No Boost

[MYSTR33]

ok guys about four days ago, boost cut out on my skyline, it's mainly driven by my gf these days,

any way on tuesday she was driving and the BOV stop goin off, and the car had no boost..

so i checked for leaks or wat not, couldnt find a thing, took it around the block was only hitting 4psi on low and high setting (turbosmart 2 stage BC)..

so today i bid the bullet and took it to the mechanic Sonny does very good work left it there with him and see if my turbo was playing..

he checked the hoses took my turbo apart my exhaust off and nothing was out of place..

so his gonna get his hands on another AFM and see if thats the case...

or maybe the Power fc is playing up?

any ideas guys?

Mods are

PowerFC

FMIC

Turbo Back

KnN Pod

turbosmart 2 stage Boost controller

hkS SSQV on the intercooler pipe and also the stock BOV on the throttle

Cheerz in advance

Harry

Edited December 3, 2005 by MYSTR33

[GTRsean]

ok guys about four days ago, boost cut out on my skyline, it's mainly driven by my gf these days,

any way on tuesday she was driving and the BOV stop goin off, and the car had no boost..

so i checked for leaks or wat not, couldnt find a thing, took it around the block was only hitting 4psi on low and high setting (turbosmart 2 stage BC)..

so today i bid the bullet and took it to the mechanic Sonny does very good work left it there with him and see if my turbo was playing..

he checked the hoses took my turbo apart my exhaust off and nothing was out of place..

so his gonna get his hands on another AFM and see if thats the case...

or maybe the Power fc is playing up?

any ideas guys?

Mods are

PowerFC

FMIC

Turbo Back

KnN Pod

turbosmart 2 stage Boost controller

hkS SSQV on the intercooler pipe and also the stock BOV on the throttle

Cheerz in advance

Harry

<{POST_SNAPBACK}>

If you are still getting 4 PSI then the turb is still working.

Is it a stock turbo and what boost did you use?

Waste gate diaphram stuck open so just about all the exhaust gas goes by the wastegate?

[MYSTR33]

If you are still getting 4 PSI then the turb is still working.

Is it a stock turbo and what boost did you use?

Waste gate diaphram stuck open so just about all the exhaust gas goes by the wastegate?

<{POST_SNAPBACK}>

yeah stock turbo, was set to 8psi low settin and she was cruising on it...

he opened up the whole turbo nothing was wrong with the gate or turbine

dunno wtf is goin on..

Edited December 3, 2005 by MYSTR33

[AzzurrA]

try the basics first... you don't have a leak in your intercooler piping somewhere do you?

[MYSTR33]

try the basics first... you don't have a leak in your intercooler piping somewhere do you?

<{POST_SNAPBACK}>

all piping hoses looked at, not a thing

[MYSTR33]

no help at all?

[cerci]

whos sonny?

this isnt ultratune fairfeild is it?

[MYSTR33]

yeah dats him.

[The Mafia]

maybe the circlip that holds the actuator arm on the waste gate has come off. When this happened to me, the most boost the car made was 4 psi.

[MYSTR33]

maybe the circlip that holds the actuator arm on the waste gate has come off. When this happened to me, the most boost the car made was 4 psi.

<{POST_SNAPBACK}>

no, the turbo was taking apart twice looked at waste gate and actuator and a different one was fitted as well...

still nothing

goin to put the Factory ECU back on, maybe the POwer Fc is playin up

Edited December 6, 2005 by MYSTR33

[REdgtst]

I have a similar problem with mine... R u Sure the boost controller wiring is all good -> htats where my problem is.... CHeck boost controller wiring and connection...

[MYSTR33]

I have a similar problem with mine... R u Sure the boost controller wiring is all good -> htats where my problem is.... CHeck boost controller wiring and connection...

<{POST_SNAPBACK}>

was checked, was removed and still made no difference, if the computer makes no difference

[REdgtst]

I also have POwer fc.... My boost wiring was checked... didnt fix problem either (do you have A-lsd on your car). Maybe it is something to do with the A-lsd and PFC. I haver been told by tuner that i have a turbo problem... Dont want to spend all my money on new turbo if it snt broke!.. Anyone got any ideas?

[MYSTR33]

i saw the turbo the exhasut wheel is all chipped, another turbo was hooked up, we set it to around 20psi, and the turbo was demolished, so must have being the turbo..

then engine was compression tested and stuff everything was fine

so a new turbo is on it's way

Edited December 17, 2005 by MYSTR33

[paulr33]

the powerfc will be hardly to blame but you can certainly try going back to the stock ecu. the powerfc does not have "boost cut" or excess airflow protection like the stock ecu so it wont be that. things i would be looking for:

what comes up on the sensor sw/check page

what noises/things do you see when it gets to 4psi?

what does monitor show for KNOCK, INJDUTY, AIRFLOW, IGNTMNG when you only see 4psi and can't get any more ?

what boost controller?

have you tried bypassing the boost controller?

failing that ask a local forum member to perhaps come n have a quick look, could be something simple and obvious that everyone is missing

[MYSTR33]

the powerfc will be hardly to blame but you can certainly try going back to the stock ecu. the powerfc does not have "boost cut" or excess airflow protection like the stock ecu so it wont be that. things i would be looking for:

what comes up on the sensor sw/check page

what noises/things do you see when it gets to 4psi?

what does monitor show for KNOCK, INJDUTY, AIRFLOW, IGNTMNG when you only see 4psi and can't get any more ?

what boost controller?

have you tried bypassing the boost controller?

failing that ask a local forum member to perhaps come n have a quick look, could be something simple and obvious that everyone is missing

<{POST_SNAPBACK}>

hey paul,

cheers for that,

think we found the problem yo..

power Fc turned out to be fine...

was the blardy turbo..