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Unsolicited advice - before ripping out parts and having to change the tune again wait for better weather.
Harsh unsolicited advice - I know 21st is supposed to be the best or 1 of the best, the reality is Jason’s tune just preformed better (on a DA calculator that run would have been 124 mph in better weather vs this run at 122mph in better weather) and I’d probably have him look at the tune. I get it, you probably had 21st do the the headers and it was probably just easier to have them throw it on a dyno and tune it.
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2022 Vivid Orange M6 LT1 - 2" ARH headers with cats and offroad setup (full system,), 3" ARH Pure Thunder mufflers, ported MSD intake, Soler 95mm tb, Rotofab CAI, E85 flex fuel, tuned by Jason@snackbartuning, Forgestar D5 18x8 fronts with 245/40/18 and Forgestar D5 17x10 rears with 275/40/17 summer tires.
Old car 2016 M6 SS - MSD intake, Rotofab, 2" ARH headers with cats, E85 with EFI Tuning. Best ET: 11.7@122mph
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