Testing

Golf R vs. Stock GTI IC Histogram

Golf R vs. GTI Intercooler

Background: A little over two years ago, I installed a stock Golf R IC in my GTI to compare its performance to the GTI IC. The results showed that the GTI IC was cooling slightly better (~3 degF) than the Golf R. As I noted at the time, the relatively few pulls made with the […]

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ARM Motorsports 4.5" Catless Downpipe Flow Test - Stock Exhaust Transition

ARM 4.5 inch DP Flow Test

Background: The ARM 4.5 inch DP for the Mk7 was recently released, and ARM Motorsports contacted me to ask if I would conduct a flow test with the new downpipe. This downpipe is unique in terms of size, which piqued my interest in testing it to see how it compares with some of the other

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ARM Motorsports Competition FMIC Core Depth

ARM Competition FMIC Flow Test

Background: Lately, I’ve been operating my GTI using a borrowed ARM FMIC to fact-check claims about using it with a hybrid turbocharger. In addition to loaning the FMIC, ARM Motorsports also lent me their bicooler hoses to get comparison data.   While this data collection is ongoing, ARM has released another intercooler product, the ARM

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