Hi guys I have a Microleb MT8 and tuner says its losing power when he winds the car over , says it loses connection with the lap top. Any ideas ? i know its an old comp but its what ive got atm ---------- Post added 08-10-14 at 20:11 ---------- Earth issue im guessing?

when you wind the car over the power goes into the starter maybe causing a drop.

How do u fix this issue? im horrible with electrics

Is it losing power all together or just a voltage drop? Measure the ign wire into the microtech with a multimeter and again whilst cranking

Ok will do and report back

If it is the power supply voltage drop: You could try running a new power wire to the Ecu from the battery, with a relay switched via accessorie also make sure the earth wire from the Ecu is well earthed. An Auto elec could do it for you in under an hour quite a cheap fix. Vls generally have resistance issues due to 26+ year old wiring respectively.[COLOR="Silver"]

When you crank the car over the accessories circuit is temporarily disconnected (to help the car crank). It sounds like you have the ECU connected to ACC (accessories - cig lighter, radio etc) instead of an ignition circuit.

Hvent had a chance to look at it but this is this ecu Some original photos have not been recovered yet.

Its actually an MT12

It could be a motec, it would have the same problems guven what you have described. The boys are onto it, check your volts and check all your earthing points. Battery in the boot?

Update : So there isnt anything wrong with it , you need a hand controller to tune the unit , no wonder the laptop was losing connection