BMW Z4 remap
Weekend roadster or genuine daily driver, whichever this is, it starts with the right map for the B58 straight-six underneath it. Call 0161 302 5117 to talk through your Z4, or see the full range of BMW remapping we cover.
Every service available on the Z4
Stage 1 is a software-only calibration and the natural starting point for most Z4 M40i owners, available remotely via Bootmod3 or MHD or in person at Eccles. Stage 2 is available where supporting hardware is fitted, and we will advise honestly on whether it suits your car. We remap the automatic gearbox alongside the engine, launch control is codeable and adjustable, and a standalone rolling road session is available if you want a baseline pull without a full remap. An economy remap is also available for owners who use the Z4 for longer trips and want better consumption rather than more power.
Why Z4 owners remap
Two kinds of Z4 owner come through Eccles. The first uses the car as a genuine daily driver, roof down when the weather allows, and wants a sharper mid-range and quicker throttle response without the car losing any of its everyday manners. The second treats the Z4 as a dedicated weekend car, already familiar with what the B58 platform can hold, and wants the full extent of it verified on a dyno rather than assumed from what similar cars are claimed to produce online.
Both are solved on the same visit. A roadster does not need to compromise between usability and outright performance to get a proper calibration, and the same calibration work underpins either owner's outcome, just with a different conversation about what matters most.
Engine and stage options
The Z4 M40i runs the B58 3.0-litre turbocharged straight-six, producing between 335 and 340 bhp from the factory and sent to the rear wheels only. The factory calibration is set conservatively, as it has to be for an engine sold across a wide range of markets and fuel qualities, and there is genuine headroom above it once boost and fuelling are mapped properly on this specific platform. Stage 2 needs supporting hardware to unlock further gains safely.
A visit to Eccles
A Z4 session at Eccles starts with a baseline pull on the 4WD Bapro dyno, giving us an accurate figure for your specific car before anything is changed. The ECU is read and the map developed against that baseline, whether remapped remotely via Bootmod3 or MHD or in person via the bench. Verification pulls follow straight after on the same rollers, so the before-and-after comparison comes from the same session on the same equipment, not a different day or a different rig.
Frequently asked questions
How long will my Z4 be with you?
Do I need to do anything before I bring my Z4 in?
Can I watch the dyno session?
Is a remap covered by any kind of guarantee?
What if I only want the rolling road session and not a remap?
Book your Z4 in
Book your Z4 in. Contact us to arrange a date. We are a fixed facility at HNA Facilities, Plot Zero, James Nasmyth Way, Eccles, Manchester M30 0SF, and customers travel to us. Call 0161 302 5117.
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