Jump to content
SAU Community

Rb25det

smidy

By smidy,
in Engines & Forced Induction

 Share

Recommended Posts

smidy Community Regular

smidy

Posted
Posted

hi all

purchased my r33 gtst around 6mths ago, coupla mths later fitted 3" mandrel bent exhaust wit hiflow cat and cannon. ever since engine has been running very rich in fuel consumption :huh: and performance in pick up is "choking" so to speak whilst under heavier accelaration :) . i have spoken to a few people about this, and done the following, i have put standard BOV back on. replaced oxygen sensor in exhaust as this was not working to start!!! and had a fairly good check on vaccuum lines for air leaks etc. please help as fuel is not getting any cheaper :( ???????????????

smidy

Link to comment
https://www.sau.com.au/forums/topic/217506-rb25det/
Share on other sites
smidy Community Regular

smidy

Posted
  • Author
Posted
when you say choking do you mean miss fire? Check your coil packs

thought maybe that but when i purchased the vehicle there was a coil pack gone and had to take it back to get that done.

know what that feels like under acceleration and this just doesn't seem quiet as bad as the "miss" or "choke" that provided???

thanks for reply anything else?

Link to comment
https://www.sau.com.au/forums/topic/217506-rb25det/#findComment-3839951
Share on other sites
smidy Community Regular

smidy

Posted
  • Author
Posted
Super Air Flow Controller, can lean up your engine a bit to stop it running rich. Your standard ECU might not like the extra boost and go into Rich And Retard mode.

i'm not running any extra boost don't have any boost control parts just all standard been reading other threads about similar issues and some have said plugs. put new twin spark plugs in when originally purchased at time or coilpack replacement.

Link to comment
https://www.sau.com.au/forums/topic/217506-rb25det/#findComment-3839980
Share on other sites
smidy Community Regular

smidy

Posted
  • Author
Posted
Super Air Flow Controller, can lean up your engine a bit to stop it running rich. Your standard ECU might not like the extra boost and go into Rich And Retard mode.

i have also been told there might be a slight air leak in one of the vaccuum lines???? cause more fuel to be pumped , more air???

unneccessarily!!

Link to comment
https://www.sau.com.au/forums/topic/217506-rb25det/#findComment-3840008
Share on other sites
smidy Community Regular

smidy

Posted
  • Author
Posted
i have also been told there might be a slight air leak in one of the vaccuum lines???? cause more fuel to be pumped , more air???

unneccessarily!!

all good found a crack in me intercooler ;) bogged and fixed can't wait for me boost control now :cheers::cheers:

Link to comment
https://www.sau.com.au/forums/topic/217506-rb25det/#findComment-3841072
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

    • GTSBoy
      R33 GTST Steering Rack (49001-19U05) Rebuild?

      By GTSBoy · Posted

      I hadn't thought about the variable power steering assist. Presumably, it will always be the same level of assist as you get in an S14. The R32/3/4 are either helliishly heavy (at low speeds) if the solenoid is not powered at all, or hellishly too light (at high speed) if it is powered all the time. I presume that it is PWM controlled on those cars. I hadn't thought about the S cars not having variable assist. ugh. What crappy plebby cars they must be!  
    • Gantai
      R33 GTST Steering Rack (49001-19U05) Rebuild?

      By Gantai · Posted

      Hmm yeah that is a good point. It looks like it'll just bolt in with no real issue besides maybe the bushings being different. My other concern was that 2 pin plug that I assume is used in some way to control the rack solenoid depending on the speed signal from the ecu. The DMAX rack doesn't even have that plug though so, don't think it'll matter. Might just order the rack and see how it goes. Will update this when I figure something out
    • GTSBoy
      R33 GTST Steering Rack (49001-19U05) Rebuild?

      By GTSBoy · Posted

      I'd say it's a fair bet that the feed and return fluid lines will be in different enough spots that you would need to come up with a way to cut the originals short and adapt with new hard line adaption or braided teflon hoses or somesuch. But really, you have the car, you have the photos of the DMAX rack - you should be able to go out there and see for yourself whether they're in the same or different spots.
    • Gantai
      R33 GTST Steering Rack (49001-19U05) Rebuild?

      By Gantai · Posted

      I've been doing some looking around and honestly was just considering throwing a new rack at it. I saw that the dmax silvia rack bolts up into the 33 with the silvia bushings but not sure if the high pressure lines will sit in the correct spot. I believe other version of the 33 rack are the same/similar to the racks that can be opened up without as much fuss so I assume the dmax rack would fit but any ideas?
    • GTSBoy
      R33 GTST Steering Rack (49001-19U05) Rebuild?

      By GTSBoy · Posted

      I've never played with one, but I would expect that you are correct. That slot looks like it is intended to be used to unscrew the end, and the flats on the body would be better than grabbing it around the round bit with a pipe wrench. So, yeah, probably unscrews. You'll probably have to make a tool to drive in that slot.
×
×
  • Create New...