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  #1  
Old 03-27-2010, 09:37 PM
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removing the exhaust back pressure valve???

is their any advantage by removal of the exhaust back pressure valve?
doing 4" upgrade, since i'll have it all apart, figured i'd ask.
thanks guys!

it's for my early 99!
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  #2  
Old 03-27-2010, 11:31 PM
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Re: removing the exhaust back pressure valve???

Drop in EGT and backpressure. I grind the rivets down, remove the butterfly and shaft, then put a core plug in the one shaft hole. I then bore the exhaust adaptor to 3.00", stock its 2.830" or so.
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Old 03-27-2010, 11:46 PM
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Re: removing the exhaust back pressure valve???

Quote:
Originally Posted by outlaw5.0 View Post
Drop in EGT and backpressure. I grind the rivets down, remove the butterfly and shaft, then put a core plug in the one shaft hole. I then bore the exhaust adaptor to 3.00", stock its 2.830" or so.


i did it on my early 99 when i changed my turbo a while back. works good unless you live in a cold climate.
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Old 03-28-2010, 12:06 AM
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Re: removing the exhaust back pressure valve???

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Originally Posted by li'l tugger View Post


i did it on my early 99 when i changed my turbo a while back. works good unless you live in a cold climate.
what about the cold weather? i don't drive the truck in winter. as for cold, temps i drive in here are around 40*
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  #5  
Old 03-28-2010, 12:14 AM
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Re: removing the exhaust back pressure valve???

do i have to disconnect any harness?
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Old 03-28-2010, 02:15 AM
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Re: removing the exhaust back pressure valve???

It never affected my truck in the winter time.
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Old 03-28-2010, 05:56 AM
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Re: removing the exhaust back pressure valve???

In cold weather lack of a EVBP causes it to take longer to warm up as you loose that restriction. Some also use them as a poor man exhaust brake.
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Old 03-28-2010, 06:21 AM
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Re: removing the exhaust back pressure valve???

I got rid of my ebpv last year and havent had any problems with it warming up, im from WI also.
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Old 03-28-2010, 07:37 AM
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Re: removing the exhaust back pressure valve???

It would be interesting to manually control one and see the effects it has on time to get to the temp it normally fully opens at, on a idling engine, at outside temps of 32 F and 0 F. It would be interesting to see how much of an effect it has. It sure no question it kills the power of an already sluggish engine when cold. Not to mention they do seem to stick at times and even when fully open impair exhaust flow.
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Old 03-28-2010, 10:11 AM
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Re: removing the exhaust back pressure valve???

no EBPV or fuel bowl in my truck for 2 years now..where i live it get damn cold quite often but the ole girl starts every morning with out a problem..i let her idle for 5 to 10 minutes in the am...15 minutes when its 20 bellow..then driver easy to the out side of town,,by then she is good to go..
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