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Focus ST 250 Ecoboost 300 bhp conversion
Focus ST250 EcoBoost power upgrade PS300: the Pumaspeed performance tuning package
Focus ST250 EcoBoost: 300bhp and 370lb ft from the stock turbo.
Pumaspeed has finished development of the PS ST300 upgrade. With an insane 370lb ft of torque and 300bhp on a very accurate Dyno Dynamics rolling road, we think it is a job well done, and as far as the stock turbo can go without serious modification.
What is in the Stage 3 kit
- Focus ST250 EcoBoost Pumaspeed Edition X3 tuning box
- Pumaspeed Stage 1 hybrid turbocharger
- Milltek Sport cat-back sports exhaust system
- Milltek Sport high-flow downpipe (de-cat)
- Pumaspeed larger uprated intercooler
- K&N X-Stream uprated air filter element
Red: full bolt-on list, no remap. Green: the same car with the Pumaspeed Stage 3 remap. Blue (to follow): the car with zero modifications
Take a second or two to look at the power graph: an unbelievable 120bhp difference between the stock Ford map and the new, heavily developed Stage 3 remap at 6,750rpm. The extra power and torque create true any-gear driveability. Finally the car is worthy of the ST badge: a real giant-killer and a true successor to the five-cylinder, Volvo-engined Focus ST225.
The test car
The test car has the following bolt-on parts: Pumaspeed Stage 1 hybrid turbocharger, Milltek Sport cat-back sports exhaust, Milltek Sport high-flow downpipe, Pumaspeed larger uprated intercooler and a K&N uprated air filter element (not a full airbox or CAIS, so there is room for a little more).
The graph shows the huge transformation the full 300 power kit makes. The red line is the first dyno run with the full list of bolt-on parts and no remap; the green line is the same car with the same bolt-ons plus the Pumaspeed Stage 3 remap. The difference is quite astonishing: an additional 120bhp at 6,750rpm and an extra 85lb ft of torque at around 2,650rpm.
Why the hybrid turbo matters
The new Pumaspeed 300 power kit uses the latest developments in ST250 tuning. The hybrid turbo technology stretches peak power by roughly 10 to 15bhp over stock turbo levels, but more importantly it moves the point at which power drops off from a lowly 5,000rpm to a much higher level, giving a true, visible increase of 120bhp at 6,750rpm.
It is well known that the stock ST Focus turbo exhaust housing is far too small to allow serious airflow at medium to high rpm; the graph shows that maximum flow, even on the hybrid unit, is reached as low as 3,800rpm. Any gains above that threshold are small unless the perfect remap-to-turbo combination is used. Our new Stage 3 mapping and Stage 1 hybrid turbocharger are the perfect answer to push the boundary a little further. A true 300bhp from very simple bolt-on parts and a replacement air filter element.
Take a look at the video on Facebook: click here, or copy and paste this link into your browser: https://www.facebook.com/photo.php?v=10200718711281064&set=vb.391723550881677&type=2&theater.
The parts
MAXD Stage 1R tuning box, ST250 →MAXD Stage 2R tuning box, ST250 →ST250 350bhp X-37 power upgrade →All Focus ST250 tuning →
More photos: uprated injectors and the full ST tuning parts line-up.
The ST250 has since gone on to 350bhp with the X-37 hybrid turbo. Call 01924 360260 to talk about the right stage for your Focus ST.
