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Old 04-20-2013, 12:48 PM   #1
jsubiesk
Scooby Newbie
 
Member#: 335038
Join Date: Oct 2012
Location: regina saskatchewan, canada eh
Vehicle:
1995 impreza
silver

Default boosting problems ver 2 ej20g

Just upgraded all the neccessary mods needed and got robs 550 tune. By the way this tune is incredible and there is a noticeable increase in smootheness and it pulls better through every gear. That being said I cannot reach 1.25 kg/cm squared. Which is just under 18psi. The hoses having to with the boost control solenoid dont look to be hooked up properly and on the side of my apexi intake I am unsure which hose is to be connected to the little nipple on the part after the maf. Any help is appreciated and ill put a picture or two up
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Old 04-20-2013, 12:50 PM   #2
jsubiesk
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Member#: 335038
Join Date: Oct 2012
Location: regina saskatchewan, canada eh
Vehicle:
1995 impreza
silver

Default

I forgot to mention what happens is a heavy sputter at times and a lot of hesitation. feels like a misfire or fuel cut. I just had all the coils out and I have ngk iridium plugs in. The coils all looked to be in good shape.
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Old 04-20-2013, 07:17 PM   #3
hail2theTheif
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Member#: 42548
Join Date: Aug 2003
Chapter/Region: BAIC
Location: Redwood City, CA
Vehicle:
2015 Base STi
Black (CBS)

Default

This is more a curiosity thing and not help but, have you done the coil pack upgrade to the 02+ WRX/STi coils?

I used to have a v2 swap with a Rob tune as well and the coil pack upgrade is a MUST for the ej20g platform.

Your current problem may be caused by a different issue but those older coil packs tend to fail when under higher stress which the new 550 tune would do. Even if there are no visible cracks they can still be bad.

As far as the hoses go....if you can post a photo I could reference my old engine bay and try to help you out with proper connections.
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Old 04-21-2013, 04:20 PM   #4
jsubiesk
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Member#: 335038
Join Date: Oct 2012
Location: regina saskatchewan, canada eh
Vehicle:
1995 impreza
silver

Default

I just confirmed all my lines are hooked up properly. I am going to do the coil convert just to be safe. I didn't know they could be faulty with no visible signs. thanks for the input
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Old 04-21-2013, 04:23 PM   #5
carl1975
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Member#: 354134
Join Date: Apr 2013
Default boosting problem please help

Hi i am currently having problems with my boost on my 1995 subaru wrx wagon it gets to where it normally begins to boost then it starts to misfire and sounds like its hitting rev limiter and it looses power,if i continue to try to get boost i also noticed it boils my water up but temp stays as normal, ive checked all the boost pipes and everything seems to be fine,
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Old 05-02-2013, 10:35 PM   #6
CRX7
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Member#: 31639
Join Date: Jan 2003
Chapter/Region: SWIC
Location: Santa Fe
Vehicle:
99 Impreza
White

Default

Engine cutting under boost at high rpms is the first symptom of bad coils, it gets worse as you let it go with hesitation at all rpms. My coils looked beautiful, but were bad. If you haven't upgraded your coils this is first thing you need to do before you start looking at anything else.
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