The tomei uel header fixes both problems — bringing back that signature subaru sound while opening up airflow

Tune path, what to log, reliability checks, headers, ethanol, brakes, tires, alignment, and practical mod order.

My understanding is that removing the cats (either with an aftermarket header or by decating the oem one) is what allows the tune to improve the torque dip

On top of that, the 2017+.

In order to use the stage 2 tune, we require installing an aftermarket header.

Eliminate the torque dip, add 30whp.

Follow us to learn how to fix the torque dip in your subaru brz or scion frs!