Now the 2013 season has passed its halfway with Sebastien Vettel leading the ranks, but yet with the title fight wide open, Formula 1 2013 Poll: Update by Half Season new major technical changes were announced for 2014 (source and quotes from: F1.com): Engine – The 2.4-litre normally-aspirated V8 engines will be replaced by 1.6-litre V6 turbo engines that…