Questions tagged [boost]

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Mustang 2015 v4

Dears, I have a Ford Mustang V4. and I live in Saudi Arabia, and the weather is very hot. Ford recommends full synthetic oil, 5w30, and some engineers here say that it is not suitable for our climate, ...
1 vote
1 answer
3k views

OEM Boost control solenoid part number?

In my never ending quest to keep my aging 2004 WRX functional, I’ve started to look into my wobbling boost pressures. One suggestion I heard was that, after hundreds of thousands of miles, it’s ...
1 vote
0 answers
948 views

Corsa 1.7 DTI no Boost at low rpms

I own a Corsa c 1.7 DTI (Isuzu) engine which is having issues with boost. Problem describe: When i start driving from 0 rmp to 2.5 is going very low.. After 2.5 rpms it will start getting as normal, ...
3 votes
0 answers
39 views

Boost control using two valves with a vac and boost reference for wide boost control range

Can someone explain how the above boost control setup would work. The valve on the left uses a vac source applied to the top of the diaphram which would effectively help hold the spring closed at high ...
1 vote
1 answer
260 views

Audi TT Turbo and Dump Valve Issue

I've picked up a 1.8 TT Turbo Quattro which has been fitted with a K&N filter and dump valve by the previous owner. My (basic) understanding of how this works is that it should release the air ...
2 votes
2 answers
7k views

02 WRX loss of power/boost

2002 US market Subaru WRX with mods from the PO slowly lost boost over the course of a few weeks. I noticed the boost gauge not climbing as high as it usually does under normal conditions. After a ...