Jump to content
SAU Community

Rb25Det Boost Jumping

wounderz

By wounderz,
in Engines & Forced Induction

 Share

Recommended Posts

wounderz Explorer

wounderz

Posted
  • Author
Posted

thanks mate.

i will take out the boost controller

sorry for f**king with your time then!

for later on just put a new ecu for higher boost .

but to be honest it doesn't feel like it hitting 14 psi but some days it running fine

89CAL Grand Master

89CAL

Posted
Posted

14.7psi > stock boost

IS GREATER THAN

The ECU assumes a problem when it sees more airflow then its expecting so puts the thing into rich/retard so the car wont feel faster

Quite the opposite actually. I ran mine on 10psi when it had stock ECU thinking it was cool. Then one day I turned it back down to 8psi or so and it felt quicker. I put mine on a dyno at 10psi I think and the AFR's were in the mid/low 10:1 which is far to rich

Blackkers Experienced

Blackkers

Posted
Posted

man, Boost controller means you are not running stock boost!

so what you have to do now is: lower the boost and preferably find a better way of measuring it seeing as you didn't know what it was before.

then if the problem persists come back to us

Good luck

niZmO_Man Grand Master

niZmO_Man

Posted
Posted

Gap your plugs down to 0.7mm, turn off/disconnect your boost controller, check what turbo you have, if you have a standard turbo then budget for a replacement turbo, if you have an aftermarket one, budget for a new coilpacks + ECU + tune.

mic087 Community Regular

mic087

Posted
Posted

Lol.. this thread was a great read... glad I hung in there to make it to the second page.

Wounderz - We all get the shits here when people keep asking the same questions that have been covered 100000 times... All you need to do is search, then to top it all off you don't list your mods and not to be rude but do much about what you are talking about... Its difficult for us to help you when you don't have the basic knowledge.. I get everyone has to start somehwere and learn but start reading the threads and DIY articles..

As said above. remove your boost controller and re-plumb the stock solenoid and see if your bosst stays at a stable 7 SPI... if it does then you can try putting your boost controller in BUT wind down the boost level....

Thats my 2 c....

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
      R33 persistent issues. P/steering and lag/misfire

      By GTSBoy · Posted

      Power steering is probably because someone has nuked the HICAS CU and you no longer have the variable power asist doing what it is supposed to. How much boost are you running? You are aware that any more than 10 psi on the stock ECU is just asking for it to go to full R&R (that's Rich & Retard, which is effectively Retarded and Retarded!) which kills all the power. Depending on the exact conditions, it can just be runnign on the fat and stupid end of the maps, then the conditions change, you make a little more boost and the ECU goes into panic.
    • Kapr
      Freddy Plenum vs Genuine options RB25

      By Kapr · Posted

      @BuiltNotBought Just as GTSboy said.   If you want driveabilty and more low down torque..keep the stock runners. They are VERY good from a factory. I have them too on my RB25DET NEO and as a GTSboy i have fmic but with stock piping route(i have Blitz intercooler) Iam making around 320 BHP and the car pulls "hard" from like 2,5k all the way to 7k. I have it dyno tuned to mimic N/A power curve and making little less max torque due to the smallbox tranny. But driveability is very great. I had 350Nm below 3k so car feels very quick.   EDIT:  Not my channel but i saw this and i know that is what i want (and i have exactly this)  
    • MissMintyR33
      R33 persistent issues. P/steering and lag/misfire

      By MissMintyR33 · Posted

      Looking to sort out a couple of issues on my skyline  It recently was rebuilt, however rebuilder long story short did not give two flying effs about the work he did. So moving forward it's running but I have two persistent issues 1) it has a misfire / lag type of issue (was at higher RPMs but I had a dead piggy back ecu removed which improved it) now it's not as bad but still does it at random, I thought it may have been a boost issue I'm running an older turbosmart dual stage controller, turbosmart told me to try running off gate pressure however it still has a lag at random times. It has New MAF, maf plug, coil packs, sparks, CP harness.. injectors tested and cleaned. Factory ECU. 2) Power steering issue. It is tight as anything. Flushed power steering, rebuilt my pump because the bearing was shot. Flushed again still tight (mainly when parking and going slow into my driveway etc)  No kinks in hard lines, replaced the lines I could see had cracks. Still tough to steer.  I was told to shim a coin and place into the solenoid plug? Is there anything else. My steering angle sensor also has a issue. It's a used one I replaced, does it need to be calibrated? I feel like I've tried everything and this car is my voodoo doll.   
    • Dose Pipe Sutututu
      Neil's R33 Gts-t Build

      By Dose Pipe Sutututu · Posted

      Holy shit... wow!!! I totally missed this
    • MBS206
      Dose's Sometimes DIY and Pay Someone Home & Boat Improvement Thread

      By MBS206 · Posted

      One main filter. Each tank has a prefilter to keep rocks and small children out, then the big main filter that also does water separation. Clogged the first one so bad it was like a rev limiter at 3200rpm. Literally just like dropping the throttle off and maintaining rpm!
×
×
  • Create New...