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How much HP does a K04 turbo add?

Author

Robert Miller

Published Mar 22, 2026

How much HP does a K04 turbo add?

Using 98-octane fuel, the APR K04 Turbocharger System produces an astonishing 348 horsepower and 342 ft-lbs of torque. Unlike the factory turbocharger, power stays strong and doesn’t dramatically taper towards the vehicle’s new 7,100 RPM redline.

What turbo does Audi A3 have?

Acceleration and Power The base 2015 Audi A3 1.8T comes with a 170-horsepower, turbocharged 1.8-liter four-cylinder engine, while the A3 2.0T has a 220-horsepower, turbocharged 2.0-liter four-cylinder engine. Both engines are available in sedan or convertible models.

Does 1.8 t mean turbo?

Aside from its incredibly free-breathing head, the 1.8T’s main secret weapon is its turbo and induction system. All stock 1.8T’s use a VW-sourced turbocharger, somewhat equivalent to a Garrett T30.

How much power can a ko4 turbo handle?

K04 is good till around 310 to the wheels. We never measure it to the wheels in our country, we just measure hp, so it is realistic to achieve 340-350 on dsg tranny with exhaust and induction.

How big is a ko4 Turbo?

For those of you that need a few more key specific numbers; The OEM K04 uses a 45mm inducer; 56.25mm exducer cast compressor wheel, while the CST4 uses a 50.5mm inducer and 68.1mm exducer forged billet compressor wheel. On the turbine side, the OEM K04 uses a 50.1mm inducer and a 44.5mm exducer 12-blade cast wheel.

How much boost does a KO4 turbo make?

K04 is good till around 310 to the wheels.

How big is a KO4 turbo?

Is the Audi A3 fast?

Its punchy petrol-electric drivetrain can propel the A3 Sportback to 62mph from rest in 7.6 seconds, with a 138mph top speed in hybrid running. The three performance versions (RS3, S3 and 1.8 TFSI) can all do 0-62mph in less than seven seconds, and every A3 Sportback can hit a top speed of at least 120mph.

What does TFSI stand for?

turbo fuel stratified injection
Audi’s most utilised engine is the turbo fuel stratified injection (TFSI). The turbo aspect is denoted by fuel being pressure-injected into the combustion chamber of the engine to create an instant charge.

Are 1.8T engines good?

the 1.8T is actually an extremely good engine, the sludging issue wasn’t a problem with Audi’s design, but with its suggested service interval, which was 10K miles.

Is the 1.8T reliable?

One Volkswagen engine consistently appears on ‘most reliable’ discussions and lists: the 1.8T. Haynes calls the 1.8-liter turbocharged four-cylinder engine the best VW engine. ItStillRuns compares it to the LS small-block V8 in terms of durability and tunability.