Tire pressure, tire position on the roller, there are so many variables.The end number really doesn't matter much, you need to compare before and after numbers from the same dyno, preferably from the same day. There's always going to be someone with a high dyno sheet, doesn't necessarily mean their car is making more power it could just be that machine reads a little higher.
I'm using ECUTek, Berk HFC, FI CBE, Stillen G3 Intake:
Base run was: 303 HP @ 7400 / 244 TQ @ 5200
Final run was: 316 HP @ 7400 / 251 TQ @ 5100
My AFR wasn't too far off, so I was surprised by how much I gained actually.
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