Finishing with an evaluation of the stock airbox and switching back the Eventuri intake left an unused temperature probe in the engine compartment. I decided to hang the sensor probe near the downpipe to measure the temperature in that area during some routine driving. Unsurprisingly, when the car is stationary the air temperature rises, and […]

Background: This post is a continuation of an investigation into an airbox modification on the stock Mk7 GTI airbox by cutting slots into the side of the lower half of the airbox. In a previous post, the effect on airflow through the air intake was measured. The slots were shown to provide a small increase

Three intercoolers I’ve hung onto to conduct additional evaluation with are the APR, do88, and IE v1 stock location replacements. Each have been in the GTI for a period of time that has allowed for gathering more data. The data I presently use for comparison is generated from a full throttle third gear pull. The