[chunky]

hi all

has anyone fitted a ecotek valve to their car.check out this site. www.ecotekplc.com
seens too good to be true. like hear some opinions please.

[dsc68]

Quote:

Originally posted by chunky
seens too good to be true.

Trust your instincts on this one.

Their technical blurb proclaims that it reduces CO2 emissions by 21%. In a perfect engine the only emissions are CO2 and H2O as a result of perfect combustion.

So how does a device that supposedly improves combustion result in reduced CO2 emissions? If it worked as promised it should actually INCREASE CO2 emissions.

[macncheese]

Turbulance is something you want in the combustion chamber, not it the intake manifold. The concept behind inducing turbulence is that it promotes mixing of the air and fuel for a more uniform mixture, which can then burn more completely.

Problem with this product is that in most modern cars, the fuel is inject fairly close to the cylinder head in hopes of keeping the fuel atomized on its short(er) trip to the combustion chamber.

--
Cheese

[chunky]

my instincts tell me it's all a gimmick but they claim they have proof and trading standards can prove it works.
i have also heard that it makes the engine run lean hence lower emissions, but also can it mean the vavles can burn out?????

[tekdude]

I too am suspicious of any bolt-on product that claims to improve fuel economy while upping performance at the same time. In modern fuel-injected engines, the computer maintains the proper air/fule mixture for "satisfactory" performance, idle, driveability, etc., while producing low emissions. This means most cars today (at least in the US) already run on the ragged edge of too lean-- which can lead to hesitation, surging at cruising speed, stalling when hot, and so on. Unless my car's engine was so clapped out or otherwise defective that it was no longer capable of maintaining the proper mixture, I don't see how this product could do what it says.

Most performance parts work to improve throttle response and power via either enrichment of the mixture, playing with the ignition advance curve and/or by increasing the total volume of the fuel/air mixture charge the engine can ingest. Normally, increased performance typically comes at the cost of decreased economy, and often richer (not leaner) emissions.

"Free" HP and economy gains are those which don't cost anything in terms of worsened fuel economy or decreased engine life. Those that fall into this category are things like intake/exhaust mods, balanced/lightened/polished engine internals, porting and polishing of intake and exhasut tracks, and underdrive accessory pulleys.

Lightening the overall weight of the car is also considered "free", since it costs nothing in terms of fuel economy, and actually pays dividends in better handling, quicker acceleration, and less wear on tires, suspension, etc.

I would love to see dyno/rolling road results on this product showing actual HP or torque increases, or even a smoothing out of power delivery under the curve. All I saw were cars which, for whatever reason, were running too rich for peak performance have their mixtures brought back into line with what the car's own computer should have set in the first place.

[Andy@Ross-Tech.com]

I discussed this mod in a VW forum and here's what seems to be the gist of it:

The valve lets in air while the engine is under vacuum, effectively serving as another throttle, and may reduce pumping losses slightly. It definitely lets in unmetered air in systems with MAF sensors (ours does not have this). I can't really see how this thing would affect a system like ours at all. I don't buy the air turbulence angle and the MAP sensor will accurately account for airflow whether it comes in through a hole (ecotek) or through the throttle.