EGR and MAP

[Bruce Plecan]

| -> OEM uses less than that, there is no real flow, just enough vol. to
| -> move diapharm, some have a small vac leak, but not much.

|  I'd noticed most of the OEM setups seem to use those teeny hard plastic
| lines, ID probably less than 1/16".

That's what I was talking about, especially in reference to the MAP sensor,
and responsiveness.

|  Would 1/4" OD lines be sufficient to handle EGR requirements?  I don't
| have any figures for how much volume EGR requires.

For a vacuum source, to open the EGR valve yes.  If you mean for the exhaust
flow, No.  A late EGR system at low throttle openings can supply up to 12%
of the Intake Air Volume.
Grumpy