S250, S270, S220, L500 & H380 Stage 1 calibration for cruisers and workboats. Mobile to your marina.
Hyundai SeasAll marine diesels are a familiar sight in boatyards and commercial berths across Dorset and Hampshire, valued for their heavy-duty build and straightforward electronics. Factory tuning is set conservatively for global emissions and durability targets. 24Tuning delivers custom Stage 1 remapping for the S250, S270, S220, L500 and H380 ranges — performed on-board at your marina.
SeasAll fuelling and boost maps are tuned for the widest possible operating envelope rather than your specific boat, load and prop. A Stage 1 remap recovers usable torque and throttle response while respecting factory mechanical limits.
Coverage spans the mid-range S-series through to the larger L and H series:
| Engine / Model | Stock | Stage 1 (est.) | Gain | Notes |
|---|---|---|---|---|
| S270 (all variants) | 270 HP | ~295 HP | +~25 HP | Stage 1 software |
| S250 (all variants) | 250 HP | ~270 HP | +~20 HP | Stage 1 software |
| S220 (all variants) | 220 HP | ~238 HP | +~18 HP | Stage 1 software |
| H380G / H380P | 380 HP | ~408 HP | +~28 HP | Stage 1 software |
| L500 | 500 HP | ~540 HP | +~40 HP | Stage 1 software |
Figures are conservative estimates based on typical Stage 1 marine calibrations. Exact gains depend on engine condition, propeller, load and use case. Torque figures of 0 Nm from source databases are omitted.
We come to your marina, slipway, dry stack or private berth across Poole Harbour, Bournemouth, Southampton Water, Lymington, Hamble and the wider Dorset & Hampshire coast.
Hyundai SeasAll Stage 1 remapping from £799 including diagnostics, factory backup, custom calibration and on-board installation. Commercial L500 / H380 installs are quoted individually. Secure with a £50 deposit via online booking.
We cover the S250, S270 and S220 ranges plus the larger L500 and H380 commercial platforms. Confirm your exact model code and year when booking.
Yes. Our mobile marine engineers attend marinas, moorings and boatyards across Poole Harbour, Weymouth, Bournemouth and the wider Dorset coast.
For commercial L500 / H380 installations we run an extended diagnostic and duty-cycle review before calibrating, and always keep a full factory map backup.
Expect a conservative 8-11% improvement in usable power and torque, with the biggest difference felt in throttle response and mid-range pull rather than top speed.
Hyundai SeasAll diesels power everything from private cruisers to commercial workboats across Poole Harbour and Weymouth Bay. 24Tuning provides mobile Stage 1 calibration with factory backup and lifetime software warranty.
Book a marina visit or send your engine details for a confirmed quote.
Book a mobile marina remap or get a free compatibility check.