Quote:
Originally Posted by dayofpain
turbo hole bigger than upipe
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That is not as much of a problem as the other way around, but still - there must be something to be gained - spool and a couple horses. The last 1/2" of the uppipe can be ported for transition, but that's still a quick change in diameter. Maybe a bigger uppipe would be worth it - the turbo housing designer seems to think you need a bigger one (based on the hole size he spec'd).