1999 sti running 10psi?

[zarnah]

gòod stuff mate! Dont ever say club-sub hasnt got your back!

[Guest]

You guys are champs, saved me so much money! Club SUb is awesome!

[RAYDEO]

 gazzy2000 said:

After all the bollocks i have been through testing boosting issues, i wud question any WRX that runs 10 PSI boost, as it may well be in safe mode

The worst thing is "safe mode" dosent throw a CEL and runs the car really rich.

My car boosts at 10 PSI with no mods, yes there is a problem right, i cud easily fit a boost tap as a work around and get 15 PSI, but the car will still be in safe mode, most likely running rich as well.

So a boost tap wud only mask the problem.

I reckon you should fit a pill and make sure its running 15 PSI stock standard before fitting any boost taps or controllers etc. WIth your boost gauge Youd know straight away if u had 15 or not.

For more serious trouble shooting, when/if the ECU goes into safe mode it makes the duty cycle of the boost solenoid 0%, the best way i have found to test this is to put an LED across the Boost solenoid wires, run it into the cabin and tape on the dash, then watch the LED flash as the ECU dutys it on and off.

If it does not flash, well that means the ECU is not controlling it, meaning possibly its in safe mode for some reason.

Obviously your boost gauge will tell you that you are boosting 10 PSI in safe mode as well, but the LED tells you that its the ECU that is basically turning off boost control. If the LED flashes and you still have 10 PSI, well you rule out the safe mode theory and start looking at other possible causes.

i agree, my RA runs 9-10 psi when i put 95 in it.

and before anyone questions why i put 95 in it, 98 isnt always avilable in redneck little hick towns...

[Wiretap]

 RAYDEO']

[quote name='gazzy2000 said:

After all the bollocks i have been through testing boosting issues, i wud question any WRX that runs 10 PSI boost, as it may well be in safe mode

The worst thing is "safe mode" dosent throw a CEL and runs the car really rich.

My car boosts at 10 PSI with no mods, yes there is a problem right, i cud easily fit a boost tap as a work around and get 15 PSI, but the car will still be in safe mode, most likely running rich as well.

So a boost tap wud only mask the problem.

I reckon you should fit a pill and make sure its running 15 PSI stock standard before fitting any boost taps or controllers etc. WIth your boost gauge Youd know straight away if u had 15 or not.

For more serious trouble shooting, when/if the ECU goes into safe mode it makes the duty cycle of the boost solenoid 0%, the best way i have found to test this is to put an LED across the Boost solenoid wires, run it into the cabin and tape on the dash, then watch the LED flash as the ECU dutys it on and off.

If it does not flash, well that means the ECU is not controlling it, meaning possibly its in safe mode for some reason.

Obviously your boost gauge will tell you that you are boosting 10 PSI in safe mode as well, but the LED tells you that its the ECU that is basically turning off boost control. If the LED flashes and you still have 10 PSI, well you rule out the safe mode theory and start looking at other possible causes.

/quote]

i agree, my RA runs 9-10 psi when i put 95 in it.

and before anyone questions why i put 95 in it, 98 isnt always avilable in redneck little hick towns...

Ray, you missed an entire page of posts...

[Pappu1]

 gazzy2000 said:

After all the bollocks i have been through testing boosting issues, i wud question any WRX that runs 10 PSI boost, as it may well be in safe mode

The worst thing is "safe mode" dosent throw a CEL and runs the car really rich.

My car boosts at 10 PSI with no mods, yes there is a problem right, i cud easily fit a boost tap as a work around and get 15 PSI, but the car will still be in safe mode, most likely running rich as well.

So a boost tap wud only mask the problem.

I reckon you should fit a pill and make sure its running 15 PSI stock standard before fitting any boost taps or controllers etc. WIth your boost gauge Youd know straight away if u had 15 or not.

For more serious trouble shooting, when/if the ECU goes into safe mode it makes the duty cycle of the boost solenoid 0%, the best way i have found to test this is to put an LED across the Boost solenoid wires, run it into the cabin and tape on the dash, then watch the LED flash as the ECU dutys it on and off.

If it does not flash, well that means the ECU is not controlling it, meaning possibly its in safe mode for some reason.

