Smart forfour remapping
Typical Stage 1 figures for all 10 forfour engines, from 60bhp to 175bhp stock, with Stage 2 shown where the engine suits it.
forfour remapWe hold 10 Smart forfour engines across 2 generations, 2004 to 2019. Pick yours below: the 1.5 Petrol 177hp has the biggest typical Stage 1 gain, 175bhp stock to around 210 to 220bhp.
VEXEN remaps, diagnoses and codes the Smart forfour at our unit in Fenton, Stoke-on-Trent. We hold 10 forfour engines across 2 generations, 2004 to 2019. 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: 115 to 120bhp, from 90bhp stock
forfour 0.9 Petrol 91hp remapYour 0.9 Petrol 91hp is petrol, so it has no DPF to regenerate
forfour DPF regenerationYour 0.9 Petrol 91hp is petrol, so it has no DPF
forfour DPF deleteYour 0.9 Petrol 91hp is petrol: we list EGR work on the diesel engines only
forfour EGR deleteSupplied and fitted from £400
forfour CarPlayDealer-level diagnostics, coding, adaptations and service resets for the forfour
Diagnostics and codingWritten into your forfour remap: pops and bangs £80 extra, limiter removal on request
forfour 0.9 Petrol 91hp remapTypical Stage 1 figures for all 10 forfour engines, from 60bhp to 175bhp stock, with Stage 2 shown where the engine suits it.
forfour remap2 of the forfour 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.
forfour DPF regenerationDPF delete for the 2 diesel forfour engines, from £249: no more blocked filter, regeneration cycles or DPF warning lights.
forfour DPF deleteEGR delete for the diesel forfour, from £249: no more clogged or sticking EGR valve and less soot in the intake.
forfour EGR deleteW453 (2014 to 2019), W454 (2004 to 2006): built before Smart offered Apple CarPlay or Android Auto from the factory. We supply and fit both from £400.
forfour CarPlayDealer-level diagnostics for the forfour: 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 forfour remap software. Pops and bangs are £80 on top of the remap price; message us about limiter removal for your engine.
forfour 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.