I'm curious, Why would an intercooler work well on these engine? like any other restriction, an intercooler will cause a pressure drop even if density is improved by dropping the inlet air temp. Even if you compensate by changing the wastegate setting turbo lag will increase. Also, as the ALDA is a pressure device it wont respond to the increase in density correctly because of he pressure drop. If you crank up the ALDA to where it fuels for the intercooled air correctly it will over fuel at lower levels of boost.