Obviously your boost gauge will tell you that you are boosting 10 PSI in safe mode as well, but the LED tells you that its the ECU that is basically turning off boost control. If the LED flashes and you still have 10 PSI, well you rule out the safe mode theory and start looking at other possible causes.

the LED u put in there, was it a 12v LED (inbuilt resistance) or just a normal 0.7v LED lite?

just curious to know as its a bloody good tip bro!

also how often did it flash etc.. thanks

[RAYDEO]

 Wiretap']

[quote name='gazzy2000 said:

After all the bollocks i have been through testing boosting issues, i wud question any WRX that runs 10 PSI boost, as it may well be in safe mode

The worst thing is "safe mode" dosent throw a CEL and runs the car really rich.

My car boosts at 10 PSI with no mods, yes there is a problem right, i cud easily fit a boost tap as a work around and get 15 PSI, but the car will still be in safe mode, most likely running rich as well.

So a boost tap wud only mask the problem.

I reckon you should fit a pill and make sure its running 15 PSI stock standard before fitting any boost taps or controllers etc. WIth your boost gauge Youd know straight away if u had 15 or not.

For more serious trouble shooting, when/if the ECU goes into safe mode it makes the duty cycle of the boost solenoid 0%, the best way i have found to test this is to put an LED across the Boost solenoid wires, run it into the cabin and tape on the dash, then watch the LED flash as the ECU dutys it on and off.

If it does not flash, well that means the ECU is not controlling it, meaning possibly its in safe mode for some reason.

Obviously your boost gauge will tell you that you are boosting 10 PSI in safe mode as well, but the LED tells you that its the ECU that is basically turning off boost control. If the LED flashes and you still have 10 PSI, well you rule out the safe mode theory and start looking at other possible causes.

/quote]

i agree, my RA runs 9-10 psi when i put 95 in it.

and before anyone questions why i put 95 in it, 98 isnt always avilable in redneck little hick towns...

Ray, you missed an entire page of posts...

yes, yes i did....

[gazzy2000]

 pappu']

[quote name='gazzy2000 said:

After all the bollocks i have been through testing boosting issues, i wud question any WRX that runs 10 PSI boost, as it may well be in safe mode

The worst thing is "safe mode" dosent throw a CEL and runs the car really rich.

My car boosts at 10 PSI with no mods, yes there is a problem right, i cud easily fit a boost tap as a work around and get 15 PSI, but the car will still be in safe mode, most likely running rich as well.

So a boost tap wud only mask the problem.

I reckon you should fit a pill and make sure its running 15 PSI stock standard before fitting any boost taps or controllers etc. WIth your boost gauge Youd know straight away if u had 15 or not.

For more serious trouble shooting, when/if the ECU goes into safe mode it makes the duty cycle of the boost solenoid 0%, the best way i have found to test this is to put an LED across the Boost solenoid wires, run it into the cabin and tape on the dash, then watch the LED flash as the ECU dutys it on and off.

If it does not flash, well that means the ECU is not controlling it, meaning possibly its in safe mode for some reason.

Obviously your boost gauge will tell you that you are boosting 10 PSI in safe mode as well, but the LED tells you that its the ECU that is basically turning off boost control. If the LED flashes and you still have 10 PSI, well you rule out the safe mode theory and start looking at other possible causes.

/quote]

the LED u put in there, was it a 12v LED (inbuilt resistance) or just a normal 0.7v LED lite?

just curious to know as its a bloody good tip bro!

also how often did it flash etc.. thanks

Yip, its a 12v one from jaycar with built-in resistor. You can see the flashing lenght change with the duty cycle, its quite cool!

Yea, its a good way to see if you ECU is causing boost issues electronically and if not you can start looking else where with confidence.

PLUS - it really is the only way to tell if you are in safe mode or not, cause the ECU sure wont let you boost if it detects engine probs, and safe mode does not throw a CEL.

[Guest]

So how much is 1 Bar? i was boosting .7 bar and thought that was 10psi but when speedtech attached a mechanical boost guage they said 8psi. ill look tonight on how much i see it goes up to

[Koom]

1 Bar is 14.5 psi

[Pappu1]

 gazzy2000']

[quote name='gazzy2000 said:

After all the bollocks i have been through testing boosting issues, i wud question any WRX that runs 10 PSI boost, as it may well be in safe mode

The worst thing is "safe mode" dosent throw a CEL and runs the car really rich.

