i got told by raceworx when he had a 1.3 in his red micra (before he sr20'd it) that the ga16 TB and injectors made a diffrance..i dont think he said it was a big diffrance but it made a diffrances...and that was on near standard 1.3 with a cat back, and filter...
dont know what it would do to a 1.0, i carnt see it beeing a wroth while mod if it didnt give much gian to a 1.3.