just bought used, 2001 MT with 11,160 miles, 40.1 LMPG, new IMA pack installed last week. any suggestions? i think i'm going to add a vacuum gage first, then the brake light regen switch, then the heated air (cat. converter) intake. any other suggestions? what device are you using to read the error codes? as i was driving home, the check engine light came on, honda dealer said the cat. converter needs replacing, on order now.