Jump to content
SAU Community

Rb20det Struggling To Hit Boost

White32gtst
 Share

Recommended Posts

White32gtst Rookie

White32gtst

Posted
Posted

can someone help with an issue in having with my rb20det, it seems to be struggling to go through 3000 to 4000rpm seems to be when it tried to hit boost, and then goes past 4000rpm fine hitting to 12psi. I've recently installed 32gtr injectors and ran individual resistors not sure if that would be an issue? Also I've tried fiddling with the boost tee and it doesn't seem to do anything even if I take the control screw right out? Could it be wastewater or the tee? Any suggestions on where I should start?

Link to comment
https://www.sau.com.au/forums/topic/458911-rb20det-struggling-to-hit-boost/
Share on other sites
White32gtst Rookie

White32gtst

Posted
  • Author
Posted

No It wasn't running great when I first bought it about 4 months ago and I've slowing been fixing it up. I thought it was the previous injector seals and leaking injectors that's why I replaced all of it. It seems to misfire only around 3-5k revs, just wondering where I should start looking at what the problem is coming from? I've heard igniter pack might be a good place to start?

White32gtst Rookie

White32gtst

Posted
  • Author
Posted

Replaced ignitor pack and had no difference, looking at splitfire Coilpacks now hopefully that fixes it. I read on forums about people changing the injectors to GTR and no one seemed to have this problem, so I'm hoping It isn't that. I'll still be taking it to a dyno once I've got it registered in about a week or two to get a tune.

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
      $5 Clock upgrade for R32 GTR

      By GTSBoy · Posted

      The attached document is fine. I just downloaded & opened it.
    • ToothDR32
      $5 Clock upgrade for R32 GTR

      By ToothDR32 · Posted

      Hello, sorry for being late to join the discussion, but my clock just died on me.   Ive tried to look at Michaels digital clock repair.docx and it doesnt work maybe the file has expired.   Please let me know if you can re upload it or take some youtube videos to show us how to get the clock installed? thanks
    • MissMintyR33
      R33 persistent issues. P/steering and lag/misfire

      By MissMintyR33 · Posted

      I thought that might be the case, thats what I'll start saving for. Thanks for the info 
    • jtha7
      Strange issue RB25DET wont start

      By jtha7 · Posted

      Ps i found the below forum and it seems to be the same scenario Im dealing with. Going to check my ECU coolant temp wire tomorrow    From NICOclub forum: s1 RB25det flooding at start up Thu Apr 11, 2013 7:23 am I am completely lost on this. Car ran perfectly fine when I parked it at the end of the year. I took the engine out and painted the engine bay, and put a fuel cell with an inline walbro 255 instead of the in tank unit I had last year. After reinstalling everything, the engine floods when the fuel pump primes. if i pull the fuel pump fuse it'll start, and as soon as I put the fuse back in it starts running ridiculously rich. I checked the tps voltage, and its fine. Cleaned the maf as it had some dust from sitting on a shelf all winter, fuel pressure is correct while running, but wont fire until there is less than 5psi in the lines. The fuel lines are run correctly. I have found a few threads with the same problem but no actual explanation of what fixed it, the threads just ended. Any help would be appreciated. Rb25det s1 walbro255 fuel pump nismo fpr holset hx35 turbo fmic 3" exhaust freddy intake manifold q45tb q45 maf   Re: s1 RB25det flooding at start up Fri Apr 12, 2013 5:07 am No, I didn't. I found the problem though. There was a break in one of the ecu coolant temp sensor wires. Once it was repaired it fired right up with no problems. I would have never thought a non working coolant temp sensor would have caused such an issue.
    • jtha7
      Strange issue RB25DET wont start

      By jtha7 · Posted

      Hi sorry late reply I didnt get a chance to take any pics (my mechanics on the other side of the city) but the plugs were fouled from being too rich. I noticed the MAF wasn't genuine, so I replaced it with a genuine green label unit. I also swapped in a different ignitor, but the issue remains. I've narrowed it down a bit now: - If I unplug and reconnect the fuel lines and install fresh spark plugs, the car starts right up and runs perfectly. Took it around the block with no issues - As soon as I shut it off and try to restart, it won't start again - Fuel pressure while cranking is steady around 40 psi, injectors have good spray, return line is clear, and the FPR vacuum is working. It just seems like it's getting flooded after the first start I unplugged coolant sensors to see if its related to ECU flooding but that didnt make a difference. Im thinking its related to this because this issue only started happening after fixing coolant leaks and replacing the bottom part of the stock manifolds coolant pipe. My mechanic took off the inlet to get to get to do these repairs. My mechanics actually just an old mate who's retired now so ill be taking it to a different mechanic who i know has exp with RBs to see if they find anything. If you have any ideas please send em lll give it a try. Ive tried other things like swapping the injectors, fuel rail, different fuel pressure regs, different ignitor, spark plugs, comp test and MAF but the same issue persists.
×
×
  • Create New...