boost response analysis

Bicooler Turbo Lag

Background: The belief that a bicooler configuration is associated with a slower rate of boost pressure rise is logical from the standpoint of having a larger volume to pressurize, but past comparisons have shown that the time difference to pressurize the different volumes is negligible. In this post, data from several turbochargers of different sizes […]

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Neomax Silvers compared to EQT Balanced Line

How to Recognize Deflection and Misinformation

Consumers in the MQB community deserve clear, accurate information, not misinformation, when comparing aftermarket parts. But sometimes, when you raise factual questions about product origins, timelines, or similarities, the conversation gets derailed—not by evidence, but by rhetorical techniques that obscure the issue. This post uses guidance from the Debunking Handbook to help readers recognize these

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GESi Cat vs Catless - Wastegate Duty Cycle

GESi Cat vs Catless Street Pulls

Background: I previously discussed the CC Design exhaust midpipe with GESi cat as part of an audio analysis. In this post, I compare turbocharger and vehicle performance data between the catless and GESi catted versions of the midpipe. Test Process: A series of full-throttle third-gear pulls are made from 2,500 to 6,500 RPM. Test Results:

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