Jump to content
SAU Community

How Much Psi Can Stock R32/r33 Bov Handle

DFAULT

By DFAULT,
in Engines & Forced Induction

 Share

Recommended Posts

Cubes Grand Master

Cubes

Posted
Posted
i found the opposite while using the stock ECU, NO BOV caused no end of issues (RB25) with stalling and throttle response.

GTR BOV went on, problem went away :laugh:

But stalling etc is largely due to driving style as your already aware im sure :woot:

Not sure if its the complete opposite.

Throttle response was up with no bov (i.e partially on the throttle through a corner then nailing it) however it did have stalling issues and often backfiring on down changes or coming to a stop. The bastard always would stall driving in to my driveway.

Nothing I did to the pfc prevented it stalling or having the jerkyness drivability issue at low rpm when making some boost.

No bov... It did feel nice when I selected the next gear on 'full boost' partial throttle with a slow gear change as I didn't have to wait for the turbo to spool, boost was just there instantly. But.... I don't drive like that 90% of the time. Probably why I get 10.5-11l/100km's.

lol at chirping... I can chirp fourth if I try.. :ninja: lol not that its too good for the box. Chirping has everything to do with the clutch and how one shifts or should I say slaps.

  • 2 years later...
  • Replies 54
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Posted Images

teng Rising Star

teng

Posted
Posted (edited)

I know this is a very old thread but does anyone know where you can get a plumback hose for the GT-R stock BOV? It's like 40mm from the BOV to 30mm on the black hose that goes back to the intake. I can't read the vernier caliper that well so the size maybe way off but you get the idea.

Thanks.

Edited by teng
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Hrm... i think i have some in the boot of my car.

Lot of effort/cost to send to where you are - surely you can just get some hose made up mate?

And by that i just mean any old hose cut to suit, you dont need it to be any specific type really

teng Rising Star

teng

Posted
Posted

I see. Doesn't have to be any special reducer hose. I was searching for HKS straight reducers but can't find any online. I'll go to the workshop today and see if i can get a normal hose to fit.

Thanks R31Nismoid.

  • 1 month later...
geraus Mentor

geraus

Posted
Posted

Hey sorry to bring this old fourm back, but would blocking that bleed hole really make a diffrence joeyjojo? would i need another re-tune to do this? and how did u do it? did u just put a lil bit of weld? i wana give it a try to hold 17psi .

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MissMintyR33
      R33 persistent issues. P/steering and lag/misfire

      By MissMintyR33 · Posted

      I thought that might be the case, thats what I'll start saving for. Thanks for the info 
    • jtha7
      Strange issue RB25DET wont start

      By jtha7 · Posted

      Ps i found the below forum and it seems to be the same scenario Im dealing with. Going to check my ECU coolant temp wire tomorrow    From NICOclub forum: s1 RB25det flooding at start up Thu Apr 11, 2013 7:23 am I am completely lost on this. Car ran perfectly fine when I parked it at the end of the year. I took the engine out and painted the engine bay, and put a fuel cell with an inline walbro 255 instead of the in tank unit I had last year. After reinstalling everything, the engine floods when the fuel pump primes. if i pull the fuel pump fuse it'll start, and as soon as I put the fuse back in it starts running ridiculously rich. I checked the tps voltage, and its fine. Cleaned the maf as it had some dust from sitting on a shelf all winter, fuel pressure is correct while running, but wont fire until there is less than 5psi in the lines. The fuel lines are run correctly. I have found a few threads with the same problem but no actual explanation of what fixed it, the threads just ended. Any help would be appreciated. Rb25det s1 walbro255 fuel pump nismo fpr holset hx35 turbo fmic 3" exhaust freddy intake manifold q45tb q45 maf   Re: s1 RB25det flooding at start up Fri Apr 12, 2013 5:07 am No, I didn't. I found the problem though. There was a break in one of the ecu coolant temp sensor wires. Once it was repaired it fired right up with no problems. I would have never thought a non working coolant temp sensor would have caused such an issue.
    • jtha7
      Strange issue RB25DET wont start

      By jtha7 · Posted

      Hi sorry late reply I didnt get a chance to take any pics (my mechanics on the other side of the city) but the plugs were fouled from being too rich. I noticed the MAF wasn't genuine, so I replaced it with a genuine green label unit. I also swapped in a different ignitor, but the issue remains. I've narrowed it down a bit now: - If I unplug and reconnect the fuel lines and install fresh spark plugs, the car starts right up and runs perfectly. Took it around the block with no issues - As soon as I shut it off and try to restart, it won't start again - Fuel pressure while cranking is steady around 40 psi, injectors have good spray, return line is clear, and the FPR vacuum is working. It just seems like it's getting flooded after the first start I unplugged coolant sensors to see if its related to ECU flooding but that didnt make a difference. Im thinking its related to this because this issue only started happening after fixing coolant leaks and replacing the bottom part of the stock manifolds coolant pipe. My mechanic took off the inlet to get to get to do these repairs. My mechanics actually just an old mate who's retired now so ill be taking it to a different mechanic who i know has exp with RBs to see if they find anything. If you have any ideas please send em lll give it a try. Ive tried other things like swapping the injectors, fuel rail, different fuel pressure regs, different ignitor, spark plugs, comp test and MAF but the same issue persists.
    • GTSBoy
      Freddy Plenum vs Genuine options RB25

      By GTSBoy · Posted

      My return flow is custom and puts the return behind the reo, instead of at the bottom. All my core is in the air flow, rather than losing some of it up behind the reo. I realise that the core really acts more as a spiky heatsink than as a constant rate heat exchanger, and that therefore size is important.... but mine fits everything I needed and wanted without having to cut anything, and that's worth something too. And there won't be a hot patch of core up behind the reo after every hit, releasing heat back into the intake air.
    • Murray_Calavera
      R33 persistent issues. P/steering and lag/misfire

      By Murray_Calavera · Posted

      There is a really fun solution to this problem, buy a Haltech (or ECU of your choice) and put the MAF in the bin.  I'm assuming your going to want more power in future, so you'll need to get the ECU at some stage. I'd put the new MAF money towards the new ECU. 
×
×
  • Create New...