Your PSI boost at 3-4k RPM?

Pooty51

Jun 21, 2025

Just picked up a used Raptor. I have a feeling I have a boost leak. I get no boost until I really punch it after 4k RPM’s. Is this normal? Zero psi at all the way up to 4k!? I thought the ProCal would wake it up and nothing. Decided today to check the boost finally. With the procal tune ford says 536 Foot pounds at only 3k rpm. Please do post your psi readings at 3-4k RPM’s. Just hard for me to believe this is normal

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Jun 24, 2025

I don’t have a Raptor, but do have the 2.7L V6. I get 0-6 psi of boost just driving around town. If I punch it, I get 14-18 psi at 3-4K rpm.

Kenneth

Jun 24, 2025

Yeah, our WildTrak's boost is most effected by the road's grade we're driving. On flat highways running 70-75mpg & 2500 - 3000rpm low single digit boost. Climbing over a 12,000 mtn pass we're up to 15-18psi.

Oil temp follow a similar pattern near 200deg in the flats and over 230+ climbing 2000ft hill.

Cheers

Deano Bronc

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