I've recently inquired around about tuning the C5 as mine is beginning to bog in ever gear right around 3500rpm or greater. I've heard that there is a company in Northern California that sells Corvette tuning software that runs about $500.00. You connect your pc directly to a port in your vette, and the software runs diagnostics and automatically tunes your vette accordingly. Has anyone heard of this type of software, or the company name? I realize that I may have a fuel pump problem, but this software lead sounds like something I might be interested in.