My car boosts at 10 PSI with no mods, yes there is a problem right, i cud easily fit a boost tap as a work around and get 15 PSI, but the car will still be in safe mode, most likely running rich as well.

So a boost tap wud only mask the problem.

I reckon you should fit a pill and make sure its running 15 PSI stock standard before fitting any boost taps or controllers etc. WIth your boost gauge Youd know straight away if u had 15 or not.

For more serious trouble shooting, when/if the ECU goes into safe mode it makes the duty cycle of the boost solenoid 0%, the best way i have found to test this is to put an LED across the Boost solenoid wires, run it into the cabin and tape on the dash, then watch the LED flash as the ECU dutys it on and off.

If it does not flash, well that means the ECU is not controlling it, meaning possibly its in safe mode for some reason.

Obviously your boost gauge will tell you that you are boosting 10 PSI in safe mode as well, but the LED tells you that its the ECU that is basically turning off boost control. If the LED flashes and you still have 10 PSI, well you rule out the safe mode theory and start looking at other possible causes.

/quote]

the LED u put in there, was it a 12v LED (inbuilt resistance) or just a normal 0.7v LED lite?

just curious to know as its a bloody good tip bro!

also how often did it flash etc.. thanks

Yip, its a 12v one from jaycar with built-in resistor. You can see the flashing lenght change with the duty cycle, its quite cool!

Yea, its a good way to see if you ECU is causing boost issues electronically and if not you can start looking else where with confidence.

PLUS - it really is the only way to tell if you are in safe mode or not, cause the ECU sure wont let you boost if it detects engine probs, and safe mode does not throw a CEL.

ugot any pic of the wiring where u pinched the wires to on the solenoid - i might do the same ay bro.. that is a seriously good point u made - i will use that as one of the steps in troubleshooting for similar cases if i see any

[gazzy2000]

 pappu']

[quote name='gazzy2000 said:

After all the bollocks i have been through testing boosting issues, i wud question any WRX that runs 10 PSI boost, as it may well be in safe mode

The worst thing is "safe mode" dosent throw a CEL and runs the car really rich.

My car boosts at 10 PSI with no mods, yes there is a problem right, i cud easily fit a boost tap as a work around and get 15 PSI, but the car will still be in safe mode, most likely running rich as well.

So a boost tap wud only mask the problem.

I reckon you should fit a pill and make sure its running 15 PSI stock standard before fitting any boost taps or controllers etc. WIth your boost gauge Youd know straight away if u had 15 or not.

For more serious trouble shooting, when/if the ECU goes into safe mode it makes the duty cycle of the boost solenoid 0%, the best way i have found to test this is to put an LED across the Boost solenoid wires, run it into the cabin and tape on the dash, then watch the LED flash as the ECU dutys it on and off.

If it does not flash, well that means the ECU is not controlling it, meaning possibly its in safe mode for some reason.

Obviously your boost gauge will tell you that you are boosting 10 PSI in safe mode as well, but the LED tells you that its the ECU that is basically turning off boost control. If the LED flashes and you still have 10 PSI, well you rule out the safe mode theory and start looking at other possible causes.

/quote]

the LED u put in there, was it a 12v LED (inbuilt resistance) or just a normal 0.7v LED lite?

just curious to know as its a bloody good tip bro!

also how often did it flash etc.. thanks

Yip, its a 12v one from jaycar with built-in resistor. You can see the flashing lenght change with the duty cycle, its quite cool!

Yea, its a good way to see if you ECU is causing boost issues electronically and if not you can start looking else where with confidence.

PLUS - it really is the only way to tell if you are in safe mode or not, cause the ECU sure wont let you boost if it detects engine probs, and safe mode does not throw a CEL.

ugot any pic of the wiring where u pinched the wires to on the solenoid - i might do the same ay bro.. that is a seriously good point u made - i will use that as one of the steps in troubleshooting for similar cases if i see any

I will take some pics after work tonight, plus have a look at my DIY knock sensor listening device in my TT to single thread, just plugged that in too and it works real good!

[pl0x]

could we not just reset the ECU then if it runs right boost we know its dropping to safe mode?

hmm will any LED do, ive got heaps sitting round home, and where would i put it on a TT B4

[Pappu1]

 pl0x said:

could we not just reset the ECU then if it runs right boost we know its dropping to safe mode?

hmm will any LED do, ive got heaps sitting round home, and where would i put it on a TT B4

that be a good point..

resset and see if runs ok for a bit b4 safe mode kicks in ...

yea gazzy2000 - will be good for the pics..

going to see ur listening device in the threads now lol..

