quantum tuning

It’s not uncommon for cars to show lower-than-advertised horsepower on a dyno, especially with age, carbon buildup, injector wear, or fuel delivery issues. However, 166hp is quite a drop from the claimed 190hp, which suggests there was already an underlying issue before the remap. Regarding the Turbo Pressure Sensor Error (Spring Symbol): This error is likely due to the remap pushing the turbo beyond its designed limits. A few things to check: Overboost Condition – The ECU might detect excessive boost and trigger a fault. Checking actual vs. requested boost with VCDS can confirm this. MAP Sensor Limitation – If your current sensor can’t handle the increased boost, upgrading to a 3-bar MAP sensor might help. N75 Valve or Boost Control Issues – Ensure the N75 valve is functioning properly and not causing erratic boost levels. Wastegate Adjustment – If the turbo is producing much more boost, the wastegate may need recalibration. Boost Leaks – A small leak can cause pressure fluctuations and trigger errors. How to Fix It Log boost levels with VCDS while driving to check if actual boost exceeds requested boost. Consult your tuner to see if they accounted for sensor limits and if fine-tuning is needed. Check for mechanical issues like vacuum leaks, sensor faults, or overworked turbo components. Some tuners disable error triggers in the ECU, but that’s a temporary fix rather than a solution. If the car is running fine otherwise, a minor software tweak might resolve it.

It’s not uncommon for cars to show lower-than-advertised horsepower on a dyno, especially with age, carbon buildup, injector wear, or fuel delivery issues. However, 166hp is quite a drop from the claimed 190hp, which suggests there was already an underlying issue before the remap. Regarding the Turbo Pressure Sensor Error (Spring Symbol): This error is likely due to the remap pushing the turbo beyond its designed limits. A few things to check: Overboost Condition – The ECU might detect excessive boost and trigger a fault. Checking actual vs. requested boost with VCDS can confirm this. MAP Sensor Limitation – If your current sensor can’t handle the increased boost, upgrading to a 3-bar MAP sensor might help. N75 Valve or Boost Control Issues – Ensure the N75 valve is functioning properly and not causing erratic boost levels. Wastegate Adjustment – If the turbo is producing much more boost, the wastegate may need recalibration. Boost Leaks – A small leak can cause pressure fluctuations and trigger errors. How to Fix It Log boost levels with VCDS while driving to check if actual boost exceeds requested boost. Consult your tuner to see if they accounted for sensor limits and if fine-tuning is needed. Check for mechanical issues like vacuum leaks, sensor faults, or overworked turbo components. Some tuners disable error triggers in the ECU, but that’s a temporary fix rather than a solution. If the car is running fine otherwise, a minor software tweak might resolve it.