Jump to content
SAU Community

Very Confused

sparco33

By sparco33,
in Engines & Forced Induction

 Share

Recommended Posts

sparco33 Contributor

sparco33

Posted
Posted

hey guys:

got a problem. ive got an rb25. ive just fitted a high flow tirbo (bearing and steel wheel). full exhaust, tubotech bleed valve, cold air, cooler. Whilst tuning it the guy says that its over boosting to 15psi in the high end boost range even tho its set to 10? it made 235rwkw?

any ideas why this may be??

Link to comment
https://www.sau.com.au/forums/topic/269636-very-confused/
Share on other sites
Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted
hey guys:

got a problem. ive got an rb25. ive just fitted a high flow tirbo (bearing and steel wheel). full exhaust, tubotech bleed valve, cold air, cooler. Whilst tuning it the guy says that its over boosting to 15psi in the high end boost range even tho its set to 10? it made 235rwkw?

any ideas why this may be??

turbotech does not have pre boost settings to work with, its over boosting because of a mechanical issue that is possibly related to the boost controller itself.

you need to play around with pre loads on the spring etc to get the controler working correctly. 15psi spike aint too bad for your setup, as long as its not leaning out and it tuned for it then you should just leave it

Link to comment
https://www.sau.com.au/forums/topic/269636-very-confused/#findComment-4590458
Share on other sites
TRB-001 Rising Star

TRB-001

Posted
Posted

sounds dumb but how long is ur bleed valve hose and where is it plumbed in.....just make sure the hose is as short as possible and picks up pressure as close to the intake housing of the turbo as possible, otherwise ull be prone to higher boost spikes

Link to comment
https://www.sau.com.au/forums/topic/269636-very-confused/#findComment-4590699
Share on other sites
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

sounds like a typical bad combination of wheels and a poor job on hi-flowing the turbo

they are the two reasons for OVERBOOST in your circumstance.

To be certain - remove the actuator, if its still doing it - 110% the turbo is a shit job.

Link to comment
https://www.sau.com.au/forums/topic/269636-very-confused/#findComment-4590715
Share on other sites
STATUS Grand Master

STATUS

Posted
Posted
sounds like a typical bad combination of wheels and a poor job on hi-flowing the turbo

they are the two reasons for OVERBOOST in your circumstance.

To be certain - remove the actuator, if its still doing it - 110% the turbo is a shit job.

agreed im seeing so many dodgy high flows lately from so called small boutique turbo shops.

Link to comment
https://www.sau.com.au/forums/topic/269636-very-confused/#findComment-4590731
Share on other sites
bored33 Grand Master

bored33

Posted
Posted

Check your wastegate opening and what dump have you got? Some people have problems with splits for a dump and the wastegate has trouble opening or releasing the gas. Your boost tee could be another problem.

Borrow a friend's electronic boost controller if you can and see if that helps any.

Link to comment
https://www.sau.com.au/forums/topic/269636-very-confused/#findComment-4590837
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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • r32-25t
      remote oil cooler hose size, 8,10 or an12?

      By r32-25t · Posted

      Mine is all -12, I’m running a dry sump in a billet block though 
    • GTSBoy
      "Cheap" bolt on turbo on RB25DET NEO

      By GTSBoy · Posted

      HG's high flow is not "bolt on". The core is shorter, moves the comp cover rearwards in the engine bay. means you have to deal with the inlet plumbing a little bit. This is probably something to consider with every "bolt on" turbo anyway.
    • MBS206
      "Cheap" bolt on turbo on RB25DET NEO

      By MBS206 · Posted

      HyperGear. Just get a high flow of the stocker. Good, reliable, and should bolt on. Yes it will want things like a retune once done, so you need to factor this in to your spend too.
    • Kapr
      "Cheap" bolt on turbo on RB25DET NEO

      By Kapr · Posted

      Hi. Iam looking for some "cheaper" bolt on turbo on RB25DET NEO. I do not want "big" power just better reliability than the stock turbo which is "fot now" good but is old and i do not think it has "easy" life. One the Skyline here running some "temu" china Turbo but i dont trust those... Thanks!  
    • Piggaz
      R33 GTR OEM parts + random parts and oils

      By Piggaz · Posted

      Hi guys, Making some space/cleaning up. A whole heap of random OEM R33 GTR parts and other random bits and bobs. I will update this thread as I go. Parts are located in Moorebank NSW 2170. Pickup preferred but will post at buyers expense. Prices are negotiable. If they don’t sell it will go in the bin. Item 1: BOV return pipe. $40 Item 2: RB26 cam gears. $20 Item 3: R33 GTR torque split, oil temp, boost centre gauge. $100 Item 4: RB26 fuel rail x 2. $20 each Item 5: RB26 Recirc valves. $50 Item 6: OEM upper front arms. $20 Item 7: Royal Purple Max Gear 75w-140 1 quart/946 ml x 5. $50 each or 5 for $200. Item 8: OS Giken 80w-250 diff oil 1 litre. $25 Item 9 Eibach springs. ers-11-140-60-0140. $100 https://www.streetfx.com.au/eib140-60-0060-eibach-ers-140mm-length-x-60mm-id-coil-over-spring?_ga_campaignid=22235933977&_ga_adgroupid=180146800292&_ga_keyword=&_ga_device=m&_ga_target=pla-295238231169&_ga_locint=&_ga_locphy=9071723&_ga_matchtype=&_ga_network=g&_ga_device=m&_ga_placement=&_gcl_id=CjwKCAjwlt7GBhAvEiwAKal0cvkVE_hstv24cDiaICsIk1oznH9zAoJf3By6vR3Tpe7jmByqM6JFHBoCZYAQAvD_BwE&gad_source=1&gad_campaignid=22235933977&gbraid=0AAAAADPiTbo1xAuvnjIWWYnezivf-BUSY&gclid=CjwKCAjwlt7GBhAvEiwAKal0cvkVE_hstv24cDiaICsIk1oznH9zAoJf3By6vR3Tpe7jmByqM6JFHBoCZYAQAvD_BwE    
×
×
  • Create New...