Haven't done nothing yet as my car is into 2nd free service [currently at 4.5k]. My ride need to check using PDT as the fuel consumption is on the high side...half tank can go 100-120km only. Seem that from full tank to half tank the needle move too fast and slowing down from half tank to empty.
As you said, need to solve all problem before start modding.
Me too going to 2nd service but i drive seldom so my car now only 3K km.
About the needle which do down fast then slow after half tank, mine too.
Don't worry about that as some of the car is like that depend on the tank shape i guess.
cuz my bro's waja (7-8 years car) also like that but the fuel consumption is ok.
My fuel consumption i think is ok cuz it's a 1.6 car.
You dont measure by half tank or full tank, measure by how much $$ or litre you pump in.
RM10 approximate can go 60km.
and oh please dont think it's rediculus about the fuel consumption like this,
cuz fyi my iswara 1.3ltr (10years old) also having RM10 to 60km.
unless this is your 1st car or u driving a small cc car previously,
or else u need to accept higher fuel consumptioin for 1.6ltr car.
u can switch you meter to see
Approximate
Fuel
Consumption, which mine is showing 8.7.
if yours is higher then maybe some problem.
Other than what i told u the story on top, then u better go and check.