From my understanding the WRX stock should run 1bar 14psi my car runs .8/.9 whats up ?? any info would be helpfull

Thanks Justin

 

...should be around 14.7

~B

 

i understand that it would very some but still my car is only running 10 maybe 12 tops. any ideas why this could be is it possible that the ecu learned the previous owners driving style the guy probably never took the car over 4000rpm. any ideas would be helpfull

 

I've heard it varies with altitude...
I have read more than a couple posts at 0.092mpa, that is also what I get too...

 

If the car is used and the ECU has learned a sissy-boy driving style, try resetting the ECU. Do this by diconnecting the battery and pushing the brake to be sure all the electrons are spent. Then reconnect the battery and drive as usual. The car may not feel different at first, but it will learn your driving style and should give you more boost. Exhaust and intake would also increase boost without touching the turbo or controller. Anything that increases the engines ability to breath will increase your power and boost.

 

thanks everyone the info really helped im going to go try to reset my ECU see if that works and yes i was watching the boost in 4th not 1st and 2nd i will let you know what happens

 

I am guessing that you live in Beaverton Colorand. If so, your percieved problem is with your boost gauge. This reads boost increase over relative pressure. In your case you are probably quite a bit over sealevel which will make your boost gauge read low, even though you are running more boost. The higher you go, the lower it will read. Also, as the air is thinner where you live your turbo will make less boost at any given wastegate setting. A MBC would allow you to increase this, but be careful to not overboost. I would look around for a theoretical atmospheric pressure in relationship to altitude chart and add the value of what altitude you are at to the readings you are getting from your gauge. This will give you a closer idea of what boost you are running.

 

Another option is the TurboXS UTEC. It's closed loop boost control will handle atmospheric pressure changes. You will also be able to tell what actual boost you are running through its logs as they are based on Manifold Absolute Pressure. You can also set your PSI values in 250 RPM increments for each 10% throttle increments. You will get somewhere in the neighborhood of 30HP from this mod alone. Of course it is 999, but it will grow with your project to whereever you want to take it.

 

Awsome information there. It has been driving me crazy seeing .07-.08 boost when running stock. I was not sure if it is the crappy 91 octain premium they have at this altitude, or if it was because the air was thinner. It would make sense that the altidude atmosphere density would make a difference. Greatly appreciated there Cobra!!

 

i actually live in beaverton Oregon and im only like 100ft obove sea level and yes in the near future i will be getting a electronic boost controller

 

I don't know if you guys know this, so here we go. Every body knows how the stock wrx fbc's pluming is set up i.e nipple off of the turbo into the t connecter to the fbc and on the other side of the t connecter to the wastegate acc.

wastegate acc-----------------------------------turbo nipple
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|
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factory boost control sileniod

If you got the car used it is possible that the previous owner had a mbc on the car. When he took off the mbc and put back on the fbc line he got them reversed.If you put the line that is suposed to go on the turbo nipple on the wastegate acc you will only see 12psi max. In the line there is a restricter. I reversed the line my self a couple of times by mistake. Reverse the lines and see what happens.