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Stage 1, 2 and 3 figures and the price for your exact engine
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Every car McLaren 675LT 2014 - 2018 3.8 V8

Petrol · 3.8 litre · Maidstone, Kent

McLaren 675LT 3.8 V8 remap675 to 730 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 McLaren 675LT 3.8 V8 from 675 to 730 bhp and from 700 to 830 Nm: 55 bhp and 130 Nm more, on standard hardware. On a turbocharged petrol the gain comes from boost, fuelling and ignition timing recalibrated within the limits of the standard turbo and injectors. 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 McLaren 675LT 3.8 V8 makes, standard and remapped

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

675730
BHP · Power · +55
700830
NM · Torque · +130
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 730 BHP 830 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.

In the shop

Parts that fit the McLaren 675LT 3.8 V8

Listed for this engine, fitted here or shipped. Anything from this list can be added to a Stage 2 build.

Same car, other engines

McLaren 675LT 2014 - 2018: every engine we tune

All McLaren 675LT engines (4) · Every McLaren we tune (97) · All makes

Fixed price

Ask about your McLaren 675LT 3.8 V8

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

McLaren 675LT 3.8 V8 remap questions

How much power does a Stage 1 remap add to a McLaren 675LT 3.8 V8?

55 bhp and 130 Nm. Standard is 675 bhp / 700 Nm; Stage 1 is 730 bhp / 830 Nm. That is a 8% power gain and 19% more torque.

How do I get a price for a McLaren 675LT 3.8 V8 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 a remap affect the warranty on a McLaren 675LT 3.8 V8?

A manufacturer can decline a warranty claim on a part they can show was affected by the remap. We tell you plainly what that means for your car and your warranty position before anything is done.

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

A Stage 1 remap is done in a single visit, usually the same day. The original software is stored and can be restored on request.

The JF Automotive team
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Technicians, calibrators and the front desk, all in Maidstone. No call centre and no subcontracting - the person who books you in is the person you can ask about the job.

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