ok quite hard to explain but il try my best.
When a car is made is the ECU set up already e.g. Fuel delivery etc etc.
I was told last night that my car might be running off due to me putting a full exhasut system on with panel filter etc etc. e.g. the ecu is still set for normal settings.
The boy then said that if you Disconnect your battery for 24 hours it will reset the ecu, then when you reconnect it and if you drive it hard the ECU learns...kinda struggling to explain...how much fuel is required, and air etc, etc.
I thought the boy was talking shite but is this true?
Sorry if this is a daft question