intake runner length

[Bradbury Gregory]

For the guy with the BMW 530i.

>From what I recall in the Metric Mechanic catalogue (BMW related only), the
volume of the intake plenum should be roughly equal to engine displacement.
The same is supposed to apply to the intake runners -- each runner being
equivalent to the volume in a single cylinder.  Anything grossly different
from this
will affect (probably negatively) the torque characteristics (how much & at
what
rpm level).

It's your car, but I wouldn't screw with this.  My car is very similar to
yours and I
can answer questions and such you may have, also related to thermal
reactors,
exhaust systems and such.  Aside for some bullet-proofing, leave the
injection as
it is, it works fine when set up properly (i.e. CO set with a meter to the
proper levels).

What are you trying to do and/or fix?

Gregory Bradbury
1981 ///M535i (E12)
101762.1703 at compuserve.com