Hi all I have a customer of mine with a mk2 focus RS. It had a stage one map put on it back in October, now the weather has got cold, initial start up seems to be a issue. It starts and idles fine, but when you go to pull away it's very flat and unresponsive. No fault codes and once warmed up it runs fine. Has anyone else experienced this. Thanks

 

Check for smoke when you take the oil cap off, my friends was like this and it had 2 cracked piston ringlands.

still drove ok

 

There is no smoke and definitely not breathing