H guys again thanks alot for all the information....... im thinking is ti even worth doing up the m42 engine anymore because the money i will be spending on the IS im better of starting with something stronger and which has more natrual power something like a s50 or 2.5i which has standard 190rwhp i think i do live in london guys and money well for pure preformance i have 2000 pounds thats parts and labour i do nto have a garage so i can not do the work myself...\
the cosworth engine 2.0Turbo are engines not to be messed around with when it comes to off the line, mid range and top end preformance and acceleration. They come with 350BHP stock and after that you also have the option to play around with the bugger to gain more power..............Now the question is......IS it worth working on such a small 1.8IS which only comes with 136bhp or shall i start of with somethign with abit more power i.e. m50b25 = 2.5i or the major s50
GUYS I NEED HELP !!!!!!