78 replies to this topic

[mike.]

Just a quick one really.

Got all my megajolt wired in with the map sensor connected to the manifold. Put a map on it off the ASL site ok and am connecting to the MJ no problem.

I've not tried starting the engine yet but i'm hoping to tomorrow if I can.

The only problem i'm having is that the load gauge on my laptop when connected to the MJ, it says the engine is under full load when its not started.

Is this whats supposed to happen when the engines not running?

It reads the same if I disconnect the vacuum pipe too, and when I apply pressure to the pipe the load goes down?

Heres what i'm seeing on screen. 0 RPM as the engines off, cranking advance set to 12 degrees, but the load reads at 100-101 KPa

I've set the rev limit to 2500, just to test the rev limiter without revving the nuts off a cold engine thats all.



Heres a quick vid of what happens when pressure is put on the pipe:



So whats going in here, this isn't right surely?

[The Matt]

You say you're putting pressur on the pipe, you mean when you blow into it, or you suck on it?

[mike.]

When I suck on it, the load reading goes down.

Not tried blowing on it....

[ACDodd]

Its working as it should, engine not running no vacuum, ie the sensor will read full load. Enging running vacuum generated, sensor will read light loads.

AC

Edited by ACDodd, 01 December 2011 - 07:57 PM.

[The Matt]

Yeah, what he said, it's working correctly.

[mike.]

Ahhh now I think about what actually happens I get it now

Well thats a relief anyway, will it start on my wiring is the next step... Fingers crossed for tomorrow.

by the way matt this is still you MJ, only just got around to seriously wiring/fitting it!

[The Matt]

Seriously? I did wonder. That's taken you longer than my Vauxhall conversion took...... jus sayin'!

You still coming Saturday by the way?

[mike.]

I know its embarrassing!

Yep still coming saturday, i'll text you when i'm leaving.


Anyway was just thinking before - Why is the load gauge saying maximum load when the engine isn't running? There shouldn't be any load from the engine should there? Unless megajolt just displays load at max all the time unless the throttle opens?

[The Matt]

Because it's reading atmospheric pressure mate. 1 bar is roughly 103kPa.

[charliedurrant]

I know its embarrassing!

Yep still coming saturday, i'll text you when i'm leaving.


Anyway was just thinking before - Why is the load gauge saying maximum load when the engine isn't running? There shouldn't be any load from the engine should there? Unless megajolt just displays load at max all the time unless the throttle opens?

Mike,

I've finished my megajolt wiring today. What a chore that was - how many mistakes can one man make. Anyway, it would be good to hear how yours goes....

Charlie

[mike.]

Well i tried to start it today - Absolutely nothing happened.

Engine was getting fuel, plugs were wet but no spark.

The MJ is getting power, and i'm connecting to it ok on the laptop. Also tried reversing the VR sensor wires and no change. So gona study the wiring diagram and see if i've gone wrong anywhere with that but i'm pretty sure I haven't as I triple check it all before I put it in.

If its not my wiring it could be anything! The VR sensor, the EDIS 4, the coil pack or the MJ itself and i've got no way to test them really either....

[charliedurrant]

Well i tried to start it today - Absolutely nothing happened.

Engine was getting fuel, plugs were wet but no spark.

The MJ is getting power, and i'm connecting to it ok on the laptop. Also tried reversing the VR sensor wires and no change. So gona study the wiring diagram and see if i've gone wrong anywhere with that but i'm pretty sure I haven't as I triple check it all before I put it in.

If its not my wiring it could be anything! The VR sensor, the EDIS 4, the coil pack or the MJ itself and i've got no way to test them really either....

If you were near East Kent I'd lend you my parts. Have you tried running it in fallback mode i.e. without the megajolt.

EDIS is said to run with 10 degress advance as a default so then you will at least know if the MJ unit is at fault. I assume you have a meter to test resistance and thus check all the wiring?

Charlie

[charliedurrant]

Here's a link just so you know the right way for the VR sensor.....

http://www.autosport...f66b1db7ed35b79

Charlie

[The Matt]

You got a multi meter?

Check the VR sensor is touting by wiggling a screwdriver in front of it.

The main problems I had with mine (and found with other people's) was the pins on the Edis being corroded.

Also, check your VR-trigger wheel gap.

Make sure you've got power at the middle pin on the coil too.

[The Matt]

How can my phone change outputting to touting???