help on a new age sti
 

Bought a limited edition sti 06 plate when I first started to drive it was sweet but then I put petrol in and it started spluttering I was told that the car is completely standard so has not been mapped but then was told by a specialist that if I put the standard petrol in once mapped it could cause it to splutter and that I need to put v power in which I have done but it still splutters.
So is there any way I could tell if my car has been mapped?
Or any advice on what else it could be? I'm

What limited edition is it?

All sti's should be driven on the best fuel you can buy, I would always suggest a 99ron, any photos?

You should be using shells V power or tescos momentum only

You guys are lucky, over here in NI we dont have anything like v power or tesco 99. All we have is super which is supposed to be 97 ron but in all honestly I doubt its even that high.

In that case you need bottles of octane booster at every fill up or to get your car mapped for lower octane fuel.

Any uk car can run fine on 97 ron.

Ok, so why does this guys car run rough on 97 ron then? My uk sti runs 99 ron without any trouble:thumb:

I'm new to this site so not sure how to upload any pics although I have put 1 on my profile.