Ecotek valves? Yes or NO

[domviz]

Seen these ecotek valves again in max power so wats the deal, do they work or not. People in this forum have been saying that they lost a court case and so dont work but the advert in maxpower i saw no disclaimer saying this.

So does anyone no if they work or not?

[Spirit_Styling]

what do they say they do? improve petrol consumption?

[domviz]

improve performance (obviouly a small improvement) and give better mpg.
http://www.ecotekplc.com/technical.htm

[Scott]

well look at it this way, if they did work why isnt EVERY car manufacturer on this earth making their own one to put on every car they sell

[domviz]

Cost, they just do it within the ecu

[Scott]

LMBO! © sax-p you think? considering they would mass make the valve it would cost them literally pennies to have them made.

and if they just do it within the ECU why dont they just do it? having a car with high mpg plus extra performance is a huge seller is it not?

[domviz]

why not bang lots of proformance parts on then, they could make them cheap enough

[Spirit_Styling]

cause they are not practical or economic enough.Theres no way they work lad think about it for 2 seconds.

[domviz]

sowhy do they hav recomendations from max power,revs ect..

[supersav]

As the boys, quite rightly say, this "ecotec" jobbie don't work.

As for the recomendations bit, it's all about money and the placibo effect.

if i get you to beleive it works then you'll tell others, it's a sales technique.

how it works it by using the vacum in the inlet manifold to open the valve.

At idle the engine has a vacum of arround -13 to -14psi (aprox) as you rev the engine by opening the throttle the vacum becomes less untill, at full throttle, the vacum in the manifold is 0 (neither vacum nor positive presure).

When you rev the engine then let off the throttle, the time it takes for the engine to return to idle is known as over run. In the over run condition the vacum in the manifold is more than idle vacum, thus, the extra vacum opens the "ecotec" valve.

Now, the reason the ecotec valve is no good is because in the factory ecu, it's programed in to cut off all the fuel going into the engine whilst in over run condition, untill the engine speed reaches somewhere arround 2000 to 1500rpm, then the fuel comes back in to stop the engine cutting out, and lets be honest, if there is no fuel going in then it can't save any more can it?

So, concidering the only time the valve and the fuel are active at the same time is when the engine is on over run bellow 2000rpm, just how much fuel can this save?

And finaly, with reguards to performance, if you use it on a turbo motor, like they say you can, then the boost presure in the manifold when you're on throttle will keep the valve closed.

Pete

[domviz]

Thanks for that, all i wanted to know if it worked or not and you've explained why it dont.

[dannsax]

cheeky begger smileys/smiley17.gif

cheer's for all the info matey you save us some cash

toward's my motor smileys/smiley4.gif

cheer's fella smileys/smiley2.gif

[Scott]

supersav i love you mate!

[starkie]

lol.. yeah thats a handy bit of info there!

[supersav]

no probs chaps,

I know i go on a bit but the way i see it is that, rather that just saying "no it's no good", if I explan why then those that don't know will learn a little and maby be able to use that information to understand other bits of the engine.

It's all for the good of the cause baby!!

Pete

[houstie]

Good info. especially for us guys who have no idea what the bloody things do

Good call cheers mate.

[powerhungry]

i know you say its a placebo effect but how comes before i touched the engine tuning wise i was getting roughly 330 miles to a tank. then all tuning parts went on. levelled out at about 240 a tank but the ecotek levelled it back out at 270. how come ???? this is average now mate

[supersav]

like i mentioned, the only time the valve is open is on over run, and fuel savingsonly with rpms bellow "aprox 2000rpm" so if you spend a lot of time in this condition then you'll save more fuel than the guy who is almost never in this state.

although it's worth concidering that if you had a dyno run producing say 150bhp, I'll put money on the fact that a month later, once it's all settled, you'd get a different figure. Engines do take time to settle after mods. but if you can prove beyond a shadow of a doubt that the "eco valve" can save the 30 miles per tank full then I'll gladly eat my words and re-investigate the thing.

Finaly.... the only way the valve can save on fuel is to make the engine run lean! Is it worth shortening the life of the engine just to gain a measly 30 miles per tank full??

Pete

[Spirit_Styling]

what about their power boost sprays? any update on their case?

[RIBstaff]

I used powerboost on both my vtr an s and would reccommend it! cleans all injectors etc an can deffo tell a small differance when done