Land Rover Defender remap
Every Defender P400 that comes through Eccles is calibrated on our 4WD Bapro dyno, the only accurate way to load a permanent four-wheel-drive platform properly. Call 0161 302 5117.
Why the 4WD dyno matters for the Defender
The Defender is built for permanent four-wheel drive in a way few road-focused SUVs are, and that has a direct consequence for how it can be tuned properly. Most rolling roads are two-wheel-drive rigs that can only drive one axle at a time. Put a permanently four-wheel-drive vehicle like the Defender on one of those and you either run the vehicle in a mode it was never designed to operate in on the road, or you're working with data from an axle that isn't loaded the way it would be under real driving conditions. Neither gives a calibration developed against accurate data.
Our Bapro dynamometer drives all four wheels at once, so the baseline pull and the verification pulls that follow happen with the drivetrain doing exactly what it does on the road. For a vehicle built around genuine off-road and towing capability as much as on-road performance, that isn't a nice-to-have, it's how the job should be done.
How we map the Defender
We begin with a baseline pull on the 4WD Bapro dyno to record precisely what your Defender's engine is producing before any calibration work starts. The ECU is read and the existing map assessed, then a calibration is developed specifically for your vehicle's condition and the electric-supercharger-assisted straight-six it's running. Once the new map is applied, we run verification pulls back to back on the same rollers, confirming the figures hold under the same load conditions as the baseline.
Every service available beyond the Stage 1 map
Stage 1 developed on the dyno is the starting point for most Defender sessions, but the menu goes further. Stage 2 is available where supporting hardware suits the extra load. An economy-focused calibration is available for owners covering long distances or towing regularly, aimed at reducing fuel costs without giving up the character of the vehicle. Gearbox recalibration is available for sharper, more decisive shift behaviour, particularly relevant when the engine is also being remapped. Standalone rolling road sessions are available for a baseline pull or a post-modification check.
Stage 1 vs Stage 2
Stage 1 on the Defender P400 is software only. It recalibrates fuelling, boost and the electric-supercharger strategy within what the standard hardware supports, and for most owners it delivers the bulk of the usable gain. Stage 2 asks more of supporting hardware and unlocks further headroom once that's fitted. We'll advise honestly on whether Stage 2 makes sense for your specific vehicle and how you use it, rather than push it as a default.
Frequently asked questions
Why can't a two-roller dyno test my Defender properly?
How long does the dyno session itself take?
Do you use my car's actual data or a generic file?
What happens if the dyno run shows a problem with my car?
Can I book a rolling road session on my Defender without a remap?
Call to book a dyno slot. 0161 302 5117. We're at HNA Facilities, Plot Zero, James Nasmyth Way, Eccles, Manchester M30 0SF. This is a fixed facility, bring the vehicle to us. See the full range we cover on the Land Rover remapping hub.
Other Land Rover models we tune
Pick your model: