Has anyone installed one of the performance chip's on their car? If so was there any gain in HP or Milage as advertised? I have a hard time beliving that something so inexpensive will work as stated. It is very difficult to find anything for my 06'.
D3 in Stanton, CA seems to be one of the premier hot rodders of Cadillacs. It looks like they will be at SEMA this year, so I'll drop by and see their stuff in person, but they do offer dyno tuning and pre flashed ECM's. There may be others doing teh dyno tuning also.
You can check out D3 Research & Design, Cadillac's catalog @ www.D3cadillac.com
They originally provided parts for the V-Series, but I believe they are now looking at the standard XLR.
The address is 2829 Grundy Ave., Signal Hill, CA
I installed their Stage 1 Power Package in the spring before R-III, and have enjoyed the increased HP.