Thats about what peak should be. my buddy has a '21 WRX, and in perfect conditions it'll peak at about 20 and keep consistent at about 17.

 

I have a bone stock 2023 6MT Premium. I've never seen more than 11-12 PSI. I'm not sure if this is "normal" or not. I'm only at 1400 miles, so not fully settled in. It would be interesting to hear what other owners of unmodified cars are seeing as max.

 

The VB, in stock form, that's all you'll see especially in cold weather. The car hits its torque targets and says "good enough".

Cobb OTS hits 16lbs and protunes are hitting 20+ on the same hardware though

 

The car is fine.

Enjoy!

 

I have a stock 2023 WRX that I bought in December. I am just about 1,100 miles. I have been real careful with my car during break in. I have a Peak Boost of around 11. I have reset it a couple times. I will start exploring with acceleration and boost as the car is now coming out of the break in period.

So I have never had a Turbo car. I love how you can really feel the turbo kick in once it spools up. That said - I need to learn about Turbo engines..........

The Redline looks like it will come up FAST in the lower gears especially. So where would you get the biggest boost numbers? A quick acceleration? Or putting down the throttle on the highway in one of the higher gears?

Is the boost based on time you are accelerating, or the RPMs you reach? Educate me!

Thanks! FLAGG

 

I think the amount of boost is determined by the ECU, mostly depending on the demand/load "requested" by the speed, and amount of throttle input. There is less load in the lower gears due to the mechanical advantage of the gearing. At higher gears & higher speeds, there is more demand. This is just a "seat of the pants" observation from owning several turboed vehicles, mostly turbo diesel trucks. Someone correct me if my thinking is far astray....

Or putting down the throttle on the highway in one of the higher gears?

 

Peak load occurs in higher gears at full throttle.

 

Thanks! That makes some sense.........FLAGG

 

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Regarding the boost pressure (psi), it's important to note that the stock boost levels in a WRX can vary depending on the model and year. However, the range you mentioned, between 19-20 psi, is within the normal operating range for many WRX models.

 

Regarding the boost pressure (psi), it's important to note that the stock boost levels in a WRX can vary depending on the model and year.

^This. Let's not confuse the OP. 2015-21 wrx has 17-18psi continuous boost pressure and when you roll into it you will regularly see spikes up to 22-23psi and that's normal.

2022 onwards, the engine was changed from 2L to 2.4L and the boost pressure was dropped to 10-12psi.

 

That is all great to know. For now I plan to keep it stock, so now I know what to expect. And why it is happening. Thank you everyone. FLAGG

 

2019 WRX Sti bone stock 17 psi on dash gauge

 

I have a 2024 with a 1100 miles and only see 9.5 or so hit 11psi once not getting the 12psi

 

Sounds normal. In cold weather it may go lower, hot weather higher, depends on the elevation, air temp and density.

Around 12 is normal for my 2023 with 6K miles, temps depending. The "peak" is just that... a momentary spike, not sustained boost. No worries.