SERT/SEST/TTS are all excellent EFI controllers, but when you make hardware changes with these you'll need to perform a dyno-tune. If you studied DJ products (PC) before you purchased SERT you were looking at the PCIII, as the PCV or PCV-AT were not available at that time. The PCV-AT changes everything, IMO, and adding another piece of hardware is no functional limitation.

 

I don't think Auto tune is all its cracked up to be, its realy not auto tune when you have to tote a lap top and fiddle with trim tables. If it was the cats meow there wouldn't be people ditching it in favor of the SERT or TTS.