The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

BOV sound in an automatic?

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

deadlyforce

15+ Year Contributor
131
3
Feb 20, 2006
Hagerstown, Maryland
I've had my Eclipse for about 6 months, and just thought I had a really bad boost leak (didn't find any) or something else was wrong, because I had never heard my BOV. Well, today I let a buddy of mine drive me around town, and I heard the BOV quite a few times. He was shifting manually, L, 2, D, O/D, and when I attempted it, I couldn't get it.
What RPM's do I shift at to hear it? Anyway to do this at higher speeds, like highway? Pretty much stock everything, except for custom exhaust (cat-back) and a K&N filter. I searched, and I couldn't find anything specifically related to auto trannys and the BOV "whistle".
 
Throttle closes, BOV opens. If the throttle never closes, the BOV never opens... that's why you never hear it. What speed you shift at won't change anything.
 
dis that auto and get a manual, for me if you drove sport car, it should be a manual, if it auto it for women.
 
Not sure if this is also true for the 2Gs, but on the 1Gs the CBV (BOV) is situated on the passenger side, and is MUCH more audible in the passenger seat, especially with the window down. Even the stocker. And yeah, the CBV only opens when the throttle plate is closed, and there's still boost coming into the intercooler pipes. Just rev the car firmly to around 5K and let off abruptly.
 
Maybe that's what it is. I always drive in D, but today my buddy was driving it for no more than 5 minutes. I started to yell at him for shifting (I know it's bad), but I shut up when I heard the BOV. I was literally in awe as I've never heard it before on my car. I try to drive fuel efficiently so I never abrubtly let off the gas, maybe that's why I never hear it. I don't know, I'm about to hop on the highway to go to the store anyway, so I'll try it.
Also, I didn't choose an auto, I got a great deal on this car and I couldn't pass it up. Shit, I didn't even know it was that much of a sports car until I came on here and other sites and did my research. I like my auto, great for a DD, but had I known what I know now, I would've looked for a stick. Meh, I'm not gonna race it anyway, still looking for an AWD for that.
 
Oldman, you of all should know that you can hear the stock CBV, it just isn't very loud. He hasn't said anywhere that he's venting. Yet.
 
Talesin said:
Oldman, you of all should know that you can hear the stock CBV, it just isn't very loud. He hasn't said anywhere that he's venting. Yet.
:D I know he hasn't but I figure if he is allowing his buddy to put his car through hell just so he can hear his BOV, he must be venting by now. :)
 
No, all I want is to know that my car is running properly. I do not want to rice it up. If I did do you think I would be bone stock? Mitsubishi everything. And I do not plan on venting, I only let my buddy drive me to the store to pick up my migraine medicine. I had a migraine at the time, so I let him drive. I live like three minutes from the store, so I let him do it. It wasn't my intention to hear the BOV, he just made it happen and I wanted to know how. I'm not that big of a n00b to destroy my tranny just for a sound, but it was nice to know that it still works. I will NOT vent my BOV until I have all of the supporting mods, I want to do things right. I just don't have the money too right now. Shit, I took my change to a coinstar to get the money to make a boost leak tester.
 
oldman said:
:D I know he hasn't but I figure if he is allowing his buddy to put his car through hell just so he can hear his BOV, he must be venting by now. :)

His tranny, or his oil? ^_^ Really, I still don't understand why people have such a hard-on for a stupid little whistle. I'm tempted to set up an air horn to my idle switch, with an on/off. Turn it on whenever driving near a ricer. *whizzzHOOOOOOONKwhizzzzzHOOOOOOONK*

And don't worry, deadlyforce. We aren't calling you a ricer, it's just a standing point of humor given how many new DSMers come in, and their first question is how to get the 'BOV' to hiss really loud.
 
TSIMonsteR said:
check out the 1/4 times list, and look at the fastest DSM's on this boerd. 4 of the top 5 are autos..... .......... Idiot

calm down dude. That just my opinion, for me auto such ass, if he want heard the bov get a manual. BTW I think your car is AUTO !!
 
I didn't say that I wanted to hear it. I don't care if it's loud, quiet, or non-existant. I just wanted to know what I was doing wrong because I was never able to accomplish it. I don't want a louder one, I couldn't care less as long as I know that it's working. I've replaced a lot in this car, and I don't have the money for something else. I didn't ask how to make it louder, I asked what I was doing wrong because I never heard it. I knew I was building boost, was positive I didn't have any boost leaks, and was unsure of what the problem was. I was just driving too soft/easy.
 
markGSX said:
So? The autos in full drag cars are a far cry from what we're talking about here.

Still, it is kind of unnecessary to say that when the thread is about his BOV, not asking for oppinions on which kind of transmission he has.
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Build Thread Updates

Latest Classifieds

  • For sale 4G63 3 inch Magnaflow SS high flow cat
    3 inch Magnaflow stainless cat. High flow. 18.25 inches. Flange holes are 4 1/8 center. Has...
    • Galant665
    • Updated:
  • For sale 4G63 Forge Motorsports BOV
    Original Forge Motorsports bov. Adjustable with over 80 clicks on the dial. Nice to use for...
    • Galant665
    • Updated:
  • Wanted 1g 1991 Black Cherry Eagle Talon
    5-speed
    • bamatalon
    • Updated:
    • Expires
  • For sale Misc Left Over Parts
    Hello, I have a few left over parts for sale, these do not include shipping, please pm me for a...
    • r3dmak
    • Updated:
    • Expires
  • For sale Alpha Injection Clinic 2200cc for 4G63 DSM/EVO
    I have a set of Alpha Injection Clinic 2200cc high z injectors for DSM/EVO. I am stepping up to...
    • spoolinpos
    • Updated:
    • Expires
Back
Top