For sale - As new Audi RS3 FL ( 67 plate onwards to current cars ) OEM Engine ECU + MRC Stage 1 tune + BMC Air Filter ( as supplied by MRC ). This is a unique and very rare opportunity to purchase everything you need to take a stock FL 2017+ 400 ps RS3 to stage 1. Utilising one of the best maps in the business from the world famous MRC @ Banbury. The map installed on the new ECU was specifically designed to work within the cars OEM parameters limiting torque to 649NM so no further calibration is required to the cars original.gearbox software. Ie no TCU tune required. This takes a stock RS3: Power from 400 PS.... to 465ps Torque from 480 NM....to 649 NM The difference in power is extremely noticeable, providing an un relenting wave of torque throughout the rev range. The stock gearbox software works in full unison providing seamless and smooth shifts. The cars drivability remains fully intact enhancing all of the good bits but whilst introducing zero negatives. It will definitely put a smile on your face. As all components can be removed and factory items restored this leaves you in a unique place. Once the tuned ECU is removed and your original ECU is restored your car will effectively remain as it left the factory. Therefore no ECU counter or TCU gearbox counter issues - unlike a normal ECU and gearbox mapped car. Other benefits over using say a tuning box ( very limited choice for FL RS3 ) is that you retain all of the ECU’s safety features and of course there is no additional wiring looms to install in the car. This mapped ECU and air filter just replaces your stock items. For a plug and play solution all that is required is for the new ECU to be coded to your car so that things like the immobiliser work. I can highly recommend @DJAlix from Vagcarcoding who can install and code as required. Alex has quoted £65 to recode this specific ECU to your FL RS3. Original cost of the new OEM ECU, Filter and MRC stage 1 map was just below£2000. Unlike many Ebay items, The ECU was purchased new direct from Audi. The air filter and ECU are still like new as only used for about 1,000 miles before the car was changed. ( which was not expected ), but an extended test drive in a friends new car and the value retention of the RS3 and the start of year took me in a different direction. If you are remotely thinking about mapping your car, or are curious what a stage 1 FL RS3 feels like but have warranty concerns...this offers a unique opportunity. Just to clarify and make crystal clear- The ECU will require professional coding to work in another Audi RS3- this is for the engine immobiliser etc. Vagcarcoding can offer this service @ £65 for this specific ECU as it is known to them. Please DM ONLY if you are a serious buyer. No silly offers it is already priced to sell, other Ebay items which are not in as good condition and are for the older car and without the added benefit of the world renowned MRC map & BMC air filter are @ £950+. Grab yourself a bargain - £650. Posted to UK mainland address. Thats cheaper than a MRC remap, you get the BMC Air filter and you get to keep your original ECU as it left the factory and have this ECU to sell on recouping your outlay! . You wont get that anywhere else! What are you waiting for...... Many Thanks J.