it is cheaper in long run, it doesn't need tuning(that carby cars need every 2nd oil change to ensure optimal fuel economy and performance), it has simple tappets which need adjustment every 10000 km but in the long run outlast the carby cultus' hydraulic buckets which are hard to get right once they start making noise, it is better on cng and has better cold start abilities. this was engine maintenance, rest is same as carby cultus.