LSchicago
Well-Known Member
I wasn't referring to boost spikes, and my throttle doesn't close between shifts.Our pulleys are specified in diameter, but we state an estimated boost level at 7200 rpm on a standard Coyote application using a normal G2 kit. The larger intercooler option will raise peak boost a small amount, as will the G3 head unit vs a G2.
These pulleys are also rated based on our own 2018 mustang here in PHX, AZ. Density altitude and weather will affect boost numbers. If you are in Colorado in 8k DA you will see less boost as the air is less dense vs if you are in Maryland in 0 DA with very cold and dense air. In Brad’s case he ran in 800ft DA and 42 degrees ambient. These are near optimal conditions and therefore will likely see inflated boost numbers.
The proper way to rate a pulley is also not simply “peak” boost. This can be misleading as the engine will see a boost spike as the throttle begins to close before a shift which will artificially raise the boost. This is why if you command a shift at 7400 rpm you should read boost up to 7200 before the throttle begins to close.
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