Best 1.4 TFSi TSi Mods & Upgrades [Seat, Audi, VW, Skoda Tuning Guide] 

After redesigning the EA111, the VAG group released the successful but occasionally problematic twincharged 1.4 TFSi engine.
Recent 1.4 TSi and TFSi are gorgeous engines that perform exceptionally well.
As I gain more experience with my new A3, which is powered by the EA211 1.4 TFSi engine, I will add to this page with my observations and suggestions and will put up a new video for the EA111 EA211 and EA211 EVO versions when I have established the best tuning mods for them each.
The EA211 engine is the result of extensive development and testing; it is significantly lighter than its predecessors thanks to extensive weight reduction measures and features only a single IHI turbocharger. The later EA211 was further revised and this gen3 engine has quite a few revisions, many of which are not covered in this video including a cam which is factory pressed into the head so this makes cam upgrades near impossible.
Aluminium is used for the block and cylinder head, whereas cast iron is used for the liners. By opting for a die-forged crankshaft and connecting rods, we were able to expand the stroke to 80 mm while decreasing the cylinder bore by 2 mm, resulting in an engine that is more torquey and can handle the stresses of forced induction.
Although its power output is lower than its predecessor's, the car's responsiveness and sense of power are greatly enhanced by its light weight (just over 100 kilograms).
The EA211's digital inputs have replaced the analogue ones, and the engine is controlled by a Bosh MED17 ECU powered by an Infineon Tricore CPU.
EA211 Engine Upgrades That Really Work
When it comes to cost effective mods then for the money, remapping is the best option, however aftermarket ECUs and piggyback ECUs are also viable substitutes.
While fast road cams are one of the most noticeable mechanical upgrades, they are also one of the most difficult to obtain; nevertheless, you may be able to find a local company that will regrind your factory camshaft.
Note that intake and exhaust mods, by themselves, will NOT ADD POWER in most circumstances, but can aid boost power after other mods have been applied by removing the restriction.
Forced induction, which may be achieved by upgrading turbochargers and superchargers, is the most effective method of increasing air supply, so allowing you to use more fuel and produce more power. It's a high-priced addition but well worth it because of the benefits you'll reap.
Porting and flowing the head are two methods used to increase the flow of air into the engine and decrease the amount of resistance to that air's passage.
Improvements to the intercooler will have a number of positive effects, especially on turbocharged engines that benefit from having the intercooler placed near the front of the vehicle.
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Legal Notice: Unless we have inspected your car we can only provide generic theory. All information is provided without warranty, please check any recommendations made with a mechanic locally to verify it would be legal in your area or region and that it would be suitable for your car and your needs.

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