Subaru Legacy ECU Remapping & Engine Tuning

We have remap figures for one Subaru Legacy engine, the Legacy Mk4 2.0 D: 148 to 180 bhp (+21%) and 350 to 400 Nm (+14%). Three more engines are in development. Book your Legacy in at our Burnley workshop on 01282 779 000, or find a local dealer.

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Subaru Legacy remap gains at a glance
Generation	Years	Engines	Power gain	Largest gain
Legacy Mk4	2003–2009	3	+21%	+32 bhp (+21%) 2.0 D
Legacy Mk5	2009–2014	1	In Development	–

Subaru Legacy Mk4 remap figures
Subaru Legacy Mk4	Original BHP	Remapped BHP	Original Torque (Nm)	Remapped Torque (Nm)
2.0 D 148 BHP 2003-2009	148	180 (+21%)	350	400 (+14%)
2.0 Turbo 250 BHP 2003-2009	In Development
2.5 Turbo 282 BHP 2003-2009	In Development

Subaru Legacy Mk5 remap figures
Subaru Legacy Mk5	Original BHP	Remapped BHP	Original Torque (Nm)	Remapped Torque (Nm)
2.5 Turbo 296 BHP 2009-2014	In Development

Frequently asked questions

How much power does a remap add to a Subaru Legacy?

A remap takes the Legacy Mk4 2.0 D from 148 to 180 bhp (+21%).

How much extra torque does a remap give a Subaru Legacy?

Torque on the Legacy Mk4 2.0 D rises from 350 to 400 Nm (+14%).

Which Legacy generations do you have remap figures for?

We have figures for the Legacy Mk4 (2003–2009). Remaps for the Legacy Mk5 are still in development.

Are remaps available for every Legacy engine?

Not yet. Three of the four engines listed above are still in development. Call our Burnley workshop on 01282 779 000 for an update.

Where can I get my Legacy remapped?

Book it in at our workshop in Burnley, Lancashire, on 01282 779 000, or find a local remap dealer in our dealer directory.

How we develop your remap

Our remaps are developed in-house at our facility in Lancashire, and cars are developed on our Dynojet 424xLC² dyno. Read more about dyno tuning at BHP UK.

Our Products & Services

All of our software, programming and tuning services are designed and built in-house and are designed to enhance your vehicle and bring out it’s pure & true performance potential.