this is not the right calculation method.....

you should have pumped your tank full without the dyno tab......then drive to kl and pump full again.....this time note down how much you pumped in the petrol as this is the usage of petrol from penang to kl without dyno tab

then do the same thing but using dyno tab this time......then minus the amounts and you will now know the amount saved....IF ANY.....this is the best way to estimate...assuming that your driving style and other variables are the same....

and I have used Dyno tab before and I can confirmed.....NO SAVINGS......

also, are you sure you are not promoting this.....you just joint today at 11.17am then post this thread at 11.22am.......i am just speculating that you are actually trying to promote this......if you are genuinely not promoting this.....sorry....

as you can see.....many forumers has given you the answer......NO SAVINGS........

from my personal experience.....NO SAVINGS........

you might wonder why so many forumer are giving solid direct answer of no savings.....its because this topic has been discussed so many times already in an out of this forum......if you try searching.....you will find your answers......