[3.0L]

Sometimes I think I can hear it, but not consistently.

But then, my ears aren't that great, either.

[jmwilson125]

Originally Posted by 3.0L

Sometimes I think I can hear it, but not consistently.

But then, my ears aren't that great, either.

I couldn't, but then I got an intake and it is veeeery nocitable and enjoyable.

I then had to swap back to stock for a period of time. I could here the turbo then only because I knew exactly what and when to listen for. it is pretty faint though.

[Tyresian]

It really would depend on how you're driving. The turbo doesn't really start to spool until above 2k - 2.5k RPM. So if you're driving an automatic with comfort mode unless you smash the peddle down you may almost never hit boost (unless going uphill).

If you're in sport mode and you're driving spiritedly you will start to get boost. I doubt you'll "hear" the turbo in this car as it is so well sealed and the turbo is concealed very well. Most people throw on an open intake or a drop in filter to better hear the turbo, also a tune that forces higher pressure should increase that sound as well.

If you're driving in sport and spiritedly I don't know if you'll hear the turbo but you should at least hear the diverter valve releasing air.

[3.0L]

Originally Posted by jmwilson125

I couldn't, but then I got an intake and it is veeeery nocitable and enjoyable.

What do you mean by "intake?" New intake manifold? New air cleaner?

[pz619]

I hear mine, but I don't like intake noise. Rather hear the exhaust. It's probably the only reason why I never got a new intake.

[crbalch]

Originally Posted by 3.0L

What do you mean by "intake?" New intake manifold? New air cleaner?

They mean just that...an intake. Cold air, replaces the stock air box.

[3.0L]

Originally Posted by crbalch

They mean just that...an intake. Cold air, replaces the stock air box.

Ah yes, the air box. I know what that means.

"Intake" by itself seemed so generalized.

Thanks.

[jb606]

Originally Posted by 3.0L

Sometimes I think I can hear it, but not consistently.

But then, my ears aren't that great, either.

The stock intake is very quiet. About the only time I can hear the turbo start to spool up or the bypass valve go off is if I have something (jersey barrier) beside the car or in a tunnel.

[rwalker]

Originally Posted by 3.0L

Sometimes I think I can hear it, but not consistently.

But then, my ears aren't that great, either.

I can hear mine, but only because I have the MPPK airbox (big red hole cut in it).

[amw896]

when I'm at Wot only.

[redontheline]

I can hear the 'BOV' clearly when letting off semi-agressive throttle. I guess it's these boyish ears of mine.

[nike001]

Get an intake & tune, you'll hear the turbo then.

Originally Posted by redontheline

I can hear the 'BOV' clearly when letting off semi-agressive throttle. I guess it's these boyish ears of mine.

Our cars don't have a BOV. We have a diverter valve.

[redontheline]

Originally Posted by nike001

Our cars don't have a BOV. We have a diverter valve.

I'm no expert, so I said 'BOV' not BOV. What's the difference? Just where the air ends up?

[pz619]

Originally Posted by redontheline

I'm no expert, so I said 'BOV' not BOV. What's the difference? Just where the air ends up?

Exactly. Blow off valve (BOV) generally vents to the atmosphere. Diverter Valve (DV) vents the air back into the intake.

[3.0L]

Originally Posted by pz619

Exactly. Blow off valve (BOV) generally vents to the atmosphere. Diverter Valve (DV) vents the air back into the intake.

They are called waste gates on turbo-charged aircraft. I once flew in a Beechcraft Bonanza that had a retrofitted turbo-charger with a manual (pilot controlled) waste gate. The waste gate was controlled by what looked like a second throttle. The routine was, push in the main throttle, then start feeding in the waste gate control. One had to carefully monitor the manifold pressure gauge so as not to over boost the engine. It sure did get up and go when the boost arrived!

[Kolyan2k]

I can hear with spirited driving. I am stock

[DanielGr]

Originally Posted by 3.0L

They are called waste gates on turbo-charged aircraft. I once flew in a Beechcraft Bonanza that had a retrofitted turbo-charger with a manual (pilot controlled) waste gate. The waste gate was controlled by what looked like a second throttle. The routine was, push in the main throttle, then start feeding in the waste gate control. One had to carefully monitor the manifold pressure gauge so as not to over boost the engine. It sure did get up and go when the boost arrived!

Wastegates are different to BOV or DV. Wastegates are, like you said, for controlling boost which all turbos will have (either integrated, external, venting straight out or into the rest of the exhaust etc)

BOV/DV are there to release pressure in the inlet tract when you snap the throttle closed and the pressure has to go somewhere. Or if you run nothing - the boost pressure goes back through the turbo and creates the famous 'flutter' noise (plenty of debate on whether or not it's good for the turbo itself)

DV in theory are better for response as the boost isn't wasted to atmosphere like in a BOV. In Australia anyway, atmospheric BOVs are illegal too.

[BMWTurbo]

Just bought a Mppk airbox and I have the Afe filter. Going to install tomorrow. Let you know if hear a difference.

[XutvJet]

Originally Posted by Ryanm235i

Just bought a Mppk airbox and I have the Afe filter. Going to install tomorrow. Let you know if hear a difference.

Where did you get the MPPK airbox from and how much?

[XutvJet]

I can hear the turbo more so under the following conditions:

1) Colder weather (i.e., sub 60 degree temps). Pretty typical for most any turbo car.

2) When using 50%+ throttle near walls, big rigs, and basically anything to bounce the noise back from the right side of the car (i.e., turbo side).

3) There's more turbo noise after adding the M-Performance exhaust.


I run the Torque App and it's a great way to monitor critical data like boost, oil temp, intake air temp, and coolant temp. Depending on gear, rpm, throttle how heat soaked the car is, and ambient conditions, I typically see 9 to 11.5 psi at full throttle from a lower rpm pull.

[Tyresian]

Originally Posted by XutvJet

I can hear the turbo more so under the following conditions:

1) Colder weather (i.e., sub 60 degree temps). Pretty typical for most any turbo car.

2) When using 50%+ throttle near walls, big rigs, and basically anything to bounce the noise back from the right side of the car (i.e., turbo side).

3) There's more turbo noise after adding the M-Performance exhaust.


I run the Torque App and it's a great way to monitor critical data like boost, oil temp, intake air temp, and coolant temp. Depending on gear, rpm, throttle how heat soaked the car is, and ambient conditions, I typically see 9 to 11.5 psi at full throttle from a lower rpm pull.

I know a lot of people recommend Torque which is what led me to buy a Scantool OBDLink LX, but I ended up going with the OBD Fusion app instead. It allows me to select which data I want to monitor and then I can save that data in CSV format to Google Drive which opens as a spreadsheet. It is nice since I'm a fan of raw data and being able to correlate and compare that data. I'm not sure if Torque offers this, it seemed to be more real time / visual. (OBD Fusion also has gauges, I just don't need to really know WHILE I'm driving, they do have charting with real time updates which I've used as I can look at it shortly after I've done something to see the impact)

Does Torque also let you export data to a spreadsheet?

[Grentz]

I can hear the diverter very clearly with spirited driving (getting into higher RPMs)