Steppler

Ok guys be real gentle with me, maybe this could be the daftest question ever posted..........................but, all the talk of V Power giving better performance and better MPG has got me thinking. What causes the better economy?? I think my car has been running on V Power now for a week or so, and i must admit i'm getting better economy. Now why is this? Is it because the fuel is burning more efficiantly, therefore the ecu isn't overfuelling as much now (running leaner) and giving more performance??

Maybe a blonde moment i know, but i thought i'd ask

Mark

moneys

iTrader: (5)

I,m sorry to ask this but if your final sentance you say "maybe a blonde moment" now thats only something a woman would say but you sign off as mark , So does this mean your a shirt lifter

Steppler

LOL. no, but after living with a blonde bird for this long, i think things are rubbing off on me !!!!!

marmski

I have noticed a better MPG out of my 06 STi since i been running v-power (and im sure i have been treating the car a little harder too). Not sure on the 'not over fuelling' as much though, since i am getting a few pops from the exhaust on overun now which i have never had before. (love the sound though!! )

Steppler

Yeah i get the pops too (as you say great sound). Noticed it after PPP. I think mine are a little quieter now though.

AlexT

If you were running Tesco99 previously then you would acheive better economy with V-Power. The Tesco fuel is a bio-ethanol fuel and basically contains less energy so the bigger bang (so to speak) created by a similar amount of fuel is what would give V-Power the slightly better economy.

Also noticed that switching across from Tesco to V-Power has reduced injector duty whilst also managing a slight increase in bhp and torque. Proof of more power, more economy.

Would be interesting to see if other "mappers" have had similar results...?

Anders_WR1

iTrader: (8)

How much extra bhp and torque are you talking, if you don't mind me asking?

Cheers

Anders

WRX300MAN

Bio ethanol or not, but V-power has better fuel economy . . .Optimax, used to have better fuel economy over the Tesco . . . .Why is this . . .No f^cking clue!

davedipster

Calorific value?

harvey

iTrader: (48)

Much as AlexT states. The V-Power will have more energy/ gram than a bio- ethanol so it would follow that mpg improved. How this compares with the previous Optimax, as yet I am unsure.

AlexT

8bhp and 10ftlb torque with a drop of 6% in injector duty for a stage 3 STI.

Anders_WR1

iTrader: (8)

Cheers Alex, useful info.

Anders