Dear all , first of all i wante to introduce myself. İ am from turkey İstanbul an Cooper S R56 owner. İ have a little (maybe a big) problem and i need your experiences.

My car is year 2010 174 hp , not LCİ ...

MY specs ; K&N air filter (in box) , catless downpipe (custom made but really experienced done) , forge dmp valve , and ecu remap ...

After this modifications and ecu remap car is around 200 hp and turbo pressure is max. 1,4 bar same as JCWs ...

My problem is after doing this modifications my car started to give a blue&white smoke ftom exhaust. Smoke is not coming on way . When engine is hot i am waiting a few minutes and when i fully throtle smoke is coming and again no smoke.

This is happened after ecu remap and i have directly turn back to standart fabrication map. But problem continues.

İ have also watch all videos from youtube 'cooper s catless downpipe' and most of them has a smoke.

İs it a normal situation , i am really worried about this.

İ have take my car to experienced services and most of them said Your valve stem seals are damaged and we have to open motor ?? İ cant trust them because it depands to earning money and cost of this is around 1.500 usd in Turkey.

İ need your support and helps , thanks...