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Performance, Tuning, and (LEGAL) RacingPost discussions about increasing performance, capabilities, and racing.
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16 on a Whippled 5.0. PSI is way less important than CFM...and any blower on the market is gonna cram in way more air than either of the twin turbo trucks possibly can.
My compound charged Cummins swapped F250 made 85psi on a hard street pull...if psi is all you’re after. But the CFM was there to back it up.
Funny thing about modern turbo engines is that they don’t run a boost “setting” per se. They operate off of torque demand, meaning the ecm adjusts engine parameters to achieve the desired torque. If in any given set of conditions it needs 12 psi to achieve the torque demanded then that’s all it’s going to make. If the next day the ambient temp and altitude changes, the very same truck with the very same tune might make 16. Aftermarket tunes may or may not change this.
Funny thing about modern turbo engines is that they don’t run a boost “setting” per se. They operate off of torque demand, meaning the ecm adjusts engine parameters to achieve the desired torque. If in any given set of conditions it needs 12 psi to achieve the torque demanded then that’s all it’s going to make. If the next day the ambient temp and altitude changes, the very same truck with the very same tune might make 16. Aftermarket tunes may or may not change this.
Just asking, isn't the stock tune limited to 16 psi?
12-14-2018, 11:14 PM
