Hypermiling advice

[awais.9]

ehehehehe... thats why I prefer manual and CVT trannies. btw, prosmatec is kind of bit extra 'slow' in intial pick up, altis 1.8 auto goes "shuppp" after a speed breaker.

:s thats kind of the same drive as mine over here, I need to brake after 2 kms or so for a trucker or a chingchi. :sBut I accelerate in lower gears with half pedal, not in 5th gear all the time with the pedal fully pressed. Max I push is 3.5k rpm, not more. But in this drive, after the jee al ayi, I pushed 4th gear to 5.7k+ something.

pick isnt that bad if u floor it from zero,but then it goes till 4-5k rpm just to gain the speed of 40-50 though then in 2nd it reaches till 80

u dont need to floor much on motorway,max i would have gone till 4k i guess,once i reach 120 then it doesnt stays at 120 n starts going higher n if i ease the accelerator then it starts coming down n i have to floor it a little to gain back the speed

[smuzammilali]

Yep this practice is done by cabs, bt i didnt understand the logic behind... can you elobrate this technically...

I agree with this logic I never filled full gas cylinder instead filled Rs. 500 for my SE Saloon Automatic 2003 and it gives me around 75-85 KMs with 70-80% AC in rush hours in Karachi and it give me the same even if I filled the gas with Rs. 600 no visible difference may be the logic is pressure of the CNG? I'm not sure

I found Shell CNG station on III talwar Clifton the best in the city it always gives me 10-20km more than any other gas station for complete detail check out my recent thread about mileage calculation of my car:
https://www.pakwheels.com/forums/performance-modification-tune-up-preventive-maintenance/198696-download-automatic-mileage-calculator-need-expert-opinion-my-se-saloon-2003-a

[awais.9]

strange strange strange...
as i said b4,i got cng filled once at 20km n it got filled for 200rs +
so i dont think its a good idea

[asim510]

hmmm
isnt more pressure good,u get more mileage
anyways did u noticed increase in mileage with additional kg of cng filled?

no dear. pressure about 200-220 is recomended. As thats beyond the capacity of metal for which cylinder is made off. 280 is extremly dangerous, those bus drivers are put the life of passengers at a great risk.

[asim510]

let me Share my hypermilling technique:

i have Honda City 07 Model. and usually i got my cylinder refilled in 600rs with 76rs/kg. so around 7.5 kg and i easily gets the milage of 150 in city with AC on full time 100% (once i got 157 too ). my traveling is short distance like my office is just 5 km from my home and then my gym is around 2 km from home. so i dont have a long distance traveling.

What i do is:

There are 4 grills of AC air blower so i shut the 2 blowers which are on edges, keep the centre grills toward myself. keep AC Fan speed at 1 all the time. when em traveling with my wife then i put fan speed at 2 and one grill at my side and one at her.

Also i dont drive above 2.5rpm. usually i remain at 2rpm.

When ever i see that Signal is red i put my car in neutral and let is float till the signal. same goes if i see traffic jam.

weekly i wash car myself and clear its Airfilter by air blower just to ensure there might be no air blockage.

thats it

[awais.9]

i think it doesnt matters if u shut the side grills,u know why?
because while they are working,pressure gets distributed n center grills wont be working at full capacity but if u shut them then center grills will have full pressure,i tested it in my car n i also keep side ones shut n center ones towards myself but its difficult to adjust the angle since i am 6.1ft
btw city is in it self quite economical
i dont remember how they open air filter,is it easy to open n close by myself?
u can put ur car to neurtral but i cant so i just take my foot off the accelerator

anyways
i tested that when my car is at rest n then i floor it the pick is quite awesome but if am going slow n get an open road i floor it,previously pick was slow but it was because i wasnt flooring it fully
so i tested it last night,when you floor it more it shifts to lower gear,rpm shoots to 5k n u get the awesome pick
have been doing that last night since i was going to get cng filled anyways n after that flooring drive i got an average of 10km/kg which is not bad,with hypermiling i get 14km/kg,n with normal drive including flooring n hypermiling its around 12-13km/kg

[awais.9]

hypermiling does pays off
this time drive was with hypermiling,normal drive n flooring as well
got it filled at 7kg n then refilled for 5kg so dont know if total was 7kg or 8kg
but this time i got a reserve light at 105km n cylinder gave me 120km when switched to petrol though there was some left but switched to avoid low rpm issue thing that happened last time so it would have gone till 125km atleast n thats a wow in 7-8kg of cng on prosmatic
so lets just assume it was 7.5kg of cng
then
125/7.5 = 16.7km/kg:D

[asimsaim]

50 - 70 % Air Block ,, and WOT 3 - 4 % oxygen concentration at the exhaust pipe (measured from out side) .. and Switch tyres to stock size , (as printed on the pillar of car)

then see the wonders .

I increased my mileage from 15 kmpl to 25 kmlp ..

[awais.9]

i dont think that can ever happen with this car
u must be having some other car
i cant change tires,i already bought them + 195 n 185 dont have much difference
as for rest of the advice i couldnt understand it

[asim510]

50 - 70 % Air Block ,, and WOT 3 - 4 % oxygen concentration at the exhaust pipe (measured from out side) .. and Switch tyres to stock size , (as printed on the pillar of car)

then see the wonders .

I increased my mileage from 15 kmpl to 25 kmlp ..

Blocking the Air of car i mechanic did that when i had mehran, but in City i havnt tried, nor i want to no playing with computerized engines.

[awais.9]

cng was filled at 7.32kg n i got 98km this time n i was :o
but when i calculated
98/7.32=13.3km/kg
so its quite fine
i guess just noticing the km is not a good way to make calculations,km/kg shows the real picture

[awais.9]

pick on petrol is so awesome,it gets floored unintentionally
people on road driving in right lane drive so dead slow n r so stubborn that they would die but wouldnt give you space :mad: