Compatable tachometer
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Compatable tachometer
Does anyone know of a tachometer that you can buy off the shelf that will work from the tach out pin on MJLJ ver 4 without having to make a circuit board or perform some sort of witchcraft to make it work?
Any modern electronic tacho will work just fine.
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A couple of noob questions for you guys.... I have been fiddling with this set-up for a while now.... The car ran sweetly for ages, but I took the car off the road some months back (defect notice from the plod), at which time I pulled the turbo gear off the Dub.... No I'm back to fitting it all up and the car will not play ball....
Looking through the archives in search of an answer to one of my problems... I have revived an old thread in the hope of getting some clarity....
I have a Autometer Monster Tach hooked up to the tach out pin and the gauge is receiving a signal.... The issue seems to be the accuracy of it... The MJLJ program reads a different rpm when compared to the tach...
Any one have idea on this?
Could it be related to the possibility that the timing is a bit out?.... That's the other issue.... My trigger wheel is out by what looks to be 5º.... I have run the engine with the MJLJ disconnected and it ran fine in the "Limp Home" mode?.... I know it's possible, but how do I fine tune the timing?
I'm getting myself confused....
Looking through the archives in search of an answer to one of my problems... I have revived an old thread in the hope of getting some clarity....
I have a Autometer Monster Tach hooked up to the tach out pin and the gauge is receiving a signal.... The issue seems to be the accuracy of it... The MJLJ program reads a different rpm when compared to the tach...
Any one have idea on this?
Could it be related to the possibility that the timing is a bit out?.... That's the other issue.... My trigger wheel is out by what looks to be 5º.... I have run the engine with the MJLJ disconnected and it ran fine in the "Limp Home" mode?.... I know it's possible, but how do I fine tune the timing?
I'm getting myself confused....
Is the tacho reading a constant double/half/1.5/0.75 times what it should do?
Official Megajolt distributor for UK and Europe.
Complete Megajolt packages, EDIS kits, Trigger wheels and everything else you need for your megajolt install
www.trigger-wheels.com
Complete Megajolt packages, EDIS kits, Trigger wheels and everything else you need for your megajolt install
www.trigger-wheels.com
Check if it definitely is half. If so then you've probably got a switch on the back of the tacho labelled 4-6-8-12. If it is currently on 8 switch it to 4, if its on 12 switch it to 6
Official Megajolt distributor for UK and Europe.
Complete Megajolt packages, EDIS kits, Trigger wheels and everything else you need for your megajolt install
www.trigger-wheels.com
Complete Megajolt packages, EDIS kits, Trigger wheels and everything else you need for your megajolt install
www.trigger-wheels.com
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- Joined: Sun Sep 07, 2008 1:54 pm
- Location: Fareham, GB
Hey humpty.
What is the advance in limp home mode (mjlj disconnected.turned off)???
The MJLJ has a trigger offset in Global Controller Options. With this you can counter affect any error you get when physically setting the TDC with the triggerwheel and VR sensor, up to a max of +/-5 degrees.
When this has been setup correctly, the advance you get on the computer screen should be mirror the timing marks on the engine.
Hope this helps
Ryan
What is the advance in limp home mode (mjlj disconnected.turned off)???
The MJLJ has a trigger offset in Global Controller Options. With this you can counter affect any error you get when physically setting the TDC with the triggerwheel and VR sensor, up to a max of +/-5 degrees.
When this has been setup correctly, the advance you get on the computer screen should be mirror the timing marks on the engine.
Hope this helps
Ryan
1310 A-series Mini, lightened and built myself. V4 board and loving it
Rasputin22 - The Mini Forum
Rasputin22 - MK1 Golf Forum
Megajolt repair for the UK available
Rasputin22 - The Mini Forum
Rasputin22 - MK1 Golf Forum
Megajolt repair for the UK available
Looks to be about 5º advanced.... Hard to tell accurately as there are exhaust pipes and sensor mounts in the line of sight... Going to add some marks to the mount and wheel to confirm TDC, then check once more.NITROPIXIE wrote:What is the advance in limp home mode (mjlj disconnected.turned off)???
I did try that yesterday, but couldn't tell if it had taken effect.... Then I had another look at the Global Controller Options window and the offset value wasn't showing any longer?NITROPIXIE wrote:The MJLJ has a trigger offset in Global Controller Options. With this you can counter affect any error you get when physically setting the TDC with the triggerwheel and VR sensor, up to a max of +/-5 degrees.
Tacho sorted.... The PO (of the tach) told me it had been modded for a 4cyl engine.... Silly me assumed that that was the case.... But I pulled the heat shrink off the tagged link wires and they had been soldered back together... In 8cyl mode!!!!
Didn't get to checking on the timing issue.... Will do that tomorrow....
Didn't get to checking on the timing issue.... Will do that tomorrow....