V-Power really does make a difference!

[HartZ]

About a month ago now I had a chip and remap done by a company local to me, they also fitted an ITG maxogen for me too (just for the run) They asked me to fill up with normal unleaded petrol and had a run on the dyno before and after the work was done..

I went back a week later as the chip and remap needed to settle in.. I had unleaded in this time too, readings on the dyno came out with an +18bhp increase.. The following week they asked me to return and fill up with V-power this time, an extra +5bhp was recorded on the dyno chart just from using a better fuel, I had a look for myself and it was correct!

I never really thought it would make much of a difference, I wont go to anything else now apart from V-power, regardless of the ridiculous prices lol

Thanks for the interest,
Dan

 

[Fletcher]

Was the weather colder the following week?

 

[HartZ]

The dyno was taken place in an enclosed space so air conditions would of been the same

 

[MillerLight]

The dyno was taken place in an enclosed space so air conditions would of been the same

out of intrest where is the dyno??? as i want to put the corsa on 1 when ive done a few miles so i can get another one done after my re-map in maybe 6 months time.

 

[HartZ]

Evolve in luton mate.. They are just off sundon park road in an industrial park called 'enterprise'.. if i remember correctly lol

 

[MillerLight]

Evolve in luton mate.. They are just off sundon park road in an industrial park called 'enterprise'

cool thanks for that. may pop down there in a month or so

 

[HartZ]

No worries, if you want the postcode just to be on the safe side, PM me when your thinking of getting there

 

[Daz Clio Cup]

About a month ago now I had a chip and remap done by a company local to me, they also fitted an ITG maxogen for me too (just for the run) They asked me to fill up with normal unleaded petrol and had a run on the dyno before and after the work was done..

I went back a week later as the chip and remap needed to settle in.. I had unleaded in this time too, readings on the dyno came out with an +18bhp increase.. The following week they asked me to return and fill up with V-power this time, an extra +5bhp was recorded on the dyno chart just from using a better fuel, I had a look for myself and it was correct!

I never really thought it would make much of a difference, I wont go to anything else now apart from V-power, regardless of the ridiculous prices lol

Thanks for the interest,
Dan

I believe it works but only if the fuel is mapped so more advance can be put on.

Daz

 

[mattjk]

^ I think your right.
If the knock sensors doing its job it will adjust for either grades f fuel

 

[Daz Clio Cup]

^ I think your right.
If the knock sensors doing its job it will adjust for either grades f fuel

only if it's a modded map. i can't run normal unleaded (not as thou i'd want to) cos my omex is mapped on ultimate and i haven't configured the knock sensor

 

[bradfincham]

Thats absolute b****cks about it being in a normal place.

They have just altered the dyno correction factor.

Compare the Humidity and temperature readings for you 1st and 2nd runs. If you dont know how to work out relative humidity and saturated vapour pressure send me the values and il work it out for you.

 

[Muttley1]

I'm told that the V-power does make a difference although it depends on how the car is mapped! On a standard car as mine currently is, the difference wasn't noticed for several fill ups as the ECU has to change stats over time but on a properly mapped ecu I'm told on good authority that there is a difference!

 

[Daz Clio Cup]

Thats absolute b****cks about it being in a normal place.

They have just altered the dyno correction factor.

Compare the Humidity and temperature readings for you 1st and 2nd runs. If you dont know how to work out relative humidity and saturated vapour pressure send me the values and il work it out for you.

why would they do that? are they on commision from shell, i doubt it.

and working out humity and temp is really sad.

I'm running more advance than i should be because i use super unleaded. fact.

stop being a hater, and let the guy share his experience

 

[Daz Clio Cup]

I'm told that the V-power does make a difference although it depends on how the car is mapped! On a standard car as mine currently is, the difference wasn't noticed for several fill ups as the ECU has to change stats over time but on a properly mapped ecu I'm told on good authority that there is a difference!

i think you'll find an oe ecu can't detect octane rating, it may do it through the knock sensor, but i don't know. my old astra had an octane plug that u changed depending on fuel, but that's it.

 

[bradfincham]

Thats absolute b****cks about it being in a normal place.

They have just altered the dyno correction factor.

Compare the Humidity and temperature readings for you 1st and 2nd runs. If you dont know how to work out relative humidity and saturated vapour pressure send me the values and il work it out for you.

why would they do that? are they on commision from shell, i doubt it.

and working out humity and temp is really sad.

