Yes its linear- but it makes boost a lot quicker on the low cam before the crossover due to back pressure in the cylinder head ( smaller cam lobe= not as much flow)- once it crosses to the high cam boost drops 2-3 psi then continues to build linearly until redline.
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I never knew that. Great post
"As I lay rubber down to street, I pray for traction I can keep. But if I spin and begin to slide, please oh please protect my ride."
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