cant watch the vid but built a few , try get opcom ( ebay) but crank sensors are really common and only use a gen one !! these engines do not like anything aftermarket like coilpacks or sensors , the ecu are very common for a earth prob ( if its a mk4 astra google ecu earth mod ) also if it still has the breather box on the back of the engine i would remove this or use a proper metal splitter , the front engine breather from block to head can stop the engine reving up and make loads of prob remove it from both ends and clean it out , sorry cant be more help