[philipwrx]

Hello everyone im just a newbie on this beast 2015 wrx and still figuring out why is that i always get overboost everytime i drive my car aggressively. I only hit the gas maybe like 50 to 60% and yet i always got more than 20psi.but if i hit the gas slowly the turbo goes smooth no over boost.but when i hit the gas fast i got overboost.i know overboosti g js not good on the engine can you help me guys pls how to control this overboosting. Am i only the one who is exp. this scinario or its just a wrx thing? I need ur help subie fam thank you in advance..

Sent from my SM-G950W using Tapatalk

 

[XJman]

Tell us more about the car, parts, tune, conditions besides hitting the throttle. What gear?

Sent from my SAMSUNG-SM-G935A using Tapatalk

 

[philipwrx]

Car is stock sir. Gear 3rd and 4th sir.

Sent from my SM-G950W using Tapatalk

 

[BananaSammiches]

Does the boost spike momentarily or does it hold steady? What PSI are you hitting when you get over boost?

Sent from my 2PS64 using Tapatalk

 

[philipwrx]

Does the boost spike momentarily or does it hold steady? What PSI are you hitting when you get over boost?

Sent from my 2PS64 using Tapatalk

20 to 22.7psi sir. Nope it doesnt hold steady sir.

Sent from my SM-G950W using Tapatalk

 

[anarekist]

i think what it is that a momentary overboost is ok, car quickly compensates but the reading on the boost gauge still indicates you hit a boost peak of 20+ even if you were there for half a second.

 

[BananaSammiches]

i think what it is that a momentary overboost is ok, car quickly compensates but the reading on the boost gauge still indicates you hit a boost peak of 20+ even if you were there for half a second.

You beat me to it. Boost spikes happen sometimes. As long as they're not sustained and don't happen often, I'd say you're okay. I hit almost 19 PSI when I still had my TD04, but it was an isolated incident. If you start seeing that your car is over-boosting and holding steady at that PSI frequently, then it's time to start digging to see what the issue is.

Sent from my 2PS64 using Tapatalk

 

[philipwrx]

i think what it is that a momentary overboost is ok, car quickly compensates but the reading on the boost gauge still indicates you hit a boost peak of 20+ even if you were there for half a second.

Oh see well that make sence to me now. But sometimes sir i feel clugging on my engine everytime i hit overboost it happen twice already.

Sent from my SM-G950W using Tapatalk

 

[BananaSammiches]

How are you driving it when this happens? Are you stomping on the throttle at low RPMs?

Sent from my 2PS64 using Tapatalk

 

[philipwrx]

How are you driving it when this happens? Are you stomping on the throttle at low RPMs?

Sent from my 2PS64 using Tapatalk

Nope sir 3.5krpm when im hitting it sir

Sent from my SM-G950W using Tapatalk

 

[BananaSammiches]

Just keep an eye on it. If it starts to become a chronic issue then you can start worrying. Most commonly, over-boosting it's caused by a wastegate issue, but seeing as your car is only a couple of years old, I highly doubt that there's anything seriously wrong with it, especially since it's still stock.

Sent from my 2PS64 using Tapatalk

 

[philipwrx]

Just keep an eye on it. If it starts to become a chronic issue then you can start worrying. Most commonly, over-boosting it's caused by a wastegate issue, but seeing as your car is only a couple of years old, I highly doubt that there's anything seriously wrong with it, especially since it's still stock.

Sent from my 2PS64 using Tapatalk

Waste gate? How can i check it sir or clean it?

Sent from my SM-G950W using Tapatalk

 

[BananaSammiches]

The wastegate is built into your turbo. There are also external wastegate, but for your purposes we'll just talk about the internal one. It is a valve that opens and closes to divert exhaust gasses from the exhaust turbine in order to control your boost pressure. There is an actuator which has a spring that is used to control the opening and closing of the valve by way of your boost control solenoid. If your boost is consistently not being properly controlled, it could be a problem with the vacuum lines running from the boost control solenoid to the turbo, or a problem with the wastegate itself.

Sent from my 2PS64 using Tapatalk

 

[philipwrx]

The wastegate is built into your turbo. There are also external wastegate, but for your purposes we'll just talk about the internal one. It is a valve that opens and closes to divert exhaust gasses from the exhaust turbine in order to control your boost pressure. There is an actuator which has a spring that is used to control the opening and closing of the valve by way of your boost control solenoid. If your boost is consistently not being properly controlled, it could be a problem with the vacuum lines running from the boost control solenoid to the turbo, or a problem with the wastegate itself.

Sent from my 2PS64 using Tapatalk

Ok sir copy that il check those things right away thank you so much sir

Sent from my SM-G950W using Tapatalk

 

[BananaSammiches]

No problem. Good luck!

Sent from my 2PS64 using Tapatalk