5 replies to this topic

[oliver122]

hey guys so im going try get my mini kick in on megajolt tonight but was wondering how people go about changing the advance to get it running , not editing it but setting it up , would a timing light be much use as ive got one i can use ? any help would be great guys 

[BritishRacingGreen]

What engine spec is it and what map have you used as a starting point?

 

Megajolt has a 'limp home' feature,  where if the mj box isn't connected/working the edis will give a fixed 10 degrees advance, which will be enough to start the engine.

 

For a first start just make sure everything is as it should be, trigger wheel and sensor correct, dizzy drive removed etc and spin it over.

[oliver122]

we have had it running just on the edis and on the mj with the base map in , ive uploaded the spi md286 off there website(had to do it at work as i dont have the adapter or a comms port on my laptop) as ive been told thats a good starting point my engine spec is :

 

1275

276 kent cam

stage 3 polished and ported head 

hiff 44 k and n cone filter with stub stack 

maniflow stage 2 lcb 

rc40 twin box

Edited by oliver122, 22 May 2013 - 09:04 AM.

[BritishRacingGreen]

Well if it's running and driving you've got over the biggest hurdle. Now you can either play around with the map yourself on the road (if you buy a adapter to connect the mj to a sub slot(see Amazon)) and get it to what feels best or take it to a rolling road and get someone who knows what they're doing to tweak the map to find what makes the best power curve.

[Ethel]

You really need a lead to be able to tune it properly. You can get a USB to serial adapter, the compatibility issue isn't so bad, I use an ebay cheaply (translucent turquoise ) it does all but flash firmware. You'll also need to cobble together  a rj45 to db9 lead (unless you mj is an oldy) - ebay again. You'll then be able to try out adjustments as you're driving along (best to have a copilot to operate the lap to!), or use the 2nd map option for an optition style "better or worse" session.

 

Without a lead the most you could do is use you strobe to the actual advance you are getting, using the edis limp home.

[Ethel]

Mine only cost a couple of quid, but having a garage lappy to not worry so much about grubby fingers is a good idea anyway.