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Peter, MESA is great (archive)
[ Follow Ups ] [ 3-series (E21) Message Board ] [ Msg. Board FAQ ]
Posted by Mark on June 19, 2001 at 13:17:33:

In Reply to: Re: WUR '80 posted by Peter S on June 19, 2001 at 01:14:01:

I placed an order with Josh at Mesa performanc yesterday for a bunch of stuff to get my bimmer rockin. I thank you for suggesting them, they really know their stuff and made it easy to get what I needed.

Also, on your web site, the vacuum, plenum, diaphragm near the throttle body on the black post I think sends a signal of absolute manifold pressure to the computer which usees that data, in addition to the other sensors, primarily the O2, to set the fuel pressure by changing the input to the frequency valve. That small length of rubber that connects the intake manifold to the sensor should be cleaned out and replaced if necessary because the blockage will create a lower than normal signal to the computer. The main job of sensor I think has the job of enriching the mixture under full load. At least that's what I can gather from my experience.

How does that sound :)

Mark

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