Remember, you get what you pay for. A free map is just that. Free. I'm sure the person who put it out there will back up his map when your engine blows. I'm sure he'll be there to give you money towards the rebuild.
You need to get a custom MAP for your car to be really safe. Even that is not perfect.
Read on here and see how many have had pistons go bad in a newer ej257 with tunes.
You need to be safe and pay the man for a good MAP.
Dave helps out here for free, you might as well support him and buy from him.
I do that with my Tuner and promote his name when ever I can. He even pays to be on this site in the Vendor Forum. www.tuningallaince.com
201,000miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
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