I pulled my 34' goose loaded to 15K gross (2 heavy Jeeps) this weekend on my wheeling trip. I was finally armed with the ATS housing, a JWVB, Tru-Cool, and a Dieselsite boost relief valve for good measure. On the way home up a long grade I was tugging right along and then it was time to downshift. Boost came up and all was good, but then I see the SES light. Darn it! It goes off a few more miles down the road and I realize that is the overboost code again. I plugged the SCT scanner in and confirm it was. Then I check the max reading on the boost gauge and it was 25 psi.
I thought that whole point of this valve was to prevent this silly light. What gives? Is this one of those POS snake oil parts? I mean it was only $45, but still I'm not happy about wasting money.

And BTW, the ATS housing is the shizzle, as is the JWVB. Very nice. Now for that 4" exhaust to help with the EGTs a little hopefully. I had to back out of it one time, sucks cause I was modocking right up the grade.

 

I was under the impression thats what it was for. Subsribing because I need one..

 

Are you talking about an over boost annihilator?

 

That thing is so simple it should work if it's gonna work.

Have you pulled on the little ring to make sure the valve isn't stuck?

 

Yes I am, Same thing, they call it a different name I guess.

Yes I did, it feels like it should be working to me, there's resistance when I pull it. And it's brand new, so it isn't gummed up or anything.

 

Hopefully some other DS overboost relief valve users chime in on there experiences with it.

 

Yes, that would be nice to hear from them.

Until then, and until I can get a hold of DS, I guess I'll get out the regulator and air hose and see if I can get it to do what it should be doing.

 

never had a problem with mine. it does say to every once in a while spray the little valve thing with some WD or other lube. you have to pull the little thing up and spray it. ive been boosting up to about 30 lbs on my stock turbo (i know) and never had the boost code set off..........

 

So does that actually let air out? Wouldn't that be a bit of a boost leak? The regulator type like the ITP doesn't... Here's a pic of mine (far left of the pic):

 

I ordered the "codes" tunes on my DP..Have yet to set off an overboost..Just another option.

 

yeah its kind of a blow of type boost code eliminator. it has a small hole on the outlet side that will only let the computer see about 19-20 lbs and the rest gets let out the valve.

on the no code tunes does the truck still defuel and not throw a code or does it keep the truck from defueling as well......

 

Kinda sorta it is I guess. I was concerned about that and read up between the two styles. The DS one and the ITP regulator one. What I came up with in my own little head was the DS 'leak' was very insignificant and not a problem. But it was supposedly more accurate. The regulator type regulates in a progressive manner meaning at the lower pressures it regulates too much. But right now I'm wondering if I should have went that route.

Yeah, I could always email Jody and pay a few $ for the codes tunes; but I didn't want to unless necessary.

 

There are two types one is just a preset pressure relief valve it lets air out at a certain pressure. The other that is more commonly used is just a regulator that is used to limit the psi that the MAP will see so that you don;t get an overboost code and defuel

 

Seem's like the DS regulator is in sense is like a wastegate of sorts, not a boost fooler, thats what I figure??

 

That is exactly how it works Mike.

From the DI site:


Boost Pressure Relief Valve

With this device installed between the intake manifold and the MAP sensor, boost pressures above 24PSI will be released so that the SES light is not set and the MAP sensor does not command the PCM to go in to a defueling mode. This is a mechanical device and as such, allows the SES light to function as designed.