Autosport Labs

I still have never managed to sort this. I think its defo a wasted spark thing as it never did it on a dizzy. I think the only options I have is a different cam, or a anti run on valve tied to the inlet that cuts open to air when the car shuts off to stop fuel being pulled into the engine when the c...

The car hasn't missed a beat since I added the shield wire to earth a both the sensor and EDIS end

yep the engine is running fine? the fuelling looks good as it happens I have switched the engine so I will see what the new one is like. I was thinking about valve timing may have moved / be wrong.

I have a MJ v4 setup on an Austin mini with a supercharger setup. I'm getting a backfire through the carb when you switch the engine off and then re-start it carb backfires I wonder if this is a wasted spark issue as both cylinders are firing at once? Anyone else had anything similar when swapping? ...

mm H ave some techedge gear so its AFR data logging time..

Anyone hooked my the techedge gear to the MJ aux input on V4 ?

after uploading your map did you commit it...? I didn't the first time I uploaded and when you turn the car off it will reset..

just an idea.

mmm I don't have a wide band. and yep its a SU carb... and I'm starting to think its the route of all evil... I might try and switch it for a newer bike carb. its a hard one to tune out.... I have had a little more time to play with the settings its a difficult thing to tune out without knowing the ...

to be honest Its not an mj thing. the car used to do it before mj but it was on a dizzy that had to be retarded to 0 TDC to stop the det later in the rev range. This was the reason I switched to mj to allow accurate control of the advance curve. 11:07:54.974,0 the car stalls after being driven down ...

We will continue testing and see what happens..

Hi I have been trying to trace a stop a stalling problem with my car. I used the data logging function to record the load figures and timing etc. However I'm not sure what I'm looking at What load figures should I be looking at when coming down from high revs to a stop? So I can compare against my l...

well I have been looking at all sort. I started with the plugs and checked the resistance, which according to NGK should be 5 ohms, we got higher reading from newer plugs, 4.2 - 4.9 the new bosh plugs are 5.0 - 6.1 so I tried pairing them but again I think this was just leading us down the wrong way...

I may have fixed it... need to do some more testing. but I was running the car with the old plugs for about 30 miles today and all seems ok.

I had 7 R's in to begin with before I switched to the Iridium plugs.

Thanks for the reply. The two cars both run the following the same: MJ 4 fully built units we didn't make them Wiring harness (Both made by me) We used shielded cable from the Rolling Road place very high quality he uses it on all of the management installs he does. The fault appears at about 3500-4...

Hello all. A mate and I have a problem with plugs on our A-Series engines. I run a 998 which is supercharged and friend has a 1275 on a 45. You will be driving along and it will cut out the rev counter will drop to 0 on the screen the MJ programme will freeze, the engine looses all power its like hi...