Background:
The Neuspeed FMIC (Front Mount Intercooler) kit is the fifth FMIC installed on the Mk7 GTI as part of the focused FMIC comparison test.
Neuspeed offers two variants of this product, the only difference being that one has a core that is 2.5″ longer than the other. The longer core version is being used in this test.
The testing aims to collect data during street pulls to compare with other FMIC options, and also the stock GTI IC.
Test Procedure:
The complete details of the FMIC test are on the test comparison page. Briefly, a series of consecutive full-throttle third-gear pulls are made on the street using a Mk7 GTI equipped with an IS20 turbocharger operating using a Stage 2 tune. Measurements of temperature and pressure variables are made to use for comparison with other Mk7 GTI intercooler options.
Test Results:
The first chart is an overview of the data collection session showing each of the pulls.
In the above chart, T_Out is the air temperature at the turbocharger compressor outlet.
The next chart shows the trend of the delta IAT over the series of pulls.
Delta IAT is the difference between the Intake Air Temperature (IAT) and the Ambient/Outside Air Temperature (OAT) at an engine speed of 6,000 RPM while operating at full boost.
The Neuspeed FMIC will be compared with the stock GTI IC, AMS/Neuspeed Bicooler, CTS FMIC, ECS Tuning FMIC, ARM Motorsport FMIC, and Baun/Vibrant FMIC in the following charts.
This chart shows the average of the delta IAT throughout the series of pulls.
This chart shows individual data points making up the delta IAT at 6k RPM for all of the intercoolers.
The next chart shows the IAT of the first and last pulls of the Neuspeed FMIC collection session, there is no comparison with the other intercoolers on this chart.
This chart shows the average IAT across the pulls for all of the intercoolers.
Next is the average temperature exiting the turbocharger throughout the pulls.
Next is the average intercooler cooling efficiency throughout the pulls.
This chart shows the average pressure drop between the turbocharger compressor outlet and the intake manifold.
The trend of acceleration times using the Neuspeed front-mounted intercooler is next.
The trend of peak Wheel Horsepower is shown next:
Conclusions:
The Neuspeed Stage 2 FMIC for the Mk7 GTI was installed on an IS20-equipped GTI and operated on the street to collect engine and vehicle data.
In general, the cooling performance of the Neuspeed FMIC is similar to other FMICs tested and falls between the stock GTI IC and the AMS/NS bicooler.
Compared to the other intercoolers, the Neuspeed has a greater pressure drop, replicating the results obtained with the flow bench.