing rear strut brace, KiDo Tune, front Cusco swaybar, upgraded LCA bushes, Valenti smoked centre tail light
Build thread here: viewtopic.php?f=10&t=22731
-
lump_a_charcoal - Posts: 577
- Joined: Tue Apr 16, 2013 5:36 pm
- Location: Western Sydney, NSW
- Car: 2013 Land Rover Defender 110
- Real name: Linc
Re: Tacho addition
by RX25SE » Mon Jan 06, 2014 9:18 am
Trigger goes to coil negative.
The coils are fed constant power on the positive, the negative is switched (pulsed) to fire the spark.
You can test it with a normal 12v test lamp.
The coils are fed constant power on the positive, the negative is switched (pulsed) to fire the spark.
You can test it with a normal 12v test lamp.
-
RX25SE - Posts: 847
- Joined: Sat Dec 20, 2008 8:43 am
- Location: Melbourne
- Car: MY07 30RB 6sp Wag
Re: Tacho addition
by ozbrumby » Sat Jan 11, 2014 2:20 pm
Rito
I will give it a go
Many thanx
I will give it a go
Many thanx
RX25SE wrote:Trigger goes to coil negative.
The coils are fed constant power on the positive, the negative is switched (pulsed) to fire the spark.
You can test it with a normal 12v test lamp.
- ozbrumby
- Posts: 12
- Joined: Fri Oct 04, 2013 7:22 pm
- Car: Brumby with 2.5 driveline
6 posts
• Page 1 of 1
Return to 2.5i engine specific
Who is online
Users browsing this forum: No registered users and 11 guests