I have the following bolt-on modifications:
1. IPD plenum and the 74mm throttle body upgrade
2. FVD "Sound" exhaust
3. BMC air filter (it was part of the FVD tuning package)
4. To be installed in a few weeks - FVD long tube headers
I cannot speak for the other vendors of flash software but for FVD, you can get a tune based on your bolt-ons. I do not believe they offer an ECU flash for cars without the bolt-ons, but I could be wrong. I wished there was a simple option for the 986 Boxster where Cobb offered pre-loaded flashes on the device itself without having to upload/download software or flashes etc. But c'est la vie. It's worked well for me and enjoying it.
Get the Cayman S regardless of clutch or IMS. I heard they are better than an ECU flash.
