Engines with a cubic capacity of 2.6 Litres (2,600 cc's) or more require two devices fitted in series. These are tuned individually as normal with the unit furthest from the manifold tuned first, whilst the other unit is locked off.

This 1978 Chevrolet Corvette belongs to Barclay who works for Ecotek and is a Classsic Corvette Club member; he says fitting a pair of CB-26P's (the 'Vette is 5.75 Litres - 350 cubic inches in the US) has transformed the cars performance, with improvements in responsiveness and acceleration as well as more than 20% fuel savings and improved emissions. "Best thing I ever did for the car" he tells us - ah ha! we hear you cry 'vested interest', hardly independent - quite right, just click here for an independent review by the American Car World section of Street Machine Magazine.. Among other things they said: "The Ecotek device improved the car’s round-town running noticeably".

If you are keen on Corvettes there's no better place to go than the Classic Corvette Club UK Web site: www.corvetteclub.org.uk there's just about everything you'll ever need to know available through the site and if you own a Corvette and aren't a member then you can, and should, join immediately!

Like all the pictures on this site, to view them full screen, simply click anywhere in the frame and when you're finished click 'Back' at the top left of your browser. 

Here is another example of two units fitted in series. This is an Opel Monza GSE and belongs to Stuart Denton. As you see the units have been fitted with Jubilee clips at each join and although this is not absolutely necessary it is something we recommend. You should always be sure that there are no air leaks and the servo hose is in good condition. This is not only important to ensure the Ecotek functions properly but because the power assistance to the braking system relies on it too.

Although the device bleeds some of the vacuum from the servo, the valve does not open fully until there is at least a vacuum of 18" of mercury, the vacuum needed to operate the brake servo is about 5" so there is no chance of the power assistance being affected.

Bentleys and Rolls Royce cars respond very well to the CB-26P's but the Turbo and Shadow models have very restricted manifold access, what is more the engines are so quiet that the high frequency vibration of the device can sometimes be heard from within the car! 

This Bentley Turbo has been fitted with a pair of specially silenced CB-26P's by Royce Service and Engineering, in Ashtead, Surrey. These classic cars do not have conventional servo or breather access and the devices need to be fitted directly in the manifold - a relatively simple drill and tap job is required and you'll need a splitter available from the Help Line at Ecotek - just call 01844 - 212939 and ask for a splitter (available in anodised gold, blue and red and in chrome).

Remember too that when you have more than one bank of cylinders - like this Jaguar XJS V12 - you need to make sure that the device (or devices) access each inlet manifold equally. 

Some Vee motors like the Chevy and the Bentley shown above have one manifold - the Jaguar V12 has two and the CB's are fitted on each end of the equaliser pipe. You can just see each CB-26P in the top centre of each manifold. Because they are on a balancing pipe tuning should be repeated on the first unit once the second has been fitted and tuned.

The Ecotek CB-26P is ideal for classic cars as it brings them right up to date with the latest technology to improve emissions and performance - on top of which the fuel savings make it that much less expensive to enjoy classic luxury motoring.

For another example of multiple fitting see the BMW M3's page.

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