Fuel Pressure Regulator - Any experience?

[Bill K 111]

For years it seems my lambda sensor hasn't been working. Apparently this means that it has been a fair bit richer than it should be (except at idle for some reason.) From a driving point of view, you'd never know as it drove beautifully and returned a minimum of 35mpg.

The MOT place wouldn't fudge it through on idle anymore so I put a new one in for the MOT and it passed the emissions test easily as it changed from being rich to super-lean. However, it just doesn't seem to have the torque that it had before. The knackered lambda (and all that fuel)ensured it also rarely went above 83 degs but now it's 87 most of the time.

I want my fuel back! Been considering one of these adjustable pressure regulators. Anyone tried one? Any success?

http://www.eliseparts.com/shop/index.php?main_page...

[Scuffers]

that makes no sence... lambda is only used for idle and steady state running, boot it and it will go open loop.

Also, if the lambda is working, no matter what you do to the fuel reg, the lambda will only adjust the fuel back to where it wants...

[Bill K 111]

Great - thanks Simon. So that rules that out. The temperature still creeps higher than I'm used to when crawling along at a steady 40mph which is expected due to it's new 'correct fuelling' at idle and steady throttle but, as you say, the lambda should have nothing to do with the acceleration fueling.

Of course...I only posted half the story. At the same time as the lambda, I fitted a new 4-2-1 manifold and high flow cat. So, my next move is to run it down to the rollers Slark Race Engineering and see exactly how lean it is.
The question is...If it IS too lean under load (and accepting that an Emerald and a re-map is the ideal answer) wouldn't one of these pressure boosters 'up the juice' when accelerating and then, as you say, the lambda just puts it back to normal when idling/steady throttle?

[Scuffers]

Bill K 111 said:

Great - thanks Simon. So that rules that out. The temperature still creeps higher than I'm used to when crawling along at a steady 40mph which is expected due to it's new 'correct fuelling' at idle and steady throttle but, as you say, the lambda should have nothing to do with the acceleration fueling.

Of course...I only posted half the story. At the same time as the lambda, I fitted a new 4-2-1 manifold and high flow cat. So, my next move is to run it down to the rollers Slark Race Engineering and see exactly how lean it is.
The question is...If it IS too lean under load (and accepting that an Emerald and a re-map is the ideal answer) wouldn't one of these pressure boosters 'up the juice' when accelerating and then, as you say, the lambda just puts it back to normal when idling/steady throttle?

you have just answered your own question.....

[Bill K 111]

Thanks. So...

Bill K 111 said:

Been considering one of these adjustable pressure regulators. Anyone tried one? Any success?

http://www.eliseparts.com/shop/index.php?main_page...