Well I got the XTI out for some road time today. 33 degrees, sunny and dry roads. It feels very strong and seems to be running well. AFR's look to be right where they should be but I was unable to record any data on either a 3rd or 4th gear pull. The damn Access Port cuts out when doing any pull while logging.
Junior mentioned to me that I should send it back to Cobb for a retrofit of the USB connector and a new cable. I will look into this but if anyone has any info could you please chime in here?
The other thing I saw today on the E85 tune with the colder 33 degree weather was 28.6 psi maximum boost. I was not logging but the AP recorded that as max boost! I think with the denser cold air here in Detroit I saw this additional 2+ psi of boost over the 26 psi map.