I own a mid-2014 MacBook Pro running macOS Mojave 10.14.3.Over the past few months, suspicious things have been happening that I can no longer brush off.
I'm starting to become worried about everything I do on my laptop, even logging into my account on this website..First things first (this has been happening for a few months now), many times when I open my laptop to the lockscreen, there would be a little binoculars icon on the top right of the screen, next to the time and battery.
It looks like this: (this is just a screenshot of it I found online, not my actual computer)This icon disappears when I reach the desktop screen.I know that this icon is supposed to indicate activity with Remote Access / screen sharing, but everything involving those things is disabled on the Sharing settings in system preferences.Gee, wouldn't this really make someone think their computer screen is being watched?
I eventually brushed this off as some kind of bug, but as of late, I'm thinking it might be related to this next thing I've discovered:what in the name of macintosh are these "Macrourus" and "Aguacateca" processes I keep seeing in my activity monitor?I thought they could just be system processes (considering they come from the "root" user), but google doesn't seem to know anything about them.I originally discovered them as I was working on a project in Premiere Pro, and noticed that my laptop was really struggling to keep up, more-so than usual.
I checked activity monitor, and caught them taking up more than 100% of the CPU.
(???)They always arrive together (never one by itself), and every time I see them, they're there for a few seconds then disappear.
Luckily, I managed to catch a screenshot of it and post it here.Don't a lot of mac viruses take hold of the "root" user?
I'm really not sure how a lot of it works, but I'm very skeptical and I'm not sure what to think anymore.Is this just a paranoia fest, or should I be seriously concerned?
I don't want to have to wipe my hard drive again, I'm so sick of doing that LOL.
But even if I decide to do a fresh install, and then restore from a backup, couldn't the virus still be kept in the backup?
This guide brought to you by BMW N54 Tuners will explain what the VANOS system is, the importance of the technology, and most importantly when and why it should be replaced or rebuilt.
The VANOS system isn't unique to the N54 engine; it is used in many variations of BMW engines.
However, for tuning purposes it is important to at least be able to identify VANOS problems, and know how to fix them as a faulty solenoid can cause a major loss of horsepower.
The BMW VANOS (variable nockenwellen steuerung in German) is a variable valve timing technology developed by BMW.
The system variably adjusts the timing of the valves by changing the position of the camshaft relative to the drive gear.
In simpler terms, it adjusts the camshaft for the intake and exhaust valves, allowing for smoother idling, more torque, and a more elastic powerband.
In addition to this, the vanos solenoids control the flow of oil to the cam gears, which is what allows the timing to adjust.
Dirty, clogged, or improperly functioning vanos solenoids will have a significant impact on horsepower, performance, and overall drive-ability.
The first inclusion of Vanos was in the 1992 BMW M50 engine that was used in the 5-Series and only adjusted the position of the intake camshaft.
Double Vanos was introduced four years later in 1996 in the S50 engine and featured continuous variability of the intake and exhaust valves, rather than only the intake valve like the single vanos had done.
Here are two diagrams that show how VANOS works, if anyone wants to confuse themselves even more:.
Well, you really don’t.
Understanding the Vanos system and the technical and mechanical ideology behind it is a headache and filled with jargon that only advanced mechanics and ECU tuners need to understand.
What’s important to us as BMW owners is knowing that the Vanos system is a major electronic component of our engine’s computer system and that a bad or damaged Vanos can cause a decrease in power and torque, rough idling conditions, and poor fuel economy.
Loss of power and torque, primarily in the lower ranges, typically below 3k RPMS.
Engine hesitation and bogging in the lower rpm ranges.
Rough idle with frequent hiccups.
Increased fuel consumption or poor fuel economy.
Cold start issues and stalling in cold weather.
Engine fault codes, aka a check engine light.
Engine constantly falls into limp mode after acceleration.
P1520: Camshaft position actuator, exhaust.
P1523: Camshaft position actuator is jammed, exhaust.
P1397: Camshaft position sensor B. N55 and N63 owners need to use this Vanos solenoid: N55/N63 Vanos Solenoids.
Our readers get 5% off vanos solenoids by clicking the link above and using the code "N54TUNERS" at checkout!
These are only a few fault codes for the Vanos system, other codes could also indicate a failing Vanos system.
If you have a check engine light, we highly recommend buying a code reader and finding out what it is yourself before you pay a shop $100 to plug their scanner into it.
Although there are various symptoms caused by a failing Vanos system, sometimes they are not noticeable at all until the system has just about completely gone bad.
Certain engines are good at hiding any symptoms and you may not realize your Vanos has gone bad.
Here are a few key mileage points we note:.
50,000 Miles: at 50k miles, your Vanos seals are probably just about all worn down.
If you do not notice any issues at this point you can go a bit longer without repair, but your car might be performing below par without you knowing.
70,000 Miles: by 70k miles you should repair/replace your VANOS if you have not already.
At this point, your seals will be worn out and your car will have less power in the lower ranges, whether or not you notice it.
When you replace your Vanos you will notice an increase in lower range power, up to about 3k RPM’s, you will improve your fuel efficiency by a decent amount, and it may solve any rough idling that your car has (this can also be caused by spark plugs or the spark plug gapping).
A lot of the time you won’t notice that your car is underperforming, especially if you haven’t experienced it at full performance, and therefore will be hesitant to repair a part that isn’t technically broken yet.
But we recommend replacing the seals and the whole system around 70k miles if not earlier.
We consider it preventative maintenance and you will notice a difference in the performance and smoothness of your ride.
IImportant Note: if you are going to fully replace your VANOS solenoids, I highly recommend using URO or Pierburg Solenoids, rather than some crappy solenoids you can find on Amazon.
The URO brand is a great aftermarket budget option and Pierburg is a pricier but top quality brand.
In our opinion both of these options are better than the Genuine/OEM product. We don't generally recommend the Genuine brand since they are poorly constructed, fail easily, and are 3x the cost of the other solenoids. Please do not go the super cheap route and buy a set of off-brand solenoids from Amazon for $30 each. These solenoids are a crucial component of the timing and overall performance of your BMW/N54 engine.
You wouldn't put 87 octane gas in your N54, would you? As we mentioned prior, having clogged or dirty vanos solenoids can result in poor oil flow to the cams, and therefore poor timing. You might not want to fork out $300 for some new solenoids, especially if your BMW hasn't started to experience any of the symptoms to a severe extent, or enter limp mode.
The good news is: you can remove and clean your vanos solenoids, and it is relatively easy.