finally getting a good average from my swift...
changed from stock plugs to IK20 almost a month and half back and i have observed a major difference in performance and mileage.
for ppl who will argue that changing plugs does not make difference, atleast for me it has proven otherwise.
stock plugs from suzuki dealerships = max mileage 11 kmpl
Denso Iridium IK20 = max mileage 12.8 kmpl
its 3rd tank filled after reserve light. almost 36 litres of fuel filled till auto stop. car is ran on 80% a/c with rpms roughly maintained between 2k-2.5k (with exceptions of short sprints upto 145 kmph every now and than since my office is on main beach avenue road)
although i think my car is running rich which i am planning to get a tune up done by carachi motors on 20k service (car is 16.3k at the moment).