best is relative...if customer service and a lot of information is a factor...buy a pc3 from allen ulmer...it will come preloaded with a good map for your setup if you ask..
Do a search, this has been beat to death last year. Look on Ulmers page here and the pos tabout the Nytro performance parts. I believe the post is 6 pages long. You will see what works.
fyi...
allen is working on the pc5 now...more features and more evolved than the pc3...but I imagine there will be some tuning time necessary to dial it in...
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