Background:
The Majesty (eBay) bicooler kit is the third bicooler intercooler installed in the focused FMIC comparison test.
The testing aims to collect data during street pulls to compare with other FMIC and Bicooler options and the stock GTI intercooler.
Majesty Ripoffs:
Like other products on eBay, the Majesty bicooler is a Chinese ripoff; in this case, the Mabotech Mk7 Street Bicooler is the original design.
Stealing content by Majesty isn’t limited to the product; its advertising also contains ripped-off content.
The company has stolen content from this site (MyGolfMk7.com) and uses it in its eBay advertising.
I took the picture on the left while working on my GTI and included it on this site. The photo on the right is from Majesty’s intercooler ad on eBay.
And here is the doctored picture on the Majesty advertisement. They have changed the color of the intercooler and the Milwaukee power ratchet in the lower left corner from red to blue.
I don’t condone Majesty ripping off Mabotech or me.
Test Procedure:
The complete details of the FMIC test are on the test comparison page. A series of consecutive full-throttle third-gear pulls are made on the street using a Mk7 GTI equipped with an IS20 turbocharger that operates using a Stage 2 tune. Temperature and pressure variables are measured to compare with other Mk7 GTI intercooler options.
Test Results:
The first chart is an overview of the data collection session, showing each pull.
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 following charts will compare the Majesty Bicooler with the stock GTI IC, AMS/Neuspeed bicooler, G-Plus bicooler, and Forge bicooler.
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 intercoolers.
The next chart shows the IAT of the first and last pulls of the Majesty bicooler collection session; there is no comparison with the other intercoolers on this chart.
This chart shows the average IAT across the pulls.
Next is the average temperature exiting the turbocharger throughout the pulls.
This chart shows the average intercooler cooling efficiency throughout the pulls for all intercoolers.
This chart shows the average pressure drop between the turbocharger compressor outlet and the intake manifold.
The trend of acceleration times using the Majesty bicooler is next:
The trend of peak Wheel Horsepower calculated using Virtual Dyno is shown next:
Conclusions:
The Majesty Bicooler 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 Majesty bicooler fell between the stock GTI IC and the AMS/NS bicooler, slightly more similar to the AMS/Neuspeed.
The pressure drop was less than the other intercoolers tested thus far; this included the dedicated front mounts.