Euro Sport Intake
Our hosts had been waiting to try their Cool-Flo Race air-intake on a TDI and this would be the opportunity. With a minor modification, they planned to use an existing Mk5/A3/CC 2.0TSI intake that comprises a metal intake tube (available in black/wrinkle or chrome/clear powdercoat), ITG cone filter and two silicone connectors. The only difference between our diesel and most gasoline models is an additional vacuum hose on the TDI, but a simple nozzle would accommodate that. So we went ahead with the installation you can read here or online.
With Euro Sport's CAI installed, we definitely have more induction noise, and a sporty turbo sound. But would it make a difference on the dyno? With the temp up to 83?F, the three runs produced 132, 133 and 134whp. With the correction factors, this did mean we'd gained 2-3hp in the mid-range with our intake and exhaust. While it's negligible, we are finally moving in the right direction. The next step will be some performance software to see if we can finally get this 2.0 four-cylinder turbo-diesel cooking. Stay tuned for the next update.
 1. Stock airbox similar to...  1. Stock airbox similar to many current VW applications |  2. To start, disconnect mass...  2. To start, disconnect mass airflow (MAF) sensor plug and pull off vacuum hose |  3. Undo this 5mm allen screw...  3. Undo this 5mm allen screw and the airbox is loose |
 4. Pull off the intake snorkel...  4. Pull off the intake snorkel from the upper grille duct and the airbox below |  5. Undo clip at back of MAF...  5. Undo clip at back of MAF sensor and pull MAF from flexible tube. You will then need to pull another small flexible hose off the bottom of the airbox before you can remove it completely. This hose heats the airbox for cold-start emissions and isn't needed for the cone filter |  6. Screw a supplied grommet...  6. Screw a supplied grommet into the airbox mounting thread. This gives the intake tube some suspension |
 7. Unscrew the MAF and then...  7. Unscrew the MAF and then push the MAF back into the flexible hose you removed it from on the car |  8. Using the jubilee clips...  8. Using the jubilee clips provided, tighten a silicone connector to the MAF. Then reconnect the MAF plug and push the vacuum hose into the nozzle in the silicone connector (make sure you align the hole before tightening) |  9. Push the intake tube into...  9. Push the intake tube into the other end of the silicone connector and tighten. A bracket on the tube then sits over the grommet and is held in place with a nut |
 10. Fix the second silicone...  10. Fix the second silicone connector to the cone filter. The clamp the connector to the other end of the intake tube |  11. The completed installation...  11. The completed installation looks very smart and gives a sporty induction sound |  12. The power curve with the...  12. The power curve with the intake and exhaust in red shows gains of 2-3hp over previous runs with the exhaust alone |