Jump to content
SAU Community

Help Me With My Boost Settings, Wastegate, Turbo Settings.

WogsRus

By WogsRus,
in Engines & Forced Induction

 Share

Recommended Posts

WogsRus Veteran

WogsRus

Posted
Posted (edited)

Ok all so please read the following post to get up to date.

http://www.skylinesaustralia.com/forums/in...p;#entry2732110

So basicaly this is the problem.

I installed a new GIZZMO boost controller, and it apears that the controller is stuffed so getting a new one, but this morning it decided to work for a little bit.

So at a settign of 10% duty, i managed 10.6 psi, but the strange thing is that the boost is only 7psi below 4500rpm, then once the cam has swithed over, it goes up to 10.6psi. I can set the gain then, but i manage to get funny overshoots, and if i back it off, it is very slow to build boost.

The problem i am having, is that it appears there may be some issues with my wastegate. below 4500rpm the boost is steady at 7psi, and above it shoots up to 10psi, eaven with no boost controll, ie. direct coupled wastgate to IC piping. I pulled the cover off and checked the wastgate, and by presurising it with a pump, i could see it move a good 3cm, the wastage arm that is, I presume that is enough. I took the arm off to ensure that it has not moved or something, and it appears to be ok. The wastgate shuts nice and firm, but the boost overshoot has me warried. It makes me think that my wastgate is too small or something.

Now the car is a stock r33, with a FMIC, HPS pod, Flyen 3" belmouth dump, no cat and 3" exhaust. SAFC II tuned pump, etc etc and stock turbo.

I was also wandering if it can be the dump pipe or the cat, causing turbulance or something of that nature? Can it be my turbo dying as well?

ANYONE help. Can you also get a softer spring for the turbo to allow for better boost controll?

For all those with a GIZZMO IBC or simmilar problems, can you shed some light so that i know what to look out for.

FORGOT TO MENTION, my coils are stuffed and i need to run a gap of .6mm to be ok, can this cause problems too?

PLEASE

Edited by WogsRus
WogsRus Veteran

WogsRus

Posted
  • Author
Posted

i went to see him, the issue is that the wastage should not be silyl as is, plus i still have the new coils to put in, the CAI to make up, and a few other befero i go in for a retune.

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

    • Chupapy
      Coolant leak?

      By Chupapy · Posted

      Is it alright to top up with just another green coolant?
    • Songo
      New kid on the block

      By Songo · Posted

      thanks GTSboy. My confusion at the moment is i am trying to locate the ignition, ECU battery power and the ECU negative The closest thing i can find is the for the S15 on Page 8 of the Wiring Specialties web page https://drive.google.com/file/d/0B9F33_M_GgENQnZ6STMxVmVNd1E/view?resourcekey=0-eZ4nNRwRoqa1qvKlWWHm8A I cannot find the same diagram for the R33 RB25DET Series 2 dash plug pin out.... Do you know what the Pins? or know where i can find the same pinout diagram for the RB dash plug? Thanks for the advice on the box... i like a 6 speed so might be on the lookout or the box now.. a topic of discussion for another post...
    • Chupapy
      Coolant leak?

      By Chupapy · Posted

      Will have a look at that. I cant see any leaks 
    • GTSBoy
      Coolant leak?

      By GTSBoy · Posted

      Put another overflow bottle (ie, a 1.25 coke bottle or similar) under the overflow hose and see if it is being pushed out there or if it is disappearing into the engine.
    • GTSBoy
      New kid on the block

      By GTSBoy · Posted

      Staring on a stand is no issue. You just have to wire everything up, give it fuel and cross your fingers that the stand is robust enough. Arranging the inlet plumbing is often the hardest part, without any surrounding structure to hand some of it from. No need for coolant if you only want to run it for <1 minute. As to the gearbox - I think the little Aisin box is a bit stronger than the other small Nissan boxes that went behind SRs, but I wouldn't be too keen to test its limits with the torque of a boosted 25. I don't know if you can retain the box and the tailshaft. The box won't connect to the RB without an adapter of some sort, which is either a plate that will push the engine forward (which is not good for fitting it into the bay's available space) or push the box back, which messes with the box position and tailshaft length - OR - cut and shut work on the bellhousing, which is a long way from "least modification". I'd be buying a new 370Z 6 speed or similar, doing what has to be done to that to make it fit RB (ie, cut and shut bellhousing) and the requisite tailshaft custom/mods.
×
×
  • Create New...