GFB Atomic Boost Controller: A Comprehensive Analysis

Renowned for its reliability and effectiveness, the GFB Atomic is esteemed as one of the finest manual boost controllers available. Its reputation is built on delivering a consistent and smooth boost curve, a rapid rate of ascent, and exceptional value for money.

In a rigorous assessment, the Atomic Boost Controller underwent testing on a MY02 Subaru WRX, which had only undergone a turbo-back exhaust modification. The controller was compared directly with the factory version in a series of back-to-back tests. Initially, a baseline power run was conducted utilizing the factory boost control, with simultaneous measurement of the boost level. Subsequently, the Atomic was installed and meticulously adjusted to match the same peak boost level of 0.9bar (13.2 psi), ensuring precise comparison of spool-up times before and after installation.

The resulting dyno graph depicts the Atomic boost curve in green and the factory curve in blue, with both tests executed in 4th gear. Towards the conclusion of the chart, the convergence of the two curves provides conclusive evidence that the Atomic was indeed set to the same peak level. Notably, significant enhancements are observed in the lower rev range, with gains reaching up to 18kW (23.4hp) AT THE WHEELS!

This substantial increase in power illustrates the Atomic’s ability to facilitate earlier boost rise compared to the factory controller. This translates to markedly improved acceleration, beginning as early as 1700RPM in the rev range. Remarkably, all of these benefits are achieved without surpassing the factory peak boost level, making the Atomic Boost Controller an exceptional value proposition.