Jump to content
SAU Community

Recommended Posts

hi i have an R33 currently runs a garret gt35/40 ball bearing turbo, apexi fc commander, Eboost street dual stage controller, Turbosmart 38mmexternal , front mount cooler i have been havig this problem where it wont make full boost on low or high setting bu instead the wastegate will open at 4 or 5 pound instead of 7 on low i cant seem solve ths problem can some one plase help would be greatly appreciated thanks

Link to comment
https://www.sau.com.au/forums/topic/431020-boost-problems/
Share on other sites

I would expect such a turbo to have no less than a 10 psi actuator and quite possibly a 14 psi actuator. It would (should) therefore be impossible to get such low boost. I suggest you hook up another boost gauge to double check. Try it connected to plenum (use the connection that the factory boost gauge hooks up to temporarily). Also try it connected to the boost tap where the boost controller gets its signal, assuming that this is on the turbo hot pipe or turbo outlet. We're looking to see if there's any significant difference between them that may explain the problem, whilst simultaneously not trusting your existing gauge.

Link to comment
https://www.sau.com.au/forums/topic/431020-boost-problems/#findComment-6993814
Share on other sites

thanks but its deffinetly not making the boost you can notice the it because on high boost setting it should make 20 but on the 2 boost gauges that i do have its only making it to 4 0r 5 ?

Edited by Ryanlonno33
Link to comment
https://www.sau.com.au/forums/topic/431020-boost-problems/#findComment-6993821
Share on other sites

In that case, please detail;

  1. Where the boost gauges are connected,
  2. If there are any horrible noises while on boost,
  3. If anyone has had any intercooler piping apart lately,
  4. If you have a rubber or silicone turbo inlet pipe/hose thingo that may be sucking shut,
  5. Has your catalytic converter collapsed?
Link to comment
https://www.sau.com.au/forums/topic/431020-boost-problems/#findComment-6993850
Share on other sites

1. they are both connected into the plenium (one is the eboost street as that shows your boost)

2.no horrible noises ony hear the waste gate opening and the screamer pipe

3.i have had the intercooler out

4.its silicone and i dont think its sucking shut because its only started happening all of a sudden well it did it a few times then come good but this time just isnt coming good also around that time i blew my heater core?

5.i dont thin k so

Link to comment
https://www.sau.com.au/forums/topic/431020-boost-problems/#findComment-6993859
Share on other sites

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


  • Similar Content

  • Latest Posts

    • My thought is if you were just moving it forward and the upstream geometry remained the same, then no difference at all. But because the current one has the filter direct into the AFM inlet, you effectively have the best chance of a completely symmetric air flow profile upstream, and in, the AFM, whilst the aftermarket inlet thingo has a (small, to be sure) bend between the filter and the AFM. That would bias the flow to the outside of the bend (downstream of the bend) which might well reduce the size of the signal seen by the AFM, for the same total flow rate. Having said that: If you're proposing to make your inlet look like a hybrid of your existing one and the aftermarket one, such that there is no bend where the filter is clamped on... then I say it will be just fine. If there is going to be such a bend, then, if you can align the insertion of the AFM blade such that it is at right angles to the plane of the bend, then there is a better than even chance that the centreline velocity where the blade is will remain more or less the same, and the velocity will just be a little faster to the outside of that, and just a little slower to the inside. **This is not professional investment advice and you should consult a suitably qualified ouija board, tea leaves or the intestines of a goat for more accurate prognostication.
    • Hi Tao, Thanks for your reply.  It's been a while and I managed to get the valve stem seals replaced with the head on the car.  Unfortunately this didn't solve my issue, the car still smokes a lot after idling (to be honest during idle you can see a bit of blue smoke from the exhaust), same after deceleration. I will try disconnecting the valve cover breathers, do I leave the PCV valve in? By engine oil drain pipe, do you mean the turbo oil drain?
    • What about if you just give it direct 12v and earth?
    • Hi guys . Can someone help me  I bought an Android screen for my Nissan fuga but it won't turn on   
    • My guesstimate, with no real numbers to back it up, is it won't effect it greatly at all.its not a huge change in position, and I can't see the air flow changing from in turbulence that much based on distance, and what's in front of it. Johnny and Brad may have some more numbers to share from experience though.
×
×
  • Create New...