Mercedes-Benz GLS remapping
Typical Stage 1 figures for all 16 GLS engines, from 254bhp to 604bhp stock, with Stage 2 shown where the engine suits it.
GLS remapWe hold 16 Mercedes-Benz GLS engines across 2 generations, 2015 on. Pick yours below: the 4.0 Petrol 612hp has the biggest typical Stage 1 gain, 604bhp stock to around 665 to 705bhp.
VEXEN remaps, diagnoses and codes the Mercedes-Benz GLS at our unit in Fenton, Stoke-on-Trent. We hold 16 GLS engines across 2 generations, 2015 on. Stage 1 is £249 and Stage 2 is £349. Pick your engine below, or message us with your reg for the exact figure.

Typical Stage 1: 320 to 340bhp, from 282bhp stock
GLS 2.9 350d 286hp remapThe 2.9 350d 286hp has a DPF: a forced regeneration clears a blocked filter and keeps it in place
GLS 2.9 350d 286hp DPF regenerationNo more blocked filter or DPF light, from £249
GLS 2.9 350d 286hp DPF deleteNo more clogged or sticking EGR valve, from £249
GLS 2.9 350d 286hp EGR deleteThe 2.9 350d 286hp carries AdBlue (SCR): no more AdBlue faults, from £249
GLS 2.9 350d 286hp AdBlue deleteSupplied and fitted from £400
GLS CarPlayDealer-level diagnostics, coding, adaptations and service resets for the GLS
Diagnostics and codingWritten into your GLS remap: pops and bangs £80 extra, limiter removal on request
GLS 2.9 350d 286hp remapTypical Stage 1 figures for all 16 GLS engines, from 254bhp to 604bhp stock, with Stage 2 shown where the engine suits it.
GLS remap6 of the GLS engines on file are diesel, each with a diesel particulate filter. A forced regeneration clears the soot from a blocked filter and keeps it in place.
GLS DPF regenerationDPF delete for the 6 diesel GLS engines, from £249: no more blocked filter, regeneration cycles or DPF warning lights.
GLS DPF deleteEGR delete for the diesel GLS, from £249: no more clogged or sticking EGR valve and less soot in the intake.
GLS EGR delete6 of the diesel GLS engines carry AdBlue (SCR). AdBlue delete from £249: no AdBlue to top up and no SCR faults.
GLS AdBlue deleteX166 (2015 to 2019): built before Mercedes-Benz offered Apple CarPlay or Android Auto from the factory. We supply and fit both from £400.
GLS CarPlayDealer-level diagnostics for the GLS: full module scanning, fault investigation, live data, adaptations, service resets and vehicle configuration. We find out why a warning light is on, not just clear it.
Diagnostics and codingPops and bangs and limiter removal are added to the GLS remap software. Pops and bangs are £80 on top of the remap price; message us about limiter removal for your engine.
GLS remapStill have a question? Message us with your reg and what you would like done.
Pick the easiest way to reach Shane. WhatsApp is quickest; send your reg for an exact figure.