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#1 |
(40 percent vodka)
Real Name: Joel Join Date: Oct 2006
Location: Reno, NV
Posts: 4,446
Car: 2004WRX
Class: Baby-Hauler/GroceryGetter
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I posted this problem on NASIOC with no avail. Whats happening is that I am only getting 9.2psi of boost max. I have a TBE, HKS SSQV and am running the cobb stage 2 91 octane map. I have an aftermarket defi boost gauge that I installed about 2 weeks ago. Both the gauge and the AP read the same psi with a max of 9.2. The car feels fine when I drive it, but this is my first subie so who is to say if it feels fine for what im running.
What I know so far: The "restrictor pill" is in the hose coming from the turbo. The BOV is tight and no leaks. I reset the ECU and the boost didnt change meaning that the ECU isnt removing boost due to knock. The map that I am currently running is the only map that will work on my car for some reason. I will plug in the white plug and connect the green connects to change my base map. It will flash and then say im done. So then i unplug everything and start the car. When I go to press on the gas it goes quiet as if the gas shut off. If I were to hold the gas pedal down the car would die. I can feather the gas a little and it will climb up in rpm. The strange thing is that when I load the other maps the Tach doesnt move when I push on the gas. I never drove it with any of these other maps, but when I would reinstall the map im running now, everything goes back to normal and it functions perfectly. Perhaps one of you has some input? If not maybe we can meet up and one of you drive it to give me a second opinion or maybe you can hear a leak that I cant. This is my first rex and I cant really hear a difference from what one should sound like. Help please. i am decatting the uppipe in the next couple of days so I guess while im taking off the intercooler and such, that sould take care of any hose leaks. |
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#2 |
EJ22T
Join Date: Sep 2003
Location: Reno
Posts: 9,445
Car: '93/'01 GF6, mostly red
Class: 19 FP
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Divorce the AP and/or load a blank map so that you are only running on the stock ECU and see what happens. Also, where *exactly* are you getting your feed to the boost gauge?
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#3 |
(40 percent vodka)
Real Name: Joel Join Date: Oct 2006
Location: Reno, NV
Posts: 4,446
Car: 2004WRX
Class: Baby-Hauler/GroceryGetter
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I had it installed on the turbo side of the car right behind the t-fitting from the turbo, then someone on nasioc said to install it behind the BOV so I did.
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#4 |
(40 percent vodka)
Real Name: Joel Join Date: Oct 2006
Location: Reno, NV
Posts: 4,446
Car: 2004WRX
Class: Baby-Hauler/GroceryGetter
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how do I "divorce" the ap?
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#5 |
EJ22T
Join Date: Sep 2003
Location: Reno
Posts: 9,445
Car: '93/'01 GF6, mostly red
Class: 19 FP
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Boost reads lower after the intercooler than it does directly off the compresor outlet, but not 5 psi. It's actually not all that important where you have it, as long as there are no restrictions in the point you use, and you take into accoutn where it is when you are reading it. It should be consistent no matter where you put it.
"Divorcing" means removing the AP and putting the ECU back to stock, like the AP was never there. It's a PITA though, so actually it woud be a good idea to try some other things before you do that. I am starting to think maybe your boost solenoid is dead. You have catless TBE, BOV, and absolutely no other mods right?
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#6 | |
The Doink
Real Name: Scott Join Date: Nov 2002
Location: Portland, OR
Posts: 20,335
Car: '09 OBXT, '02 WRX, '96 Miata
Class: PDX/TT-6
The way out is through
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Is you is, or is you ain't, my con-stit-u-ints? |
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#7 | |
(40 percent vodka)
Real Name: Joel Join Date: Oct 2006
Location: Reno, NV
Posts: 4,446
Car: 2004WRX
Class: Baby-Hauler/GroceryGetter
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#8 |
JDM Cowboy
Real Name: Nick Join Date: Oct 2003
Location: Somewhere
Posts: 8,642
Car: 2015 Mazda 3
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How are you using the AP if it isn't already married to your car?
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While a standard engine is powered by a belt connected to the crankshaft, a turbo engine runs on its own exhaust steam, making it more energy efficient. -- CNN |
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#9 | |
warehouse SECCS
Join Date: Mar 2003
Location: SoCal...
Posts: 6,253
Car: 04 Evo 99 Cadillac
Class: street de le mod
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Anjali? Anjali? |
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#10 | |
EJ22T
Join Date: Sep 2003
Location: Reno
Posts: 9,445
Car: '93/'01 GF6, mostly red
Class: 19 FP
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Okay, not to come off harsh, but if you haven't heard those terms before, you haven't done any research about the AP yet. Go to http://www.cobbforums.com/forums/ and www.cobbtuning.com and read read read. Try calling Cobb first, then post on Cobb forums in the AP subforum, and if you still can't find the issue but have a good understanding of how the AP works (and the EJ20 in general) we will be better able to help you... and more willing, since we don't have to give you a page of background for every one line suggestion on how to troubleshoot issues with modded engines.
