Something is not right with that 2088 XDF. Send me a PM with your regular email account and I will send you the 2088 XDF that I use.

Rick

The DLL file that you seek is on the Tuner Pro RT web site. The XDF files are spread out here on Gearhead-EFI, the PCMHacking.net site, the LS1Tech site and a github repository.

Which XDF are you...