97 RSB Boost problems?

[Guest boostin]

Did it used to boost ok and has slowly degraded??

[gtlegacy]

the lst guy that had the car said when he got it it was 12 and 15 on factory ecu and then he beb'd it and he got 10 and 15 and now when i have it with factory and prova ecu (increased boost 14 17 ish??) i am getting 7-8 and 10-11 now

[gtlegacy]

when i got the car with the 2nd beb the guy b4 me had when i got rebuild on my motor the turbos that were on car were checked and had minimal play and the and i changed to a vf27 on secondary which had less play than the vf19 that was fitted

[Guest boostin]

Hard to say without seeing it sorry. It could be just about anything.

[gtlegacy]

i can see why subaru went back to single turbo lol y u ask if it was slowly degrading?

any1 else have any ideas i will try the bovs in the weekend and see how that goes

[Guest boostin]

A slow degrade points to a leak getting worse, like a perished BOV diaphragm or vac/boost hose. A sudden drop would be something like a turbo or a control solenoid.

[gtlegacy]

ok sweet will let you know hw i get on

[gtlegacy]

still got th problem changed both bovs and have the orange on primary side now and blue on secondary

[pl0x]

have you done the TT diagnostic thingy?

different to checking codes. use the other set of plugs

[gtlegacy]

oh true how do you do that? i have done the one with the black plugs and nothing and then reset with the green and the black connected how do you do the test/check your talking about ?

[Guest boostin]

Plug just the greens in and go for a drive. It will start flashing codes after a few minutes.

[gtlegacy]

if something is wrong? hwo does it work?

you plug the green in and drive

how far? fast? do you drive it hard?

what it meant to do it everything is ok ?

and if its not what happens

[Guest boostin]

If all is good it just flashes steadily.

If there's a fault it drops the engine out at the first set of lights you stop at.

Just note down the codes and do the usual testing/swapping/replacement.

Then clear memory and redo green test drive (called a D check).

[gtlegacy]

ok will do now do i just drive normally?

[Guest boostin]

Yup.

[gtlegacy]

ok i did that connected the 2 greens and drove for about 30secs and got constant flashes on the cel light so turned off and disconnected it

arounnd 4-5degress at the moment here and got 13psi so i dont know

[pl0x]

i think you plug in the black plugs only, then flick to "on" and the car will start making lots of weird noises lol.

You will most likely need someone who knows what to look for to check it tho.

it makes all the TT parts work, actuators move etc. cant tell you what to look for because i don't know

[THUNDA]

plug green ones in

go for a drive

give it abit of stick, dont drive like a nana

then it should start reading codes ifsomething is wrong

[gtlegacy]

oh ok i drove a bit like a nana lol will try again

[Guest boostin]

Just drive it like you would normally.

[gtlegacy]

yea i tried both i only just got out of the car park and then it started blinking at me so only just got a chance to get 2nd gear i did once before going average speed

still no codes just the consistent blinking

[Guest boostin]

There's no sensor faults then.

[gtlegacy]

so there is nothing wrong then? it should be boosting alot more than what i have maybe the boost gauge is faulty its an autometer with the white nylon tube maybe i have a kink that would cause it not to read properly right?

[Guest boostin]

All sensors are within expected parameters. That doesn't mean nothing is wrong. You really need to have it looked at by someone who knows them and has access to a good scan tool.

[gtlegacy]

oh ok i will do that