3.3TT Whistle N Psshh

[Onno P]

What is the purpose of the BPV?

My understanding is it recirculates wasted air freshener the turbos back to the intake.

Will try to explain:
When under boost and releasing your foot from the accelerator the turbo’s are still at high RPM and you ( suddenly ) close the entry to the inlet manifold. Pressure has to go somewhere and is bled off through these valves to avoid pressure peaks in the inlet pipes between the turbo and butterfly valve.
Second advantage is that the turbo’s CAN release the pressure making it easier to maintain high RPM and being ready to spool up again when you put your foot down.

-BPV’s redirect their wasted air back into the inlet
-BOV into the atmosphere. These make the most PSSSSSSSH
-Combo-valves are available where it is a BPV when releasing the throttle partly and turns into a BOV when fully lifting your foot.

 

[mhal8876]

HKS SQV4 BOV + Flange Adaptor kia stinger

725 US$

COPY/PASTE:

The HKS Super Sequential Blowoff Valve (SSQV) is a dual stage pull type relief valve. Unlike other blow off valves that are push type, the SSQV will not leak under high boost conditions nor under vacuum at idle. Being of a pull type valve structure, the SSQV can not physically leak under any level of boost because boost pressure also keeps the valve closed against its seat. The SSQV is actuated by pressure alterations only, not by the rate of pressure or vacuum in the line, which ensures a quick valve response and complete closure during idle. Vehicle specific HKS SSQV kits come complete with all needed mounting flanges, brackets, and miscellaneous hardware for a bolt-on installation.

is this gonna void warranty? Nobody answer my question yet, is this gonna harm or cause problem to the engine? wanna do like Kamauxx did.

 

[NYLAWBIZ]

Will try to explain:
When under boost and releasing your foot from the accelerator the turbo’s are still at high RPM and you ( suddenly ) close the entry to the inlet manifold. Pressure has to go somewhere and is bled off through these valves to avoid pressure peaks in the inlet pipes between the turbo and butterfly valve.
Second advantage is that the turbo’s CAN release the pressure making it easier to maintain high RPM and being ready to spool up again when you put your foot down.
Thanks for the explanation. Why wouldn't KIA set it from the factory so it is tuned optimally?
-BPV’s redirect their wasted air back into the inlet
-BOV into the atmosphere. These make the most PSSSSSSSH
-Combo-valves are available where it is a BPV when releasing the throttle partly and turns into a BOV when fully lifting your foot.

 

[DiabloStinger]

So you mean this will cause problem to our engine?

It is a moderate risk type of mod. In the perfect scenario it could do damage. Best to replace the BPVs and let it circulate as intended unless you are tuning specifically for this variable.

 

[DiabloStinger]

is this gonna void warranty? Nobody answer my question yet, is this gonna harm or cause problem to the engine? wanna do like Kamauxx did.

Those HKS BPVs are what I ran on my Mazdas. Solid yet pricey. If they are installed to recirculate (not vent to atmosphere) you won't run the risk of damage.

 

[AnyVare]

Might be fun to see a poll of the Psshh noise.....

 

[Volvowith18psi]

Ouch 720 bucks is abit pricey..... Always wanted the noise, but not 700 worth. Id pay 400 though.

 

[robz32]

is this gonna void warranty? Nobody answer my question yet, is this gonna harm or cause problem to the engine? wanna do like Kamauxx did.

I have already answer this on a previous post here. No it will not void your warranty as long as you put the hoses back where they were, when you take it in for work at the dealer.
3.3TT - Whistle N Psshh

 

[Original Poster]

What is the purpose of the BPV?

A BPV recycles the air back into the intake post MAF but pre-turbo. The reason for this is that air has already been measured by the MAF and the ECU is expecting to use it for its fueling calculation.

With the Stinger being MAP based not sure why they went BPV, maybe to reduce noise for the general consumer.

 

[Onno P]

BPV are mainly for the environment. The air that enters the turbo’s is not clean because the crankcase is vented back there through the PCV.

 

[NYLAWBIZ]

Thanks for all the explanations.

 

[TeeCee]

I have already answer this on a previous post here. No it will not void your warranty as long as you put the hoses back where they were, when you take it in for work at the dealer.
3.3TT - Whistle N Psshh

Which hoses need to be put back where they were when going in for dealer maintenance? Specifically which hoses?

 

[Thomby]

Which hoses need to be put back where they were when going in for dealer maintenance? Specifically which hoses?

The medium-size ones he has disconnected (1.5" maybe?), which go from the bypass/recirc valves back up to the turbos. The small lines are vacuum lines from the intake, which are what activate the twin valves. You can follow the bigger tubes he has disconnected to each side's turbo, where they should join in with the even bigger hoses which are the intake pipes from the airboxes/air filters.

So what he's doing is leaving the valves & vacuum lines that control them in place, and where the valves normally send high pressure air back through the turbo, he's just leaving them open to atmosphere. So all that turbocharged air escapes (and makes noise), but the disconnected recirc tubes are capped so no unfiltered air/debris gets sucked into the turbos.

 

[TeeCee]

The medium-size ones he has disconnected (1.5" maybe?), which go from the bypass/recirc valves back up to the turbos. The small lines are vacuum lines from the intake, which are what activate the twin valves. You can follow the bigger tubes he has disconnected to each side's turbo, where they should join in with the even bigger hoses which are the intake pipes from the airboxes/air filters.

So what he's doing is leaving the valves & vacuum lines that control them in place, and where the valves normally send high pressure air back through the turbo, he's just leaving them open to atmosphere. So all that turbocharged air escapes (and makes noise), but the disconnected recirc tubes are capped so no unfiltered air/debris gets sucked into the turbos.

Got it! Thank you bro.