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Discussion Starter #1
All in 36 hours!

I saw a black STI on the 580 (NorCal) today, you here?

Car is awesome. I can confirm that the scoop/wing shakes. This is because the hood is light and the lift created by the scoop shakes it a *little*. The wing, on the other hand, flexes a lot at highway speeds. This is because the material is not firm enough, and if it was made of aluminum instead of plastic, it would probably not flex.

Brake dust! Jesus, there is a LOT of it. 800 mostly highway miles (so brake usage was very limited) and when I washed the car, there was a lot of brake dust.

Anyone else notice the tranny whine? Listen for it in 5th and 6th above 2000 rpm. The pitch and loudness will increase with increased engine speed. Is this normal?
 

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I noticed the wine, but I assumed it was the turbo. Could I be wrong? If you depress the clutch in 5th or 6th and rev the engine a little the wine still increases in pitch.
 

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Finally got it - Mississauga, Ontario, Canada

I was on a noisy road, so I didn't hear it when the clutch was disengaged. It doesn't sound like a turbo to me, because the pitch is too low (turbo whine usually sounds like a dentist drill--very high pitch). What I am hearing is more like a high speed drill? (sorry, cant think of anything to compare it to). Also if you blip the throttle while in neutral, the turbo wastegate should be open and the turbo shouldn't spool.

FlyingDutchman said:
I noticed the wine, but I assumed it was the turbo. Could I be wrong? If you depress the clutch in 5th or 6th and rev the engine a little the wine still increases in pitch.
 

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Headlights

wastegate open in neutral? I wouldn't think so. The engine/turbo shouldn't care at all what gear you are in when operating. The wastegate should only open when the pressure to push it open is reached.

I think the transmission is the source of your whine guys. Even if the engine isn't driving the tranny (clutch pushed in), the gearing in the tranny is still spinning at the speed of the wheels. If it increases/decreases in pitch with actual speed and gear...that's your culprit.
 

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any pics of black/silver or black/gold in this forum? haven't seen any.. must not have been lookin hard enough... can anyone direct me to one?
 

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Discussion Starter #7
stock seats Modify? Cheap!

Right, you can't spool a turbo in neutral. Neutral == no load == no spool.


CloNeGTS said:
wastegate open in neutral? I wouldn't think so. The engine/turbo shouldn't care at all what gear you are in when operating. The wastegate should only open when the pressure to push it open is reached.

I think the transmission is the source of your whine guys. Even if the engine isn't driving the tranny (clutch pushed in), the gearing in the tranny is still spinning at the speed of the wheels. If it increases/decreases in pitch with actual speed and gear...that's your culprit.
 

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hatchy said:
Right, you can't spool a turbo in neutral. Neutral == no load == no spool.
huh? can't be true, right?? the turbine is driven by exhaust gases. which are produced whether you're in gear or not or even if a tranny is not attached (i.e. how they measure brake horse power).
 

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The noises I hear are the high pitch jet-like noise which I beleive is from the turbo, and the deep growl just after the throttle is closed which I assume is the waste gate. These two sounds are related to throttle position and motion. The only other noise I hear is the road noise.

I do feel like I'm driving a jet, or the bat mobile :D
 

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The Roll Call

Try it. Put your cut in neutral and rev your car to redline. Look at your boost guage. It'll spike up just a little and make maybe 1 psi for 1/2 second, then you are in vacuum the rest of the time.

4MLA1FN said:
hatchy said:
Right, you can't spool a turbo in neutral. Neutral == no load == no spool.
huh? can't be true, right?? the turbine is driven by exhaust gases. which are produced whether you're in gear or not or even if a tranny is not attached (i.e. how they measure brake horse power).
 

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i'd do it...if i had a boost gauge... :) okay, i'll take your word for it. i just don't understand why it works that way. (we didn't cover turbos in my highschool auto mech class 20 years ago. :( )
 

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you can spool up a turbo in neutral...rev it up and if you have an aftermarket BOV you will hear it hiss...what a sound. scares other drivers at stoplights! :D
 
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CloNeGTS said:
I think the transmission is the source of your whine guys. Even if the engine isn't driving the tranny (clutch pushed in), the gearing in the tranny is still spinning at the speed of the wheels. If it increases/decreases in pitch with actual speed and gear...that's your culprit.
I plan to replace all of the lubricants with synthetics. This will usually smooth out a good deal of noise. These new synthetics are such good lubricants that they should be used only after a proper break in.

Note: Unless measures are taken by the MFG'er to permit this, e.g. the EVO comes with synthetic engine oil, I don't know about the tranny.
 
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