Turbo bar problem

[av starlet]

The car keep on running at1.2 bar but all the sudden it drops down to 0.6 bar, please advise what's the problem and where is the boost sensor? My car is EP91, thanks

 

[Fizturbo]

Whats your spec ?
Actuator mite be weak

 

[Fro]

What boost is it meant to be running? as above, spec?

 

[av starlet]

my Actuator is HKS

 

[Fro]

my Actuator is HKS

Mine too

But what boost has it been set to? And what other modifications do you have on the car?

 

[Fizturbo]

Mine too

x3

 

[jam]

Actuator problem may be a stuck wastegate flap have a check.

 

[Fizturbo]

bosst control ? faulty solonoid

 

[GP82]

but all of a sudden it drops down to 0.6 bar,

Check for leaks! Hose joiners from air filter to turbo, turbo outlet to throttlebody. Also check all piping is intact coming off the inlet manifold to where they go.

 

[av starlet]

Before wasn't like this.

 

[Fizturbo]

List ur spec mate

 

[av starlet]

is anyone know where is the boost sensor? Is it the problem of map sensor?

 

[jam]

what boost controller are you using?

 

[av starlet]

manual boost controller

 

[jam]

manual boost controller

Am 100%sure its the boost controller mate by pass it and return it to stock and check

 

[TurboDave]

100% sure is a bit strong isnt it?

We dont know any spec or anything, there is nothing to go on!

 

[av starlet]

Before wasn't like this

 

[jam]

Before wasn't like this

I have this problem before the manual bsc is not good after sometimes the valve become unstable and sometimes unscrew by itself same problem as mine.

 

[thefalls]

If it keeps on running 1.2 bar of boost on stock internals then i dont see your engine lasting long.[Maybe you have a forged engine,who knows]
Better list your engine spec,son;if you want to get good advice.

*edit As others have pointed out,it could be your manual boost controller.I would suggest to get a better one or return to stock and see the difference,then you may try other things from there.