thank god i know what was that sound comming from it was the spark plugs ( destroyed ) and now i changed it to iradium spark plugs and tested it i didnt hear any sound and by the way i am glad that u reply to me and have a great opinion to me thx guys . and tomorro i'll drag with m3 3.2 L its 418hp wish me luck to get through him

i'll try 1st without nos and the 2nd time with nos wish me good luck