Originally Posted by shivaswrath
a piggy back on top of a flash?
that's a sure fire way to confuse your ECU...don't think it's possible, but willing to watch others with this experiment!
No, I mean either piggyback/flash. Do you know people who upgraded RB turbo running both flash and piggyback? I heard my Sweden fd said about that as neither piggyback nor flash can match with upgraded RB turbo, should run both to get the power.