Jump to content
SAU Community

Boosting Problem

Mid_Nite_R33
 Share

Recommended Posts

Mid_Nite_R33 Mentor

Mid_Nite_R33

Posted
Posted

I have an R33 gtst, with mild mods, FMIC, pod, full exhaust and T piece boost controller

My problem is that sometimes the car goes hard and the next minutes it doesnt boost at all and drives like shit, the boost gauges just goes to the "0" position and the car simply is NA, while this is happening there is a resonating/rattling sound coming from somewhere in the front of the engine, possibly turbo? Then a few moments later it boost to 10 psi like it should and goes hard

The car was dynoed about 2 weeks ago and since then its been like that.

Would it be something to do with the wastegate?

If anyone can give me some advice I'd appreciate it.

Thanks

Link to comment
https://www.sau.com.au/forums/topic/171691-boosting-problem/
Share on other sites
Mid_Nite_R33 Mentor

Mid_Nite_R33

Posted
  • Author
Posted (edited)
Not to sure if you checked this or not..

but could be spark plugs?

Post your dyno sheet as well.. See if you getting flat spots or not...

Hmm sound coming from front? not good to hear.. but can be anything..

before the dyno run car had copper plugs pregapped to 0.8mm, for the dyno run the tuner put in new copper plugs and gapped them to 0.6mm

As for the sound it can be anything but it seems definately related to the car not boosting because when the car goes hard like it should the sound isnt there

post-22289-1181119762_thumb.jpg

Edited by Mid_Nite_R33
Mid_Nite_R33 Mentor

Mid_Nite_R33

Posted
  • Author
Posted

the tuner put in 0.6 plugs for a computer that was meant to be tuned along with higher 12 psi boost level. but in the end wasnt and the plugs stayed.

How can the smaller gap prevent the car from boosting and what would that noise be?, and on the other hand it boost most of the time.. :D

siddr20 Grand Master

siddr20

Posted
Posted

I seriously think you should put those 0.8 gapped plugs in..

Try those out and see.. Im sure it will fix it..

AS for the noise.. no idea man.. Maybe go back to the place where you got the dyno done and him what it is.. Tell him its been happening since you got the dyno done..

cheez Mentor

cheez

Posted
Posted

check your zorst, i used to have a rattle thaht sounded like was coming from the front of the bay and ended up being a snapped cat zorst nut that let the cat rattle against the front pipe. check the zorst!!

Mid_Nite_R33 Mentor

Mid_Nite_R33

Posted
  • Author
Posted
check your zorst, i used to have a rattle thaht sounded like was coming from the front of the bay and ended up being a snapped cat zorst nut that let the cat rattle against the front pipe. check the zorst!!

I got the exhaust checkd, the guy banged it and rekons there is nothing wrong with it...hmmm

What happened with you exhaust? whats a cat exhaust nut? u mean u had a bolt loose in your system or what?

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

    • GTSBoy
      R32 GTR EV? The leaf of the Godzilla's!

      By GTSBoy · Posted

      Yes...but look at the numbers. There is a tiny tiny fraction of the number of Joules available, compared to what is used/needed. Just because things are "possible" doesn't make them meaningful.
    • Butters
      UniClutch

      By Butters · Posted

      Thanks for taking the time to post that ! If anything changes or happens please do update us. 
    • joshuaho96
      R32 GTR EV? The leaf of the Godzilla's!

      By joshuaho96 · Posted

      Somehow Vertimass/Oak Ridge National Labs has figured out a catalyst that can convert ethanol into C9-C10 hydrocarbons in basically a single step without ending up with a bunch of ethylene or similar waste products: https://patents.google.com/patent/WO2023224867A1/en I still don't think anything like this will keep us from needing to transition to EVs regardless along with all kinds of other electrification, but things like this will go a long way towards alleviating the problem of how to electrify things like planes. Renewable diesel is seemingly an easier problem as well, Chevron is already running refineries for the stuff and the primary feedstock is tallow and other waste fats from agriculture.
    • RB2533
      UniClutch

      By RB2533 · Posted

      Ok so I have sorted everything with my uniclutch and  i can offer up a bit of feedback and some things that might help others.    I found problems with factory damper line. Weird shit and had trouble with peddle adjustment    I used this https://au.gktech.com/products/r33-gts-t-skyline-braided-clutch-line?_pos=2&_sid=22b01b9b9&_ss=r Also when adjusting peddle leave a bit of play. You can get into a over stroke condition easy.. Make sure you can push the slave forward after adjusting to confirm fluid can return to master then you will need to pump it up heaps…..not sure why but that’s how it is.    last thing the splined adapter is machined perfectly. If your input shaft is old like mine was I would put a bit of valve grinding paste on it and stroke it like a 15 year old. Just to give it a tad more clearance and to better match it to the spline.    reason is on a near flat shift I have had situation where the peddle returns a millisecond after you lift from the clutch. No slip or anything but I reckon this is due to tolerance on the spline being way tighter than stock clutch and binding for a sec. I think this will go away but also my spline was old. Box is old so I guess I should have checked better. It’s a super neat fit.    it feels light as and holds awesome without any noise    
    • Duncan
      Rv37 400r questions

      By Duncan · Posted

      My Fuga Hybrid is JDM, 2014 model but very similar to the V37 from the looks of things..same platform just physically larger and very comfortab;e
×
×
  • Create New...