Hi It seems I have miscalculated my next months salary, im about 40 quid short, of a complete kit of: malossi sport cast iron 70cc barrell + piston kit dellorto 19/21mm carb laser x pro stainless steel/ chromium exhaust new bearings + oil seals + labour for worker to fit them I was thinking... When I bought my MBK nitro off ebay, the seller chucked in a near mint condition restricted exhaust (with extra pipe coming off it) - the factory standard one if I dont buy the laser X pro exhaust and buy it next month and put this new restricted exhaust on for running in my new 70 kit - -will it cause problems by too much back pressure or something and over revving cos' the restrictors still in it? thanks for reading - Jnitro
