thanks a lot guys...
tomorrow my car will be checked with the help of the computer then i am going to replace the head gasket or if something else is the cause then i will change it too...
once my mechanic repairs this problem... comming tuesday we are going to instal a turbo timer, manual boost controller, blow off valve and i am going to replace the dirty k&n air filter with a new 3 inches filter...
and by the way here is a link where they sell k&n air filter for cheap price... many of u mught know this already but still for all the advice u guys gave me a small help from me
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http://cgi.ebay.com/ebaymotors/ws/eB...tem=2437719147