I have a 2013 ST250. I fitted a Forge induction kit and remapped with bluefin. After having it on a RR it produced 250bhp by 4k (attached graph) but then stayed there until the redline. Obviously not right.
I then found out that the stupid AGS system was always closed on all but one...
Finally got round to getting my car mapped up, on Thursday my car went to Dyno-Tech in Ripley Derbyshire.
Full 3" turbo back de-cat Scorpion Exhaust
Forge front mount intercooler
Forge recirc valve
Samco boost hose kit
Dream Science induction kit
The car was already stage 1...
currently have this k&n air filter cone fitted :- http://www.amazon.co.uk/E-9289-Replacement-Air-Filter/dp/B00CR9WY38/ref=sr_1_16?ie=UTF8&qid=1432068002&sr=8-16&keywords=k%26n+air+filter which is the only modification i have at the minute.
I'm looking to change the hoses and wandering...
Found this page @ the weekend, impressive choice of mods and upgrades. Similar to what many other ST owners fit.
Interesting & impressive read:
Thought I would post a small video with soundcheck for my Forge.
Focus ST -06 Autotech Stage 2
Ferrita 2,5" stainless steel catback
Forge FMDVK04S bypassvalve with yellow spring
Running on studded wintertires so any weird backgroundnoise...