4.8 2,200+ reviews
4.8★★★★★2,200+ reviewsClosed · opens Monday 8am
Contact us
Searches the whole site: cars we tune, parts, case studies, the Help Centre, services and news. Try RS21JFAP0420Golf RMilltekAdBlue
4.8★★★★★2,200+ reviewsClosed · opens Monday 8am
Stage 1, 2 and 3 figures and the price for your exact engine
Klarna0% finance availableBuy now, pay later on tuning, servicing and parts

Every car BMW 8 Series G1x (2018 -) 40d xDrive

Diesel · 3.0 litre · Maidstone, Kent

BMW 8 Series 40d xDrive remap320 to 360 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 BMW 8 Series 40d xDrive from 320 to 360 bhp and from 680 to 730 Nm: 40 bhp and 50 Nm more, on standard hardware. Diesels gain most in torque, so the change shows as pull from low revs and less gear-changing under load, not just a higher peak figure. 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 BMW 8 Series 40d xDrive makes, standard and remapped

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

320360
BHP · Power · +40
680730
NM · Torque · +50
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 360 BHP 730 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

BMW 8 Series G1x (2018 -): every engine we tune

All BMW 8 Series engines (32) · Every BMW we tune (5714) · All makes

Fixed price

Ask about your BMW 8 Series 40d xDrive

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

Before you send, want our discount codes?
Occasional offers on tuning, parts and servicing. No spam, and you can unsubscribe in one click.

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.

Loading the form…

Questions

BMW 8 Series 40d xDrive remap questions

How much power does a Stage 1 remap add to a BMW 8 Series 40d xDrive?

40 bhp and 50 Nm. Standard is 320 bhp / 680 Nm; Stage 1 is 360 bhp / 730 Nm. That is a 13% power gain and 7% more torque.

How do I get a price for a BMW 8 Series 40d xDrive 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.

Will a remap affect the DPF or AdBlue on a BMW 8 Series 40d xDrive?

No. A Stage 1 remap keeps every emissions system as the factory fitted it. We do not remove or disable the DPF, EGR or AdBlue system as part of a remap.

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
Meet the team

The team behind every job

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.

Newsletter

Offers on parts and tuning, first

A short email now and then: new vehicle support, parts deals, open days. Nothing daily.