Jump to content
SAU Community

Recommended Posts

1.) the sound it will make is not the same as the SR20 powered cars.

it is similar but not the same.

on the SR20's, that noise is caused even though they have the stock plumb back bov attached.

the return line of the S15 and S15's isn't large enough so once you increase boost a little bit, you start hearing that "DO DO DO" sound you described so well.

I can show you this in my car if you are in sydney.

The sound the skyline's make with no bov is more like a rattle snake.. like "trrrrrrrrrrr"

However, once you get a FMIC, the sound changes once again.

2.) Yes you need to block off the vacuum line as well.

a screw will do for that.

3.) Wether this damages the turbo is a whole other story.

there is no real evidence that it does or doesn't.

I know the theory of what happens with no bov all too well so no need to tell me.

Everyone has their own story/theory of what no bov will do or not do.

I don't feel the need to add mine as I have done it too many times and people obviously don't know how to search.

I'll add 2 things though.

1.) I had an ex rally car. it was a 88 Laser TX3 turbo. 1.6L

hi flow turbo.

was putting out 120kw at the front wheels when I disengaged the rears.

this thing was rallied for 50,000kms and I had it for about 20,000kms on the road.

the stock bov was removed.

it was running 1 Bar boost for the whole time, fluttering away on each gear change.

never had any turbo problems..

many others but no turbo ones.

2.) I chose to run the stock bov on my current car and even when I had my skyline for the simple reason that the car worked/works better.

it idles better, it doesn't jerk when you back off from throttle slowly..

it just runs smoother.

Even though my current S14 runs 1 bar boost and on anything above 5psi, it will flutter, normal driving on the road where you are on and off the throttle slowly rather than fast and harsh like on a track, the car behaves better.

up to you what you want.

I personally wouldn't go with no bov and my reasons are above.

if you want the "LOOK AT ME" thing, then go right ahead.

Link to comment
https://www.sau.com.au/forums/topic/62285-which-bov/page/2/#findComment-1177651
Share on other sites

  • 2 years later...

From what i understand and what others are saying its not a bov your after. Like the other guy said about taking the stock bov off and clogging the hole. This is actually bad for your turbo. That sound your askin for is compressor surge. When the throttle body closes all the boost built up has no where to go since u have no bov so it throws it back through the turbo making the chh chhhh chhhhh sound. Definately not recommend man.

Link to comment
https://www.sau.com.au/forums/topic/62285-which-bov/page/2/#findComment-3511669
Share on other sites

I personally have a HKS SSQ BOV - it makes a very nice SSHHHTTTT sound... not too loud which is wankie pankie in my opinion... bu you do need a bit of a let off sound as it' a turbo... I have an apexi power flow pod, fmic and a hks ssq - all three work in harmony and you get a SSHHHETTTTTFFF tu tu tu sound which is capped off with a fluttering sound which is tough as ... I reckon this is style... so yeah, my hats off to the HKS SSQ - if you do go for this, get that latest model as the older ones tend to affect your air flow metre and can be troublesome.

Cheers,

Link to comment
https://www.sau.com.au/forums/topic/62285-which-bov/page/2/#findComment-3511768
Share on other sites

The fine for an atmospheric BOV is

"Undue noise" $240 in QLD and 3 points

So if you get a quiet one you will be right. I had a turbo smart maximus the biggest they make on my old skyline and everytime i let off i had people on the foot path jump and other cars look and stare so i got rid of it.... HKS SSQV is the only way to go now...

yeah i use an apexi power d1 intake pod with a HKS ssq BOv n i get the nice flutter sound however i have alloy piping which helps a little, but it not to wanky.

i didn't know that was the penalty!! $240 & 3 points!!! wow :)

Link to comment
https://www.sau.com.au/forums/topic/62285-which-bov/page/2/#findComment-3512871
Share on other sites

Guest
This topic is now closed to further replies.


  • Similar Content

  • Latest Posts

    • Even more fun, leave all the ADAS stuff plugged in, but in different locations, hopefully avoid any codes!   And honestly, all these new cars with their weird electronics. Pull all the electronics out Duncan, and just shove an aftermarket ECU and if needed a trans controller in, along with a PDM. Make it run basic but race car styled!
    • To follow up a question from earlier too since I had the front bar off again (fking!) This is what is between the bumper and the drivers side wheel And this is the navigator side, only one thing but its a biggy! So basically....no putting coolers in the wheel arches without a lot of moving other stuff. Assuming I move to properly race prepping this car I'll take that job on and see how the computers respond to removing a whole bunch of ADAS modules
    • So I prepped the car for another track day on Wednesday (will be interesting to see coolant temps post flushing out and the larger reservoir, with a forecast of 3-14 being 20o cooler than last time I took it out). Couple of things to mention; since I am just driving the car and not taking a support vehicle, I took the rear seats out and just loaded the back up Team Trackday style. Look at all that space! To cover off removing the rear seat....it is weird (note the hybrid is probably different because it wouldn't have folding rear seats) Basically, you remove the lower seat base, very similar to a r series but it is a clip that pulls forward to release the base rather than it being bolted down. Easy Then, you need to remove the side section of the rear seat on each side. There is a 14mm head nut at the bottom of the side piece, the it slides upwards off a hook at the top to release; you also need to unhook the seatbelt from the loop at the top. Then the centre piece is weird. You need to release/fold the seats forward with the tab in the boot on each side From there, there are 2,x12mm headed bolts holding the rear of each seat to the folding bracket, under the trim between the rear seat and the boot (4x christmas tree clips there, they suck). The seat is out but you can see where the bolts attach to the bracket
    • As discussed in the previous post, the bushes in the 110 needed replacing. I took this opportunity to replace the castor bushes, the front lower control arm, lower the car and get the alignment dialled in with new tyres. I took it down to Alignment Motorsports on the GC to get this work done and also get more out of the Shockworks as I felt like I wasn't getting the full use out of them.  To cut a very long story short, it ended up being the case the passenger side castor arm wouldn't accept the brand new bush as the sleeve had worn badly enough to the point you could push the new bush in by hand and completely through. Trying a pair of TRD bushes didn't fix the issue either (I had originally gone with Hardrace bushes). We needed to urgently source another castor arm, and thankfully this was sourced and the guys at the shop worked on my car until 7pm on a Saturday to get everything done. The car rides a lot nicer now with the suspension dialled in properly. Lowered the car a little as well to suit the lower profile front tyres, and just bring the car down generally. Eternally thankful for the guys down at the shop to get the car sorted, we both pulled big favours from our contacts to get it done on the Saturday.  Also plugged in the new Stedi foglights into the S15, and even from a quick test in the garage I'm keen to see how they look out on the road. I had some concerns about the length of the LED body and whether it'd fit in the foglight housing but it's fine.  I've got a small window coming up next month where I'll likely get a little paint work done on the 110 to remove the rear wing, add a boot wing and roof wing, get the side skirt fixed up and colour match the little panel on the tail lights so that I can install some badges that I've kept in storage. I'm also tempted to put in a new pair of headlights on the 110.  Until then, here's some more pictures from Easter this year. 
    • I would put a fuel pressure gauge between the filter and the fuel rail, see if it's maintaining good fuel pressure at idle going up to the point when it stalls. Do you see any strange behavior in commanded fuel leading up to the point when it stalls? You might have to start going through the service manual and doing a long list of sensor tests if it's not the fuel system for whatever reason.
×
×
  • Create New...