Subaru Impreza ECU Remapping & Engine Tuning

We have remap figures for eight Subaru Impreza engines across two generations. Petrol engines gain +7% to +14% power and diesels +16% to +21%. The largest bhp increase is on the Impreza MK2 2.0 Turbo: 215 to 251 bhp (+36 bhp, +16%). Three more engines are in development. Book your Impreza in at our Burnley workshop on 01282 779 000, or find a local dealer.

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Subaru Impreza remap gains at a glance
Generation	Years	Engines	Power gain	Largest gain
Impreza MK2	2000–2007	3	+12% to +16%	+36 bhp (+16%) 2.0 Turbo
Impreza MK3	2007–2014	8	+7% to +21%	+34 bhp (+14%) WRX STI 2.5 Turbo

Subaru Impreza MK2 remap figures
Subaru Impreza MK2	Original BHP	Remapped BHP	Original Torque (Nm)	Remapped Torque (Nm)
2.0 Turbo 215 BHP 2000-2007	215	251 (+16%)	291	350 (+20%)
2.0 Turbo 221 BHP 2000-2007	221	253 (+14%)	300	363 (+21%)
2.5 Turbo 262 BHP 2000-2007	262	296 (+12%)	390	437 (+12%)

Subaru Impreza MK3 remap figures
Subaru Impreza MK3	Original BHP	Remapped BHP	Original Torque (Nm)	Remapped Torque (Nm)
2.0 148 BHP 2007-2011	148	165 (+11%)	200	220 (+10%)
2.0D 148 BHP 2007-2011	148	180 (+21%)	350	400 (+14%)
2.0D 107 BHP 2007-2011	In Development
WRX STI 2.5 Turbo 227 BHP 2007-2014	227	261 (+14%)	300	358 (+19%)
WRX STI 2.5 Turbo 276 BHP 2007-2014	276	307 (+11%)	375	438 (+16%)
WRX STI 2.5 Turbo 305 BHP 2007-2014	305	329 (+7%)	405	458 (+13%)
WRX STI 2.5 Turbo 296 BHP 2007-2014	In Development
WRX STI 2.5 Turbo 268 BHP 2007-2014	In Development

Frequently asked questions

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

Petrol engines gain +7% to +14% power and diesels +16% to +21%. The full figures for each engine are in the tables above.

Which Impreza engine gains the most from a remap?

The Impreza MK2 2.0 Turbo gains the most: 215 to 251 bhp (+36 bhp, +16%). Torque rises from 291 to 350 Nm (+20%).

Which Impreza generations do you have remap figures for?

We have figures for two generations: the Impreza MK2 (2000–2007) and Impreza MK3 (2007–2014).

Are remaps available for every Impreza engine?

Not yet. Three of the 11 engines listed above are still in development. Call our Burnley workshop on 01282 779 000 for an update.

Where can I get my Impreza 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.