i know, i know. It has been done to death bu just thought i would shed my personal experience.

Got my car back from service last week and dont know whether it was a coincidence or just in my head, but the car definately felt sluggish through the gears. (it is a V with a P1 ECU)

AS far as i know, the car has always been run on super/optimax but thought i would try and reset the ecu to factory settings anyway. Filled up with BP super (98 ron) + octane booster and ran it for 20 miles. Reset the ECU and bugger me!!! Totally different car. well worth 30 mins of my time.

I know you shouldnt make a habbit of it but glad i have done it just once. The car actually feels like it should do. Well stoked.

ben

Tried to do it to MY96 but couldnt find the greena nd black conenctors under the steering column.. any hints?

dunno. just popped off the dash under the steering wheel and they were just there staring me in the face.

I know that they do vary from model to model but they are generally all in very similar positions. Sometimes they are taped up and stuck out of view.

Recline your seat fully .. lie with your head beside the pedals and your feet where your head would normally be. That's how I managed to see mine :) .. Green connectors are larger than Black.

I KNOW that it shouldn't have made any difference what so ever (801 ECU - MY99 (in an MY00)) .. but it has .. honest, particularly from 2.5K to 3.5K, smoother not so hesitant :)

Hamish The Wagon.

Is it true you can just leave your battery unplugged overnight and that resets your ECU?

I thought BP Super Unleaded was 97RON ??? Thought Only Optimax is 98RON???

Mak.

hanley - true. Leaving your battery off will do it but you MAY get problems with your alarm and codes for your stereo

Mak - so did i but there is a BP garage next to me that has genuine 98 RON SUL. :D:D:D However the old wallet is a bit :(:(:(

ben

are we going to go down the same debate on 2 different threads mak???:D:D:D:D

On a P1 it will make a difference for a short time because the ECU will advance again for 100-102 RON fuel. All you will do is make it det slightly though until it learns the timing again.

On a 99/00 UK car, I only reset when I have made a major change or reflashed a new map to the ECU as I want to see present knock correction not a load of historical stuff that I have just mapped to account for.

Reset earlier cars if you change the fuel or mod it.

SDUKES,
They are there M8. Take off the panel under the steering colum first. They are sometimes tapped up but they are there. I have a MY96 also, the greens are very light in colour and quite big connectors, where as the black ones are quite small connectors. There are also other cables and connectors under there but the ones you want are the only one that will fit into each other.
Cheers.
Ian.