Following the installation of the HPA high pressure fuel pump (HPFP) the GTI became slower to start with the engine turning over longer before catching. A data log of the fuel rail pressure versus set point during a third gear pull at 26 psi of boost was also recorded: The fuel rail pressure well below […]
HPA HPFP Slow Start Read More »
Several months ago results from flow testing a few different charge pipe setups were posted. One combination that was not tested at that time was the stock hot side charge pipe direct to the flow bench. A flow test was conducted with the stock hot side charge pipe to measure airflow. Results from this flow
Stock Charge Pipe Airflow – Part 2 Read More »
A discussion yesterday around the airflow performance potential of the cold side charge pipe prompted conducting a test of this part. Background: During a discussion about the cold side charge pipe somebody mentioned that Neuspeed had stated that the stock GTI charge pipe was as good as the design could get. They forwarded me a
Instant Test: Cold Side Charge Pipe Flow Read More »
