MX313

I have been looking around in many places and can not seem to find an answer. Does anyone know how many pounds of boost the F150 EB's are producing? Thanks in advance guys!

DieselDawg

~12psi

MX313

Ok great. Thanks.

daystrom

12.2 is the most I could get out of them according to Torque.

engineermike

On my scangauge, I was showing nearly 15 psi, but only during the first "surge" of power you feel. After that, it pulls it down to ~10 psi and it appears to do it by modulating the throttle blade. Not the most efficient way to reduce boost, which is why a tune MIGHT net a bunch of power. My theory is that Ford programmed it with a big spike in boost down low to get the big torque numbers, then slacked off up top.

NASSTY

Mine spikes to 15psi, then it drops and holds at 12psi for a few seconds, then drops to around 10 until it upshifts.Then it repeats in the next gear.
I've only had my boost gauge hooked up for 1 day so I haven't had much time to play around with it yet.

engineermike

Good to hear. I thought I was either going crazy or had erroneous readings. It's very odd indeed. The stranger part is the throttle blade modulating to limit power/boost when the pedal is on the floor.

user_name

Your altitude and air density make a pretty large difference in the boost you see. You won't see much up in the mountains for example.

93Cobra#2771

iTrader: (2)

Throttle blade modulation isn't new in fords bag of tricks. They've been doing it that way on mustangs for several years.

engineermike

@user_name, I believe this is a feedback controller, meaning the ECM senses and targets a boost level. So, changes in altitude shouldn't make a difference.

@cobra, why do they modulate the throttle on NA mustangs? Seems to me like they would control the wastegate to change the boost level. For any given boost level, it makes more power to vent more exhaust rather than restrict air.