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Discussion Starter · #1 ·
Is there anyone out there that's either done before/after dyno and performance pages, or best case, done any before/after track runs?

The handheld tuners have typically been a drop in the bucket at ~$350 but considering it comes with a new PCM they're $1,200 and I'm curious about the performance gains.

As with the Diablo on my 6.1 it made a huge difference. The peak HP/TQ numbers they claim were not impressive but the .4 drop in ET were proof in the pudding. I'm not expecting .4 drop with the Trackhawk but I'd like to see if it's noticeable.
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