In for some TLC before FC Tuning, we had this wonderful example of a UK Spec STi. An owner new to the Subaru platform The customer was advised to upgrade the tired old pump before any tuning was to commence. I couldn’t have agreed more. So out with the 10 year old stock pump and in went a nice fresh upgraded in-tank fuel pump in its place. Once the all important Dyno Prechecks had been done and enhancing ignition with a fresh set of plugs it was time to get setup on the dyno. A new actuator is on the way and this STI should net even more horsepower top end. Still. The owner has a nice baseline to work from. A fantastic Subaru Impreza making nice hp and tq.

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