[Diy_efi] Re: Bouncing Map

[Mike]

I suppose it all depends on the tube size and length, you are not
looking for microsecond instantaneous response and the sensitivity
will not change. ie. We have done nothing to change sensor resolution.

A lot of methods of reducing oscillations is to use a restrictor,
such as in bleed valves for turbos - though this is more to allow
a peak pressure before the waste gate actuates.

If it was me I'd probably keep the same tube size you have currently
but maybe just add a restrictor where the tube meets the plenum,
try different sizes from say 0.5mm and up - simple cheap experiment,

rgds

mike


At 09:20 PM 3/12/2002 -0600, you wrote:
>I understand now. Will the smaller tube, while more resistant to
>oscillations, be less sensitive to small changes in the manifold vacuum? In
>other words, will drivability be sacrified in return for a stable reading at
>WOT?
>
>-Aaron
>
>Mike said:
>
>> What I mean is use a longer smaller pipe that is less likely to
>> allow internal oscilations, either due to pulsations from plenum
>> or due to expansion/contraction of the pipe - or have a larger
>> pipe but a small hole where it connects to plenum,
>> mike
>
>
>Aaron said:
>
>> By static column you just mean replace the vacuum hose with a piece of
>> pipe? I am a little confused by this.
>> Thanks again,
>> -Aaron
>
>
>
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