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G25-550 Bolt on Daily Driver
442.8 bhp. And it still does the Monday commute.
Development is finished on the G25-550 Direct Bolt-On Turbo Kit for the 1.6 EcoBoost ST180. Off-the-shelf hardware. Factory water and oil lines. No fabrication, no custom manifold, and nothing taken away from how the car drives.
It has been a flat-out summer here — 900+ orders, 15 complete engine swaps and dozens of tuning kits out of the door, every single month. This is what we have been finishing in between.
A standard-looking ST180. 442.8 bhp.
The headline run on the MAXD-OUT dyno. Sound on.
The setup
Boost where you actually drive
1.1 bar at 2,500 rpm. In fifth. Under load. That is the number that matters pulling onto a slip road — not the one at 7,600.
- 1.1 bar already on tap by 2,500 rpm in a loaded 5th gear
- 1.45 bar at 3,250 rpm ( Limited by the mapping )
- 1.65 bar at 5,000 rpm ( Limited by the mapping )
- 1.95 bar peak at 7,600 rpm ( Limited by the mapping )
- Power and torque climbing from 2,650 all the way to 7,750 rpm — a 5,000 rpm window
- Rev limit kept to 7750 but we have run the 1.6 ecoboost motor to over 8450
Run 4 on the MAXD-OUT dyno, 440.5 bhp at 7,637 rpm. The best cool run of the day went on to make 442.8 bhp.
Ten pulls. Back to back. No cool-down.
Most headline figures are one cold run. We ran ten, back to back, until it was glowing.
Best run, cool: 442.8 bhp.
Worst run, glowing hot: 423.3 bhp.
Total drop-off across the whole session: 15 to 22 bhp.
The worst number this engine made all day is the number it makes when it has been abused.
Watch the number fall. Run 5 holds 437.3 bhp at 7,588 rpm — then, with the engine fully heat-soaked, the screen overwrites to 423.3 bhp. That is the whole drop, on camera, in one clip.
The G25-550 Direct Bolt-On Turbo Kit.
If it needs fabricating, it isn’t bolt-on
Dyno footage
Selected takes from the development session. Sound on.
What it costs
The full build behind the number
The car in this article is a complete engine build, not just the turbo kit. Everything that went into it, for context:
| Pumaspeed 1.6 EcoBoost Blue Top Engine | £5,255.00 |
| Cat Cams (mild) | £699.00 |
| Pumaspeed Racing Alloy Inlet Manifold | £579.00 |
| — red coating option | £120.00 |
| 38% Uprated Double Sealed Bosch Injectors Set | £599.99 |
| Pumaspeed Fiesta ST180 Quickspool Tubular Manifold | £679.99 |
| Pumaspeed G25-550 Direct Bolt-On Turbo Kit | £1,499.95 |
| R-Sport PRO Fiesta ST180 De-Cat Downpipe | £159.90 |
| Pumaspeed Vulcan V2 Cat Back (non-resonated) | £369.95 |
| R-Sport Pro 450 GEN2 Intercooler | £499.90 |
| R-Sport Fiesta ST180 Big Boost Pipe Kit | £269.99 |
| R-Sport Fiesta ST180 Large Bore Cross Over Pipe | £145.96 |
| R-Sport Fiesta 1.6 ST180 Cold Air Induction System | £109.99 |
| Parts subtotal | £10,988.62 |
| MAXD-OUT custom dyno tune (£650.00 + VAT) | £780.00 |
| Total as built | £11,768.62 |
All prices inc VAT and correct at the time of writing. The engine is the starting point for this build, not part of the turbo kit.
If your build starts with a 3, this is how it starts with a 4.
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