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  1. Mk2 Engine, Exhaust and Induction
    Hello, So I've noticed a very popular upgrade for the ST225 - RS spark plugs. Can someone please explain me how can one differentiate a genuine RS spark plug versus an ST spark plug? I'm asking because in my local parts e-shop, if you search for RS or ST spark plugs, the results show the same...
  2. Focus ST Mk2 Non Technical Discussion
    Hello, Just signed up on here. I have a blue Focus ST225 MK2 08 model and looking to change sparks. I bought some RS stock ones as im running some mods. IS there a how to guide for sparks as i cannot seem to get into any of the " how to guides" ? Thanks Simon
  3. Mk2 Servicing and Maintenance
    Hi all, first post here! I've a 2006 Focus ST3 225 85k miles about to go in for its timing belt change. Given its age and mileage I'm looking to carry out some self service maintenance and TLC. Aside from the obvious oil and oil filter change, spark plugs, air filters, would anyone recommend...
  4. Mk3 Petrol Engine, Exhaust and Induction
    Mine is a 14 plate St3. The Book stamp for last service was 12000 miles ( it's now done 16000m ). Firstly, I doubt the plugs would have been changed at the service. Secondly, what plugs do you consider best and where from? The car is being Stage1 remapped by DNA Tuning next week.and I'd like...
  5. Mk2 Engine, Exhaust and Induction
    Iv just bought my new mk2 st3 06', when i put my foot down it feels as if its like a half boost then gets to a full boost if you get what i mean? Is that the way st's are ? Iv asked my mate whos got one his does the same is this maybe because the are been remapped and the clutch maybe cant take...
  6. Mk2 Servicing and Maintenance
    Does anyone know if you can use the standard RS 30BHP spark plug in a standard 225BHP ST MK2/3? I have heard that the smaller gap burns fuel better especialy if you use say a Bluefin conversion
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