Background: The Lader LM440 IS20 turbocharger represents a return to a turbo that aligns with my preferences for the FWD GTI. When I first installed the Mabotech M520 turbo in October 2023, I had concerns about the GTI’s ability to maintain traction. During the tuning process, when a timing advance update bumped the average peak […]

Background: The Mabotech M720 is a prototype turbocharger that has been installed to record performance data. This post compares data logged with the M720 turbo with that logged using the Mabotech M520 turbocharger. Significantly, the ECU tune has not been updated for the M720 turbocharger, which is larger than the M520. Test Process: The data

Background: In a previous post, I discussed installing a prototype Mabotech turbocharger to facilitate the development of an intake I have been working on. The prototype utilizes a ported shroud housing, a design that helps mitigate compressor surge and allows for greater airflow if the inlet to the compressor inducer becomes choked. While discussing the