GR1MxREAPER
Well-Known Member
Right.. which is then why is said I mainly meant fuel pressure and then you asked did I trust it or check it with a mechanical gauge? The car has a fuel pressure sensor and monitors it and It is 100% accurate lol.. The boost /vac gauge is hit or miss I guess as I just looked more into it and it is 100% accurate with ford performance /roush and whipples box tunes. Other than that it says it may or may not be accurate. Not sure exactly what that means and why that would be for boost readings must be something in ford or ford assisted tubes (which whipple uses) but for my setup it was perfect and matched a gauge we installed under the hood On a Line to check it. My old car was a whipple though so maybe that’s why it was spot on. My new to me 2019 mustang will have an ESS kit on it later this summer so I I’ll enable the boost again and see how close it is to actual and we shall find out I guess. wasn’t trying to argue with you, I was just wondering is all. 
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