Mumbai-Nagercoil expresses via Krpuram and Renigunta shall be up graded to Super Fast Expresses and Nagercoil arrival time advanced by 3 to 4 hours.Via Krpuram have to be diverted via Kalluru and Salem-Namakkal route skipping Gootty and Erode and so saved 2 hours and avoid loca reversal time at Erode.