not really. each cylinder is in a different stroke at any one
time so it's quite impossible 2 get any 2 to be doing the same
thing at any given time. it is possible to seriously bend some
internals with bad ignition timing but then again that is a problem
with any motor, not juz boxers or engines with diff extractor
lengths.
shouldn't fool around with compression too much either. as it is,
the uneven extractors are giving a different set of parameters to
the way the engine works. having unique CRs for each chamber isn't
really an option to counteract this effect. in fact, u gonna give
the ecu will have a hard time figuring out wad inputs to give the
injectors and wad 2 do with the the map readings because it now has
to get its readings from each individual cylinder due to the
variations in CR.
well, its really how the gases meet at the down pipe, not how the
exhaust is designed. a typically well set up exhaust system should
consist of a set of extractors with equal flow rates relative to
the primary and secondary pipes as well as a sufficiently free
flowing center and muffler pipes.
all the above holds unless i'm not thinking properly tonite
