Citroen C4 remapping
Typical Stage 1 figures for all 40 C4 engines, from 87bhp to 175bhp stock, with Stage 2 shown where the engine suits it.
C4 remapWe hold 40 Citroen C4 engines across 3 generations, 2004 on. Pick yours below: the 1.6 PureTech 167hp has the biggest typical Stage 1 gain, 165bhp stock to around 195 to 210bhp.
VEXEN remaps, diagnoses and codes the Citroen C4 at our unit in Fenton, Stoke-on-Trent. We hold 40 C4 engines across 3 generations, 2004 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: 135 to 140bhp, from 108bhp stock
C4 1.5 BlueHDi 110hp remapThe 1.5 BlueHDi 110hp has a DPF: a forced regeneration clears a blocked filter and keeps it in place
C4 1.5 BlueHDi 110hp DPF regenerationNo more blocked filter or DPF light, from £249
C4 1.5 BlueHDi 110hp DPF deleteNo more clogged or sticking EGR valve, from £249
C4 1.5 BlueHDi 110hp EGR deleteThe 1.5 BlueHDi 110hp carries AdBlue (SCR): no more AdBlue faults, from £249
C4 1.5 BlueHDi 110hp AdBlue deleteSupplied and fitted from £400
C4 CarPlayDealer-level diagnostics, coding, adaptations and service resets for the C4
Diagnostics and codingWritten into your C4 remap: pops and bangs £80 extra, limiter removal on request
C4 1.5 BlueHDi 110hp remapTypical Stage 1 figures for all 40 C4 engines, from 87bhp to 175bhp stock, with Stage 2 shown where the engine suits it.
C4 remap13 of the C4 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.
C4 DPF regenerationDPF delete for the 13 diesel C4 engines, from £249: no more blocked filter, regeneration cycles or DPF warning lights.
C4 DPF deleteEGR delete for the diesel C4, from £249: no more clogged or sticking EGR valve and less soot in the intake.
C4 EGR delete5 of the diesel C4 engines carry AdBlue (SCR). AdBlue delete from £249: no AdBlue to top up and no SCR faults.
C4 AdBlue deleteMk2 (2010 to 2018), C4 I (2004 to 2011): built before Citroen offered Apple CarPlay or Android Auto from the factory. We supply and fit both from £400.
C4 CarPlayDealer-level diagnostics for the C4: 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 C4 remap software. Pops and bangs are £80 on top of the remap price; message us about limiter removal for your engine.
C4 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.