EBPV delete

[kbradner]

What exactly does the ebpv delete do? What benefits does it have? Disadvantages? How hard is it to do and how do you do it? Thanks in advance

[fire57dan]

I second the question. I am also wondering because it seems to be talked about a lot here.

[horses2]

My humble thoughts are:

the EBPV is a movable plate in the turbo outlet housing. It will "close" restricting exhaust flow thus quickening the warm up of the engine. The action of the EBPV is controlled by the PCM based on a bunch of input values (ambient temp, throttle position, etc).

One could submit that this is unnecessary for a vehicle in warmer climates. Also, some suggest that the plate presents a significant restriction to exhaust flow. The actuator rod could develop a leak creating a nusiance oil leak. Also with the multi postion chips available, one could just get a "high idle" selection to accomplish the same thing.

My impression is that the delete is done to ensure maximum exhaust flow, and thus maximize gains from exhaust & turbo mods.
Disadvantage would seem to be losing a warm up feature.
To do the mod, one could disable the actuator and gut the housing, or one could order a housing without the EBPV and a turbo pedestal without the actuator assembly, both available from site sponsors and others.
If you can swap a turbo, you can swap the EBPV parts. The "gutting" takes a bit of ability, but well within the capabilites of most.

If the more seasoned, and experienced mod members would like to comment, please feel free to increase my knowledge.

[morrisbeer]

The EBPV delete is where you pull the turbo and pedestal, drill or grind off the 2 rivets that hold the EBPV butterfly to the shaft and remove the whole thing. I'm not sure how much you know about the EBPV system, but during cold temps outside, oil pressure engages the butterflies to block off part of your exhaust causing a load on the engine, which in turn causes the motor or idle up slightly and warm up quicker. There is a shaft that goes through the exhaust side of the turbo and this shaft has a plate that blocks off part of the exhaust flow. There has been talk of small reductions in EGT's and such. I have gutted mine and just like the way the truck is no longer going to high idle and making more noise and such. I like to control the high idle with my DP chip. It takes just a minute or so longer to warm up with out the EBPV. I was also starting to get a small leak where the small shaft comes out of the pedestal to actuate the EBPV. It just made scence to take it apart, cut off that shaft and plug the hole with a pipe plug. Not having the EBPV anymore, i didnt need the actuater. I know this has been a bit long winded. If you need more info, please let me know.

Tyson

[ndrorydr]

For me it was one of the best mods. I honestly feel my truck warms up faster now. The hardest part I found was getting a good 12pt socket to loosen off the somewhat frozen bolts. Once I got them out the rivets on the valve were easy to file/grind off. Most people use a 20mm freeze plug, but I used a 1/2" stainless bolt and double SS nuts to plug the hole with some Oatey thread dope smeared in there. If I ever change the turbo I will get a non-ebpv pedestal. For now I just unplugged the actuator.

Tim