Check out this site

 

Auto Express have mentioned it on their site. It seems to have very good reports with some meaningful test results. I can see how it would make a rather rich running SIT a bit faster. My exhaust is black with soot. If I can find a fitter, I prepared to give it a go. Watch this space ...

 

Looks very interesting

"The Ecotek CB-26P is a non-return valve and it fits on your intake manifold vacuum hose to creating an air vortex within the manifold, keeping the fuel suspended in the air."

It bleeds air into the manifold, at low throttle (-ve pressure), leaning up the mixture somewhat (and creating turbulence).
Should have no effect when on-boost

This is just what the Scooby needs -- slightly leaner mixture during gentle cruising and no adverse affect when on boost

There some good (independant) reviews on their site, incl one from an EVO (IV/V/VII) owner

Any Scooby owners out there tried one yet ?

 

Update to my last reply

Not sure if the standard ECU will use the lambda sensor at part throttle and notice the mixture is a bit leaner and so try to pump in bit more fuel (which we don't want).

Or if it will just use the readings from the airflow meter and so won't notice the slight amount of extra air being supplied through the valve when at -ve pressure.

Still sounds well worth a try.

 

Sorry to say the ecu uses both but mainly lambda on cruise so it will compensate and therefore no gain.

Bob

 

Their other claim is that this also provides turbulence in the manifold.
I'm a bit skeptical about this as there's quite a lot of turbulence in there already
(with the pulsing of the cylinders etc)
(Or maybe the cylinders suck in the airflow so fast thats its smoother than I think).

Anyway, the device would need to be connected near the centre of the manifold, especially on the Scoob with its long branches to each side of the engine, and there isn't any suitable 'large' diameter vacum pipe at the centre.

 

I'm curious about this too... anyone willing to give it a try? I might, but only when the warranty runs out

Richard

 

This thread seemed to die away with no real conclusion.
Anyone try this product.

Cheers

 

I have one on my car,check out the thread in general q's,i've been a bit busy but will try to answer the questions 2night.
cheers

 

Have e-mailed Ecotek asking a few of the questions. Will post when I get an answer.

 

Have fitted device to a 1994 factory modified WRX (possibly ECU/engine? - VIN Plate ref.)

Other mods include
-KN induction kit (resinator box removed)
-Magnex back box.
-Ecotek fitted to manifold vaccum hose (possibly should be fitted to plenum
chamber) using 95 RON fuel.

All fitted at same time!- not good idea?

Ecotek results so far

- Performance: engine note changed, now very quiet & smooth sounding . Not
sure about power increase as
still need to reset ECU.
- CO2 Levels: lower
- Economy: gained possibly 2/3mpg. Will
relocate fitting to plenum
-to see if has greater effect?

 

Hi - friend at work has one fitted on his MX5 - he's gained 3mpg!

Maybe they should come as standard on cars from now on...

marcus

 

Have taken the plunge and bought one.
Will post results later.

Nige K

[This message has been edited by NIGE K (edited 01 December 2000).]

 

I have taken mine off for the weekend and will be doing a regular 200 mile journey where i get 25mpg constantly with it doing its stuff,will post results mon or tues.
c ya