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#11 | ||
(40 percent vodka)
Real Name: Joel Join Date: Oct 2006
Location: Reno, NV
Posts: 4,446
Car: 2004WRX
Class: Baby-Hauler/GroceryGetter
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#12 |
Captain Turbo
Join Date: Feb 2004
Location: Reno
Posts: 3,318
Car: 05 STi
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The AP has the ability to read the boost value from the ECU in real time. I would try this first to see whether the boost is actually low or whether the boost gauge is just reading low.
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#13 |
EJ22T
Join Date: Sep 2003
Location: Reno
Posts: 9,445
Car: '93/'01 GF6, mostly red
Class: 19 FP
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What I was getting to was trying to eliminate or verify the AP/map as the source of the problem. If you have weird issues on a totally stock ECU, then it's mechanical. And if it runs fine, then either your AP is screwy, or you need to get a 100% Cobb originated map and try again.
Also, give a stock bypass valve a try. The RFL may not be leaking under no load, but if the springs are set incorrectly it will leak boost at a specific pressure... like 9.2 psi. The car will also run better in general. Given a choice between the intake and the BOV, I'd recommend the intake instead, because Cobb has maps for it.
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#14 | |
EJ22T
Join Date: Sep 2003
Location: Reno
Posts: 9,445
Car: '93/'01 GF6, mostly red
Class: 19 FP
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FWD is the new AWD |
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#15 |
Captain Turbo
Join Date: Feb 2004
Location: Reno
Posts: 3,318
Car: 05 STi
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Reading is for chumps!!
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#16 | |||||
(40 percent vodka)
Real Name: Joel Join Date: Oct 2006
Location: Reno, NV
Posts: 4,446
Car: 2004WRX
Class: Baby-Hauler/GroceryGetter
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You guys are not very good at reading and THEN answering.
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#17 |
Candy Mountain
Real Name: Cody Join Date: May 2005
Location: Californication
Posts: 7,751
Car: 03 Pussy Wagon, now with more pink!
Class: TESP
OMG Internet!
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What map are you running anyway?
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#18 |
(40 percent vodka)
Real Name: Joel Join Date: Oct 2006
Location: Reno, NV
Posts: 4,446
Car: 2004WRX
Class: Baby-Hauler/GroceryGetter
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oh cody not you too...
it says what map im running in my original post.../\/\/\/\ |
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#19 |
Candy Mountain
Real Name: Cody Join Date: May 2005
Location: Californication
Posts: 7,751
Car: 03 Pussy Wagon, now with more pink!
Class: TESP
OMG Internet!
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#20 | |
EJ22T
Join Date: Sep 2003
Location: Reno
Posts: 9,445
Car: '93/'01 GF6, mostly red
Class: 19 FP
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FWD is the new AWD |
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#21 |
(40 percent vodka)
Real Name: Joel Join Date: Oct 2006
Location: Reno, NV
Posts: 4,446
Car: 2004WRX
Class: Baby-Hauler/GroceryGetter
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Ok I took off the HKS SSQV and put the Bypass valve back on and there is no change in boost. I am in the process of removing the AP right now. Are there any other tips?
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#22 |
Assault Mechanic
Join Date: Apr 2004
Location: Reno
Posts: 996
Car: 13 Sti Hatch Satin white
Class: TBSP/TT-2
Aim for the EYES!
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Have you done anything with the restrictor pill?And have checked for a exhuast leak?
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#23 |
(40 percent vodka)
Real Name: Joel Join Date: Oct 2006
Location: Reno, NV
Posts: 4,446
Car: 2004WRX
Class: Baby-Hauler/GroceryGetter
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Hey qksubi. I have checked and the restrictor pill is in the hose. I have not done anything with it. If there was an exhaust leak, such as from the turbo to the DP, would that effect the boost? I think i have seen you drive by a few times. You live over by my friend Dustin who had the evo. Maybe sometime I can swing by and let you check it out.
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#24 |
EJ205
Join Date: May 2004
Location: Truckee
Posts: 1,948
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Wait what car is this? I didn't see that in the first post?
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Does it have a motor..............Does it have a motor? |
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#25 |
(40 percent vodka)
Real Name: Joel Join Date: Oct 2006
Location: Reno, NV
Posts: 4,446
Car: 2004WRX
Class: Baby-Hauler/GroceryGetter
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04 rex
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