Stage 1+ (v390)
Evolving Member
Joined: Jul 2005
Posts: 101
Likes: 0
From: Savannah, GA
Originally Posted by jay_are
i have been reading up on this and it seems that vta doesnt bother the 05's like it does on the 03-04's. not sure why though. just what i have read. could be b.s. trying to sell those hks bovs. lol
Newbie
Joined: Mar 2005
Posts: 99
Likes: 0
From: Cape Girardeau, MO
good to hear. how is the volume on that hks? ( you still have the stock intake i am guessing? )i have read that they are loud as hell. i kind of hope that is true. hehe. well, that and the fact that they hold boost better than the stocker.
Originally Posted by jay_are
good to hear. how is the volume on that hks? ( you still have the stock intake i am guessing? )i have read that they are loud as hell. i kind of hope that is true. hehe. well, that and the fact that they hold boost better than the stocker.
it was considerably loud..but then i added the k&n drop in filter..and da*n....it got louder!!! i just wish it was the high pitch sound!!! it just makes a fluttering sound
Newbie
Joined: Mar 2005
Posts: 99
Likes: 0
From: Cape Girardeau, MO
i understand what you are saying in that it shouldnt make a difference since it is still a drawthrough maf. either way i will be able to post on here sometime this weekend after the install and let you know.
here is the thread...took me a little to find it...thank me...j/k enjoy all 05s
https://www.evolutionm.net/forums/sh...&highlight=bov
https://www.evolutionm.net/forums/sh...&highlight=bov
Newbie
Joined: Mar 2005
Posts: 99
Likes: 0
From: Cape Girardeau, MO
i have the same k & n filter as you eling99, but i am gonna swap it out for the injen intake. if there are no problems i may have a slightly used filter for sale.
on the fluttering issue, is it at lower rpms or at any point?
on the fluttering issue, is it at lower rpms or at any point?
Originally Posted by jay_are
i have the same k & n filter as you eling99, but i am gonna swap it out for the injen intake. if there are no problems i may have a slightly used filter for sale.
on the fluttering issue, is it at lower rpms or at any point?
on the fluttering issue, is it at lower rpms or at any point?
about the fluttering thats the sound the bov makes,,,it doenst make the high pitch sound i want...when u hit boost, it will make that sound...of course higher rpms will be a louder sound!!!
Newbie
Joined: Mar 2005
Posts: 99
Likes: 0
From: Cape Girardeau, MO
oh, ok. the reason i asked was because my buddy has a srt-4 ( dont flame or laugh ) and his bov flutters in high boost if he is in lower rpms. like pulling away from a stop light at light throttle it will flutter instead of venting normally. i know that they are 2 different cars. just wondering if that was the same for evo's as well.
Originally Posted by jay_are
oh, ok. the reason i asked was because my buddy has a srt-4 ( dont flame or laugh ) and his bov flutters in high boost if he is in lower rpms. like pulling away from a stop light at light throttle it will flutter instead of venting normally. i know that they are 2 different cars. just wondering if that was the same for evo's as well.
is cool..let me know how u like the injen intake..and if u could take some pics too!! thanx
Newbie
Joined: Mar 2005
Posts: 99
Likes: 0
From: Cape Girardeau, MO
pics are no problem. should get some good ones. hopefully i get it all done tomorrow and get the pics up on sunday/monday at the latest. i will try to get a sound clip if i can and post it too, but highly doubtful for the sound clip unless the guy with the fancy cell phone or the cam corder shows up.
Originally Posted by jay_are
pics are no problem. should get some good ones. hopefully i get it all done tomorrow and get the pics up on sunday/monday at the latest. i will try to get a sound clip if i can and post it too, but highly doubtful for the sound clip unless the guy with the fancy cell phone or the cam corder shows up.
Newbie
Joined: Mar 2005
Posts: 99
Likes: 0
From: Cape Girardeau, MO
i found something that might explain the vta a little better. this is from malibu jack ( evom guru )
okay.. I'm not going to go onto a VTA rant, the HKS SSQV will generally "Idle" better than other blowoff valves in VTA, however VTA DOESNT WORK RIGHT..
Anyone telling you their not having an idling problem, or part throttle stalling HAS THEIR BOV MISADJUSTED.. what their not realizing is the incredible amount of compressor surge their getting instead while the bov isn't opening properly...
Most diverter valves can be partially open at idle due to high engine vacuum, the DV's spring and adjustment are should be adjusted in such a way that its closed for the most part when there's lower engine vacuum, and the spring assists in keeping the DV closed under boost (so theirs greater pressure differential holding it closed, then the force trying to open it under boost) You only need enough spring and adjustment pressure so it OPENS EASILY AT PART THROTTLE, and only enough spring pressure to retain the maximum boost your running..
IF you use a heavy spring, or shim the spring, or increase the adjustment so it stays completely closed at idle, the spring pressure may be too great and will hurt part throttle drivability, it will stumble off-idle, surge and buck when shifting at part throttle, flutter, and other problems.. but MOST IMPORTANTLY it will cause pretty severe compressor surge at those times (which is a majority of the driving most of you will be doing in daily driving) this will wreak havoc with the compressor internals and quickly damage the bearings and shaft..
IF YOU HAVE A STOCK MAF, YOU CANNOT ADJUST A BOV IN AN ADEQUATE MANNER TO PREVENT THIS FROM HAPPENING..
There are a few BOV's out there that will idle fine without much adjustment and will work pretty well, the HKS SSQV is a good example, but even the hks flutters and has slight surge at part throttle, and low load venting will still cause the idle to drop or potentially stall (A very rich condition)
Its obvious the people doing this are two types..
