Turbo boost psi
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I was thinking that... your truck is 99 no reason it wouldn't have HX
But either way, you're right near the point of maxed out. My buddy used to push 45psi on his 12v stock hx35 and it would bark like crazy, more boost doesn't exactly mean more power. Only fuel you're adding is from the puck? stock injectors? I'd look into an hx40 or hybrid as mentioned above... unless you plan on running big injectors down the road.
But either way, you're right near the point of maxed out. My buddy used to push 45psi on his 12v stock hx35 and it would bark like crazy, more boost doesn't exactly mean more power. Only fuel you're adding is from the puck? stock injectors? I'd look into an hx40 or hybrid as mentioned above... unless you plan on running big injectors down the road.