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This option allows you to record and analyze vehicle and tuning data, change jb4 performance maps, and update jb4 firmware as we release free newer versions.
The jb4 is a plug and play performance tuner for turbocharged vehicles, preloaded with custom software and up to 8 maps for different fuel types and modification.
Cold air intakes are popular upgrades for vw jetta owners seeking more horsepower, quicker throttle response, and a sportier engine note
It has been tried and tested over many bmw models and it is time for the evolution to start for the vw market
Upgrade units for jb1 will be available soon
The jb4 is a true plug and play tune.
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How do i know if i can stack the jb4 over my flash tune and what is the process
This varies on what the flash tune is requesting from the car and if there is room for improvement.
Integrated engineering is your source for vw mk6 jetta gli cold air intake kits
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We've been pioneering plug & play performance tuning, intakes, and mods since 2007.
The 2015 model is marked down now with the 2016 models out
Is the difference between 2015 vs 2016 jettas a big one
And the difference between the 1.8 and 2.0 gli a big one?
Compare the 2015 volkswagen jetta and 2015 volkswagen jetta gli
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Vw performance tuner the jb4 is a true user adjustable plug and play solution for gen3 jetta gli and turbo beetle
Read our 2026 volkswagen jetta gli review for information on ratings, pricing, specs, and features, and see how this sedan performed in our testing.
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The jb4 now has full logging ability and all the parameters on the logging page are logged
The only three parameters to be added in the next firmware update is the oil temp, water.
These 5 mods could get your mk7 gli to 350hp
In this guide we include the best ecu tunes, air intakes, downpipes,.
A cold air intake is protected from the hot engine bay
Cold air is denser than hot air (i.e
More oxygen molecules per cubic meter)
The standard air box with it's restricted flow does provide.
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Learn about vw mk6 tuning for the golf gti, golf r, and jetta gli
What are the best tunes for the mk6
Jb4, apr, cobb and more
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