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I took my car to one shop and got it dynoed @ 291RWHP @ 353 and took it to another mustang shop that knew what they were doing they got it up to 334RWHP @ 405 torch. Nice to go some where that knows what they are doing.
I'm not trying to discredit or call BS, but you can make a dyno read anything you want it to. 34rwhp from a tune is pretty rediculous. N/A you should be right around 245-250rwhp. No where near 271.
I figured someone would say that but baseline to baseline they were the same with both dyno's. and it was a VERY noticeable diff in power when i left to.