stock boost levels
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Registered User
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Joined: Apr 2003
Posts: 369
From: Litchfield, NH
Car Info: 03 yellow WRX stage 1
stock boost levels
I was just curious if my turbo was runnin correctly and all. i cant tell really how much boost i should see in first gear cuz it just blasts through til redline. second is showing like 11 or 12psi while third and the rest show about 13+/-. i heard sumone saying that i should see 14 or more. i think he's wrong but i figured i ask sumpeople who knew. when should i see the turbo start to spool is the different gears? thanx all. and i hope this helps sumone out sumday
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when your car is stock, the factory boost controller limits boost in at least first gear, and i think second as well. i'm not sure why subaru would do that, but its just the way it is. to get around it, you can get a boost controller and set it to your stock 13.5 psi (?) and you'll get full boost in first and second. it's a beautiful feeling, but redline comes up REAL fast in first after you hit that kind of boost. eventually you can raise the boost levels a bit after you get at least a catless up pipe. i've got no cats and only have mine up to 15.5psi with 93 octane to keep it relatively safe.
your brother in boost,
spanky
your brother in boost,
spanky
Thread Starter
Registered User
iTrader: (-1)
Joined: Apr 2003
Posts: 369
From: Litchfield, NH
Car Info: 03 yellow WRX stage 1
yes i know that it limits the boost levels. Thats why i'm askin what it limits them to? does anyone know? What rpm does the boost start to tapper down. thanx all just makin sure my turbo and everything is working to par. I dont know if i would set my boost levels that high is the first few gears, it just must cut down on reliability all the way around.
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Joined: Sep 2003
Posts: 132
From: New Castle, PA
Car Info: 02 WRX
I didnt know what mine ran either til I got my boost gauge installed. Mine reads in bar. In 1st, when getting on it hard I reach about .25 bar and the same in second. 3rd through 5th gear I hit 1 bar and my car is stock. 1 bar is 14.6 PSI to my knowledge. I dont know if my car is one of those freaky Rexes but I am happy with it so far. I would like to add a boost controller sometime in the near future. Any suggestions? Thanks
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help me out-I just got a new clutch put in by dealership so I think they would make sure the boost is right. I have stock boost gauge. So we should be getting around 13 psi stock? And on the gauge, that is equivalent to a little less than 1 bar? I have a blitz cat back exaust, K&N drop in filter and STi scoop w/ simple splitter. Cobb is putting chip in and reflashing it monday. What can I do to up the boost? Manual Boost control? 3/16 coupling? What would anyone suggest upping boost to w/ these mods? Thanks to any advice.
Thread Starter
Registered User
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Joined: Apr 2003
Posts: 369
From: Litchfield, NH
Car Info: 03 yellow WRX stage 1
ok well i'm gonna go out and try to get those levels. i know last night my third gear spiked to 14 but then slowed down to about 12.5. i'll go check and see what the rpms are lookin like. i'll post when i return
Thread Starter
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From: Litchfield, NH
Car Info: 03 yellow WRX stage 1
k i'm back. verdicts in. 1st gear 12psi between 3500-4000rpm. 2ndgear = 12psi at around 3500-4000 3rd gear peaks 14psi then stays at 13 at around 3500rpm. didnt go much farther than about 5000rpm so i dont know the drop offs. thrid deffinatly seems liked the boost turned on quicker alot closer to 3500rpm than first and second. hows this sound to everyone?i dont have the 3/16mod
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Originally posted by Slamsitin
k i'm back. verdicts in. 1st gear 12psi between 3500-4000rpm. 2ndgear = 12psi at around 3500-4000 3rd gear peaks 14psi then stays at 13 at around 3500rpm. didnt go much farther than about 5000rpm so i dont know the drop offs. thrid deffinatly seems liked the boost turned on quicker alot closer to 3500rpm than first and second. hows this sound to everyone?i dont have the 3/16mod
k i'm back. verdicts in. 1st gear 12psi between 3500-4000rpm. 2ndgear = 12psi at around 3500-4000 3rd gear peaks 14psi then stays at 13 at around 3500rpm. didnt go much farther than about 5000rpm so i dont know the drop offs. thrid deffinatly seems liked the boost turned on quicker alot closer to 3500rpm than first and second. hows this sound to everyone?i dont have the 3/16mod
INteresting thread. I wondered about this since I got my boost gauge and waiting on my TXS DSBC. I suppose after installing the BC, boost will be consistent in every gear?
Thread Starter
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Posts: 369
From: Litchfield, NH
Car Info: 03 yellow WRX stage 1
It was humid out yesterday so is that why my cars boost took alil longer to peak? what does Mattr have for his car. i'm stock except for exhaust and intake. r u guys sayin i'm runnin alil sluggish??
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what does Mattr have for his car.
Boost gauge = $17.99 from JC Whitney