I have an oppurtunity to get one of these for a *decent* price, but I've NEVER heard of anyone in the stang community using one. All i ever hear about it tweecer and PMS. Does anyone have experience with the Simple Digital Systems unit? Can anyone give me insight as to how it would interact with the 5.0 efi system? The guy selling it claims he used it to tune a turbo 5.0. Can anyone point me in a good resource for the system? Their website leaves little to be desired.