Alright so on my sct x4 my ebp is reading about 60psi at idle and anywhere from 80-120psi while driving. I cleaned the sensor yesterday along with the tube. Nothing much happened what are the limits for this and should I get a new sensor.. What happens if the sensor reads too much pressure?
Exhaust back pressure
- Thread starter patoka7.3
- Start date
ghohouston
Active member
I'd say if vanes aren't stuck, the sensor needs to be replaced.
Towerguy
Member
KOEO = Key On Engine Off
Sorry, as stated koeo is key on engine off. 23 psi seems low. When driving monitor vgt duty cycle in percent. If at any time it sits at 14.99% or 84.99% they are sticking.
And when checking pressure at koeo, also check map and baro. All pressures should be damn close to each other. Ford says within 1.5 psi, but real world testing is usually between equal to .5 or .6 psi of eachother.
It will run terrible eitherway. I would leave it plugged in because at least the computer will se a change in pressure, even if its incorrect. These things barely move out of their own way when you forget to plug them in...
I unplugged it and my truck made more boost but the turbo barked every time. Sitting here idling my truck is around 57 psi on back pressure. My map kpa is about 14 psi at an idle. Also my vgt duty cycle does not move much away from about .65. Truck runs okay needs an injecot that I'm replacing tmrw.
More boost is not always better. If the vanes are staying closed longer trying to change ebp, it will build a bunch of boost pretty quick, but will run like a turd. Any ford dealer should have a sensor in stock, so why not just throw it on there while you are replacing the injector? I would also replace the pigtail when you replace the sonsor, as they tend to get corroded, wires melt, etc.
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