I'm running more advance than i should be because i use super unleaded. fact.

stop being a hater, and let the guy share his experience

You have to work out the pressure and humidity you fool to get an accurate account of the BHP.
When you have a car rolling roaded you should always put in a dyno correction factor for the same temperature and relative humidity. This way when you then add a mod such as cams or exhaust or induction kit you can go back to the same dyno on a different day where the pressure and humidity will be totally different and still compare the results.

The mickey mouse tuning and dyno companies do not add this correction factor and this is how they can sway the readings. If you go to any professional engine dyno or expensive rollling road you will get an accurate reading.

Understand what your talking about before you try and have a go at others please

Im not a hater at all, yes V Power will make a difference if the car has been specifically mapped for this. But its a very small percentage in power increase on something such as a 172.

 

[Fred@BTM]

so what was the total power gain?

 

[Daz Clio Cup]

i agree with you. I was saying you will get more power if the car is mapped to super unleaded. Yes i know you get more power from humidity.

 

[MillerLight]

Higher levers of humidity does not help performance, it’s the opposite

 

[mattjk]

Interesting thread I thought moisture was a benefit actually. Hence water/ethonol injection etc..

 

[MillerLight]

High levels of humidity makes the oxygen content of the air less dense. The lower the density of o2 the less explosive the air will be.

 

[Daz Clio Cup]

High levels of humidity makes the oxygen content of the air less dense. The lower the density of o2 the less explosive the air will be.

Humidity is a measure of water in air. Water has oxygen in it. Does your car perform worse on a foggy day or a dry day? I think you'll find it goes better on a foggy day due to water content.
Water injection is mainly used to cool the charge, but will help too

 

[Clgale88]

I wouldnt use normal unleadead crap fuel iv always used high octane or vpower or what ever super unleaded fuel they have at garages never use normal unleaded didnt run write at all.

 

[MillerLight]

High levels of humidity makes the oxygen content of the air less dense. The lower the density of o2 the less explosive the air will be.

Humidity is a measure of water in air. Water has oxygen in it. Does your car perform worse on a foggy day or a dry day? I think you'll find it goes better on a foggy day due to water content.
Water injection is mainly used to cool the charge, but will help too

Well its debatable. I’d say it doesn’t make much of a difference in modern engines as they have a modern ecu etc to control the inputs to the combustion, but on an old carb engine I’ve been told humidity and fog would effect its performance and willingness to rev.

Exhaust gasses do not contain o2 but do contain H20 so if its left after combustion imo its not optimising efficiency

 

[Djw John]

Sorry 18bhp from a chip and then 5bhp from v-power. Na not buying that, increases are far too high imo

 

[en035]

so you claim that only a remap gives you a +23 HP gain for a N/A car?

Sorry but it is impossible.

 

[mattjk]

Sorry 18bhp from a chip and then 5bhp from v-power. Na not buying that, increases are far too high imo

+1 I just couldnt be arsed to argue, let the baby have his bottle.

 

[Daz Clio Cup]

i wish it did. It wouldn't have cost me so much to get my power levels! Lol. V power is good but not 5 bhp on that engine.

 

[HartZ]

Sorry 18bhp from a chip and then 5bhp from v-power. Na not buying that, increases are far too high imo

+1 I just couldnt be arsed to argue, let the baby have his bottle.

Whos the baby?

Im only going by what the dyno said..

 

[Fred@BTM]

dyno's can be made to talk rubbish

 

[thecremeegg]

V power or equivalents definately do make a difference, my mum swears by it in her MX-5 and shes not really a petrol head

 

[Fred@BTM]

i think the majority of people are believing all the marketing behind the petrol, on a turbo car yeah ok

but on a NA POS french wagon? behave

 

[Daz Clio Cup]

i think the majority of people are believing all the marketing behind the petrol, on a turbo car yeah ok

but on a NA POS french wagon? behave

so are you saying you can't run more advance on high octane fuel?

 

[mattjk]

+1 I just couldnt be arsed to argue, let the baby have his bottle.

Whos the baby?

Im only going by what the dyno said..

Sorry didnt mean it in a rude way just you get it on here quite alot

Yeah as said you can run more ignition advance but the difference is negligable at best IMO not worth the extra pennies. But if it pacifies you then go ahead

Although I saw a poster today saying you get a free model ferrari car when you fill up with V power. Im getting myself a little toy LOL

 

[Daz Clio Cup]

Whos the baby?

Im only going by what the dyno said..

Sorry didnt mean it in a rude way just you get it on here quite alot

Yeah as said you can run more ignition advance but the difference is negligable at best IMO not worth the extra pennies. But if it pacifies you then go ahead

Although I saw a poster today saying you get a free model ferrari car when you fill up with V power. Im getting myself a little toy LOL

I got one yesterday!