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  #1  
Old 01-26-2011, 10:25 PM
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Disabling ebpv

can I just unplug that lil white plug at the base of the turbo? can i try moving the ebpv actuator by hand while its hooked up? I haven't been seeing quite right boost lately (no gauges, but seat-o-the-pants meter is showing low boost ) And when I really get on it and up in the 2k plus rpms alls I hear is loud hissing, the higher the rpm, the louder the hiss. I can hear the turbo spool (a bit) but it seems lacking too. I'm thinking its either a malfunctioning/stuck ebpv or a pre turbo/ intercooler leak, since any post turbo leaks would have no affect, right? If I can move the ebpv actuator, which way is open and which is closed?

Thanks in advance,
Jason
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Old 01-26-2011, 10:56 PM
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sounds like a boost leak to me
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Old 01-26-2011, 11:17 PM
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Does your ebpv even come on in florida? j/k

I'm thinkin from what I've deduced through my searches (good ol google) that I can just unplug the pedestal and give it a shot... if the valve is the only power robber ive got, I dont want to have to do boots and up-pipes and all that jazz just yet!
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Old 01-27-2011, 12:28 AM
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OK, went and unplugged the ebpv harness. This did help a bit, the weird bog down I was experiencing at around 1500 rpms is gone, but in the high end (like 2500 rpm and when under a load, like going up hills) I heard a lil bit off hissin. I'll take pics of intercooler boots and whatnot in the morning, see if yall can notice anything that im too inexperienced to pick up. But I did another test to see if I'm losing something... mods and setup are in siggy. Did a 0 to 60 (semi boosted launch, wound up to 1500 rpm in 2wd and let her rip) to 16.46 seconds, give or take half a second. Is it just me or is this SLOW AS MOLASSES!?!? My ICP still isnt fixed but I doubt it would effect this THAT much... anybody else got 0-60 numbers with similar mods to compare?
TIA ya'll
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Old 01-27-2011, 08:27 AM
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ya man that is pretty slow i think that my grandma gets to 60mph faster than that! j/k i have an 03 ex 7.3 psd that does that same hissing noise almost sounds like a sqeeling noise like burning rubber and it does it right at 2500rpm in boost too. did unplugging the ebpv modual help that noise go away at all? i have a 4" straight pipe i wonder if that is making the difference?
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Old 01-27-2011, 08:54 AM
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whats an ebpv ? i deleted mine long ago. ha.
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Old 01-27-2011, 09:30 AM
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Quote:
Originally Posted by DieselPowerGary View Post
ya man that is pretty slow i think that my grandma gets to 60mph faster than that! j/k i have an 03 ex 7.3 psd that does that same hissing noise almost sounds like a sqeeling noise like burning rubber and it does it right at 2500rpm in boost too. did unplugging the ebpv modual help that noise go away at all? i have a 4" straight pipe i wonder if that is making the difference?
Unplugging the ebpv got rid of a lot of the load on the engine, but it was more from the 1500-2300 rpm range, the 2300+ load/leak is still there
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Old 01-27-2011, 09:54 AM
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You check the up pipes for leaks?

Sounds like a boost leak, and a drive pressure leak.

Did you unplug the EBP Valve at the base of the turbo, or the EBP Sensor at the front of the motor?
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Old 01-27-2011, 09:59 AM
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Send a message via Yahoo to Dave
Did you unplug this one?
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Old 01-27-2011, 10:11 AM
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yeah, i unplugged that one, at the base of the turbo. A pita to get to with them intercoller pipes there.

I need to crawl under the truck and check my up-pipes still. Its all mushy outside and I need a dang driveway or garage.

My intercooler boots are greasy/oily too, I'll take pic, Idk if they could leak that much
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