![]() ![]() A3’s with is20 are kinda shit out of luck since we don’t have Cobb capability yet? Lol kinda sucks unless there’s a different solution. Those drivers who are picky about drivability will greatly appreciate this update.So in other words. ![]() With our fix implemented, all our GTI tunes now drive smoothly and responsively without any such lag/surge feeling. Then it would suddenly shut the DV and result in an odd surge of power. Before the fix, the ECU would keep the DV open, bleeding boost and creating a feeling of lag. This issue was most commonly noticed at part throttle operation around 3000RPM and around 40-50% throttle. This allowed us to control the DV and fix a factory tuning issue that was causing drivability issues for many GTI's. This is an industry leading improvement that we discovered and resolved by identifying the necessary ECU tables and working with Cobb Tuning to add these tables to their AccessTuner software. Those drivers who are picky about drivability will greatly appreciate this update. The noise you are hearing is more then likely due to the intake, you are fine. Compressor surge is cauesed when too boost is built up so fast that it actually forces air back into the turbo, stalling the compressor wheel. With our fix implemented, all our GTI tunes now drive smoothly and responsively without any such lag/surge feeling. Like I said before though, the stock intake doesnt allow the fluttering to be as audible. Happens during fast acceleration from 3-4kRPM+ to shift. However, it is essential to note that these cars run blow off valves to prevent compressor surges, leading to the next misconception. ![]()
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