1) They like the sound and could care less about performance
2) they have a workaround that doesnt require doing MORE HARM THEN GOOD (ie, speed density, blowthrough maf, etc..)
I wish this topic would go away, any car with a drawthrough MAF (The Evo and other cars) just won't run correctly, and SHOULD NOT BE VENTED TO THE ATMOSPHERE at the expense of making adjustments to accomodate it, it just hurts the cars performance and longevity.
Ok.. Now that I'm done with my rant.. The good news is the HKS SSQV is going to be the one that doesnt require adjustment at all, and it will idle and won't surge much at part throttle, it will hold pretty much any amount of boost you can throw at it.. Unfortunately, you'll never be able to adequately work around the rich condition when it vents at any point, the EIDS will work somewhat, but it "Desensitizes" the MAF's response to changes in airflow, and therefore may hurt the car's throttle response.
The real answer is, if you have a stock MAF, don't VTA.. It just leads to headaches. If you don't want to listen to the countless people who understand how these devices work and what compromises you make to get them to work, then you can be left to your own devises.. but understand that the only reason for VTA is for the sound, I don't consider that to be a good reason to hurt your car.
__________________
http://www.aktivematrix.com
Yes.. I finally washed my car, and it looks worse than when it was dirty..
BTW, Anyone wanting to contact me should try AIM or send me a PM here. I cannot normally reply to E-mail questions in a timely manner (if at all, I get anywhere from 1500-3000 e-mails a day, mostly untrappable spam) due to the locations I am when I get my mail. If you want a quick reply use the PM's..
okay.. I'm not going to go onto a VTA rant, the HKS SSQV will generally "Idle" better than other blowoff valves in VTA, however VTA DOESNT WORK RIGHT..
Anyone telling you their not having an idling problem, or part throttle stalling HAS THEIR BOV MISADJUSTED.. what their not realizing is the incredible amount of compressor surge their getting instead while the bov isn't opening properly...
Most diverter valves can be partially open at idle due to high engine vacuum, the DV's spring and adjustment are should be adjusted in such a way that its closed for the most part when there's lower engine vacuum, and the spring assists in keeping the DV closed under boost (so theirs greater pressure differential holding it closed, then the force trying to open it under boost) You only need enough spring and adjustment pressure so it OPENS EASILY AT PART THROTTLE, and only enough spring pressure to retain the maximum boost your running..
IF you use a heavy spring, or shim the spring, or increase the adjustment so it stays completely closed at idle, the spring pressure may be too great and will hurt part throttle drivability, it will stumble off-idle, surge and buck when shifting at part throttle, flutter, and other problems.. but MOST IMPORTANTLY it will cause pretty severe compressor surge at those times (which is a majority of the driving most of you will be doing in daily driving) this will wreak havoc with the compressor internals and quickly damage the bearings and shaft..
IF YOU HAVE A STOCK MAF, YOU CANNOT ADJUST A BOV IN AN ADEQUATE MANNER TO PREVENT THIS FROM HAPPENING..
There are a few BOV's out there that will idle fine without much adjustment and will work pretty well, the HKS SSQV is a good example, but even the hks flutters and has slight surge at part throttle, and low load venting will still cause the idle to drop or potentially stall (A very rich condition)
Its obvious the people doing this are two types..
1) They like the sound and could care less about performance
2) they have a workaround that doesnt require doing MORE HARM THEN GOOD (ie, speed density, blowthrough maf, etc..)
I wish this topic would go away, any car with a drawthrough MAF (The Evo and other cars) just won't run correctly, and SHOULD NOT BE VENTED TO THE ATMOSPHERE at the expense of making adjustments to accomodate it, it just hurts the cars performance and longevity.
Ok.. Now that I'm done with my rant.. The good news is the HKS SSQV is going to be the one that doesnt require adjustment at all, and it will idle and won't surge much at part throttle, it will hold pretty much any amount of boost you can throw at it.. Unfortunately, you'll never be able to adequately work around the rich condition when it vents at any point, the EIDS will work somewhat, but it "Desensitizes" the MAF's response to changes in airflow, and therefore may hurt the car's throttle response.
The real answer is, if you have a stock MAF, don't VTA.. It just leads to headaches. If you don't want to listen to the countless people who understand how these devices work and what compromises you make to get them to work, then you can be left to your own devises.. but understand that the only reason for VTA is for the sound, I don't consider that to be a good reason to hurt your car.
__________________
http://www.aktivematrix.com
Yes.. I finally washed my car, and it looks worse than when it was dirty..
BTW, Anyone wanting to contact me should try AIM or send me a PM here. I cannot normally reply to E-mail questions in a timely manner (if at all, I get anywhere from 1500-3000 e-mails a day, mostly untrappable spam) due to the locations I am when I get my mail. If you want a quick reply use the PM's..
Newbie
Joined: Mar 2005
Posts: 99
Likes: 0
From: Cape Girardeau, MO
against all opinions, yes. i will run it this way for a bit. i am also waiting on the exede with smart upgrade. i will probably get the recirc kit if i have any problems. either that or start studying the other type of intake that malibu talks about later in that same post.
i hate research. it only leads to more research. hehe
i hate research. it only leads to more research. hehe
Originally Posted by jay_are
against all opinions, yes. i will run it this way for a bit. i am also waiting on the exede with smart upgrade. i will probably get the recirc kit if i have any problems. either that or start studying the other type of intake that malibu talks about later in that same post.
i hate research. it only leads to more research. hehe
i hate research. it only leads to more research. hehe
i totally agree with u on the research part.....man..i want xede with smart too..i have safc and mbc right now!! hey..but seriously let me know how u like xede with smart!!!!