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Stage 1, 2 and 3 figures and the price for your exact engine
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Every car ›Lexus ›RX ›AL20 (2015 - 2024) ›450h

Hybrid · 3.5 litre · Maidstone, Kent

Lexus RX 450h remap313 to 323 bhp with Stage 1 software. The figures, the parts and the other engines in this car, on one page.

A Stage 1 remap takes the Lexus RX 450h from 313 to 323 bhp and from 335 to 350 Nm: 10 bhp and 15 Nm more, on standard hardware. On a plug-in hybrid the remap works on the combustion engine only; the electric motor and battery are untouched, so EV range and charging are unchanged. It is done in a visit at our Maidstone workshop and the original file is kept, so it can go back to standard.

Stage 1 on this engine

What the Lexus RX 450h makes, standard and remapped

Standard is the factory figure. Stage 1 is the calibration we run on this engine, software only, nothing bolted on.

313→323
BHP · Power · +10
335→350
NM · Torque · +15
Stage 2 and Stage 3 figures, and the price for each, are in the calculator for this exact engine.Open the calculator →
1k 2k 3k 4k 5k 6k 7k 323 BHP 350 NM
Stage 1 powerStage 1 torque (dashed)Standard

Drawn from the quoted peaks: torque peaks at the quoted Nm, power is derived from it. A measured before-and-after graph comes with a dyno session.

Same car, other engines

Lexus RX AL20 (2015 - 2024): every engine we tune

All Lexus RX engines (15) · Every Lexus we tune (107) · All makes

Fixed price

Ask about your Lexus RX 450h

Registration and which stage. We come back with what it needs, what it makes and what it costs, usually the same day.

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Got it. We will come back with the figures and a fixed price for your car.

If you know them, these help us get the quote right first time. Entirely optional.

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Questions

Lexus RX 450h remap questions

How much power does a Stage 1 remap add to a Lexus RX 450h?

10 bhp and 15 Nm. Standard is 313 bhp / 335 Nm; Stage 1 is 323 bhp / 350 Nm. That is a 3% power gain and 4% more torque.

How do I get a price for a Lexus RX 450h remap?

Put the registration into the calculator and it prices Stage 1, 2 and 3 for this exact engine, or send the form on this page and we come back with a fixed price, usually the same day.

Is a Stage 1 remap safe for this engine?

Stage 1 stays inside what the standard turbo, injectors, clutch and cooling were built to take. The figures above are the calibration we run, not a maximum. The car is checked for stored faults before and after, and the original file is kept so it can go back on.

Does remapping a Lexus RX 450h affect the battery or electric range?

No. The remap changes the petrol engine calibration only. The high-voltage battery, motor and charging are not touched, and EV range is unchanged.

How long does it take, and can it be reversed?

A Stage 1 remap is around 2 hours, in a single visit. Add a dyno session and allow 4 to 5 hours. The original software is stored and can be restored on request.

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