[gazzy2000]

 pl0x said:

could we not just reset the ECU then if it runs right boost we know its dropping to safe mode?

hmm will any LED do, ive got heaps sitting round home, and where would i put it on a TT B4

Yea, you cud for sure, the boost gauge will tell you where you are at, of course you have to know what you max boost is and that your gauge is right.

Have to use special 12v LED with resistor wired in, jaycar has them.

TTs have two boost solenoids so i guess youd have to run two LEDs, get a green for primary and a red for secondary.

While your are at jaycar get the right meterage twin core cable (just small gauge speaker cable with do at a guess 4-5 meteres) and medium cable ties.

Plus i simply used scotch lock joiners to tap into the boost solenoid wiring ( i post pics tonight)

May be a mission to get to the secondary boost solenoid in the BBOD. But it really is worth it just to know where you are at with the boost etc.

[gazzy2000]

 pappu']

[quote name='pl0x said:

could we not just reset the ECU then if it runs right boost we know its dropping to safe mode?

hmm will any LED do, ive got heaps sitting round home, and where would i put it on a TT B4

/quote]

that be a good point..

resset and see if runs ok for a bit b4 safe mode kicks in ...

yea gazzy2000 - will be good for the pics..

going to see ur listening device in the threads now lol..

Yip pics 2nite no wuckers.

Just started a a whole thread on DIY knock sensor listening

[Pappu1]

 gazzy2000']

[quote name='pl0x said:

could we not just reset the ECU then if it runs right boost we know its dropping to safe mode?

hmm will any LED do, ive got heaps sitting round home, and where would i put it on a TT B4

/quote]

that be a good point..

resset and see if runs ok for a bit b4 safe mode kicks in ...

yea gazzy2000 - will be good for the pics..

going to see ur listening device in the threads now lol..

Yip pics 2nite no wuckers.

Just started a a whole thread on DIY knock sensor listening

awsum!!

;D

[gazzy2000]

Just about forgot.

** DONT GET A FLASHING LED ** just get a normal one

as a flashing one defeats the purpose, so ask at jaycar for a 12v NON flashing LED with resistor

[4ORGD]

isnt 1 bar 14.7psi? not 14.5

[funkytown]

 4ORGD said:

isnt 1 bar 14.7psi? not 14.5

your right.. but try to distinguish between 0.5 and 0.7 on a gauge.. sure kooms fingers just slipped

[gazzy2000]

Pic of boost solenoid LED wiring

(1) boost solenoid

(2) twin core cable going to LED on dash

(3) scotch lock joiners

(4) actual boost solenoid factory plug

Unplug the factory plug, turn key on and find which one is 12v, the other one will be the ECU switching wiring which turns the earth on and off to the noid thus controlling boost.

Positive of the LED (red) goes to 12v and black to the other wire (ECU switching wire).

I have to caution its not recommended to use a normal test light to probe the plug wires as damage can occur to the ECU. its just a caution so you cant pin anything on me.

[Pappu1]

looks good bro!!

[G-unit]

im also only getting 8psi or 0.5bar in the wagon, thats on 95 octane 2 and doesnt smell like its running rich (fumes)seems 2 boost fine tho, has the pill in the factory controller also, so i should be getting more boost?

[gazzy2000]

 G-unit said:

im also only getting 8psi or 0.5bar in the wagon, thats on 95 octane 2 and doesnt smell like its running rich (fumes)seems 2 boost fine tho, has the pill in the factory controller also, so i should be getting more boost?

Dunno, i shud point out my experiments/experiance with this has been on v3/4 v5/6 WRX STI

But it sure wudnt hurt to chuck a LED on the BS, least then you know your ECU is doing its thing and take it from there.

[G-unit]

it has a zerosports ecu has zerosports J2 on it, just went and checked it was there

[gazzy2000]

 G-unit said:

it has a zerosports ecu has zerosports J2 on it, just went and checked it was there

oh yip, well i cudnt tell you if it has a safe mode or whatever, my experiances are referring to stock ECUs

You cud still stick a LED across the BS, wudnt hurt, they are only $4.50