Great thread... I've had a turboback for a while with no other performance mods and I've been on the fence about what I was going to do next.. I've been leaning strong toward the Access-port, but I like what I see from the Vishnu graphs better.
I realize with Vishnu you're stuck with whatever map they give you but there's only the Stage 2 and Stage 2.5 for Cobb (and what I've heard the 2.5 isn't that much better) Stage 3 has been pushed back so many times and then just vanished from their website all together. At least I know Vishnu has higher level packages that I could go to (even if it mean sending my ECU back in)
Anyone here running the Vishnu stages that can offer a comparison to the Cobb stages?