Boost Relief valves

[Gold 7.3]

Does anyone have any info on these? Do they really help or like the Wicked Wheel and just a gimmic to sell it? Thanks for any help

[harley1rocker]

yup,99 and up i beleive you really dont need one...on the 94-97 you need one with a chip and mods cuz you will defuel the truck

[jesilvas]

Well if you're pushing enough boost to cause the truck to defuel then yes it's a good idea.

[Jonboywv12]

i have a banks waste gate yeah its got some sound to it, but it also holds boost good and get rid of it quick

[jesilvas]

WG is diff from a boost relief valve.
"A wastegate is a valve that diverts exhaust gases away from the turbine wheel in a turbocharged engine system. Diversion of exhaust gases regulates the turbine speed, which in turn regulates the rotating speed of the compressor. The primary function of the wastegate is to regulate the maximum boost pressure in turbocharger systems, to protect the engine and the turbocharger."
http://www.dieselsite.com/index.asp?...PROD&ProdID=31
WGs physically limit boost. But if you don't want to actually reduce your boost, just limit what the MAP sensor sees and keep all the boost, then you get a boost relief valve.

[Jonboywv12]

Originally Posted by jesilvas

WG is diff from a boost relief valve.
"A wastegate is a valve that diverts exhaust gases away from the turbine wheel in a turbocharged engine system. Diversion of exhaust gases regulates the turbine speed, which in turn regulates the rotating speed of the compressor. The primary function of the wastegate is to regulate the maximum boost pressure in turbocharger systems, to protect the engine and the turbocharger."
http://www.dieselsite.com/index.asp?...PROD&ProdID=31
WGs physically limit boost. But if you don't want to actually reduce your boost, just limit what the MAP sensor sees and keep all the boost, then you get a boost relief valve.

that actually makes a lot of sense! i learned something! thanks

[dannanw]

also called a boost fooler. there is a cheap and effective one that is DIY i made it and dont see any codes.

[Jonboywv12]

Originally Posted by dannanw

also called a boost fooler. there is a cheap and effective one that is DIY i made it and dont see any codes.

what does a boost fooler have to do with a boost release valve? All a boost fooler does is keep the PCM from seeing boost levels over 20-25 (every truck is different) to keep it from throwing a check engine light.

[dannanw]

there is a version out there some place that relieves the presssure in the map line rather than just choke it down, I thought that what he was refering to.


I will go back to my corner now

[Dasaliac03]

If your looking for a boost fooler check out Sinisterdiesel.com, best 30$ ive spent yet

and as for a "boost relief valve", ive currently got a thread about a "blow off valve", is that what your talking about?