Recently rebuilt my engine as I shot a rod through the block, now running fully forged internals. Bought the Glanza a month ago and the same problem seems to be occurring with the new engine. If I floor it, it offers no power but if I feather the throttle on an off I start to build boost and then goes well. Also been told that the black smoke coming out the exhaust is pretty bad, which I'm guessing would be the excess fuel? Only recently the cars been popping every so often, the EML also flickered a few times. I have changed the dizzy, arm, leads, plugs and coilpack, the problem still persists any help will be greatly appreciated! Also checking vacume pipes from off the turbo on the weekend, just a bit stuck now if it's not that?