Autosport Labs

It sounds like you are getting a power supply through the ULN2003 chip as these drive the LED's by sinking the voltage. These chips have internal pull up resistors incorporated inside (hence the power coming through the pull up resistors - IIRC). Now the best way to connect power to the leds is at t...

So long as you do a bit of homework and you know what direction to take then go a head. You seem to know what you need. Just note that there aren't too many 72-2 systems out there so you are in quite a lonely territory with this, but the people on this forum, I'm sure, will help/advise you where the...

Welcome to the forum spandit. Check out http://www.autosportlabs.org/viewtopic.php?t=2026&postdays=0&postorder=asc&start=0 but you are definitely on the right lines. It will cost a little more to have the trigger wheel manufactured (and more accurately). You can use different VR sensors ...

Van

Thanks very much for sharing your map, i'm sure people will find it useful in the future.

Ryan

Hi Nick and welcome to the forum. Firstly before you start an engine you need to make sure everything is working as it should be, especially if your not quite sure and you have fitted a new component. First thing I would do is disconnect the megajolt (turn it off or what ever). Now with the EDIS wir...

Ok, So i fitted Resistor plugs and swapped to my original cable and it works, however it does occasionally lock up, but i think it is the PC not the MJLJ software. Thanks for all your help guys (especially Brent) it is appreciated, this Forum is one of if not the best for getting clear and great he...

Hav.en't ever used resistor plugs on my v3 install,3 years running Some people do need them, some don't. I can't put my finger on why but I'm guessing makes too much interference on some systems. I have noticed some systems like boostedmini's initially doesn't but then some how does require resisti...

Watch it to the end, oh dear

http://www.youtube.com/watch?v=MNin7QJEOZE

That's brill news, well done :wink: The reason for the tacho not being exact is the tolerance of the components (resistors, etc) used as the circuit boards were massed produced and i'm guessing not calibrated with too much precision. Also a possible reason why there is increased accuracy with higher...

There's one other thing... Since my original tach picked up off the positive of the coil (IIRC), it is constantly fed a 12v signal. When I pull the tach wire off the coil, the car dies. Since the MJLJ went in, I've just had this connected to a +12v source. The fuel pump relay is connected to this w...

What spark plugs are you using with the megajolt system? They should be resistive. Non-resistive spark plugs can cause interference and it may be what your experiencing, but that isn't for certain.

That's the conclusion I have come to also broke4speed. Remove the resistor and replace with a wire link and also remove the capacitor. Keep all the tracks as they were and try not to damage them. If they become damaged then you can use solder to remake the track.

Ryan

Erm.. I thought the only change needed was cutting the track at R8? (From memory.. Haven't checked..) This was where I was going to wire in the switch. Still cut the R8 track as you are not going to be using the TPS input, only the 5v reference is required for a 5v regulated supply for the voltage ...

You will need to make some circuitry changes as the AFR will provide a 0-5v signal, where as a CTS is a passive sensor, so will need a voltage divider circuit to provide an output voltage also. You could use the 5v TPS output of the MJLJ and a resistor to create a voltage divider circuit to provide ...

Sounds like your certainly on the right path.

Baud rate or com port speed I believe should be set to 4800 I think, but hopefully Brent should be able to clear that up.