Jump to content
SAU Community

Recommended Posts

 HKS SSQV blow off valve. Hollowed out catalytic converter. 3'' JDM catback.

Compression is between 145-150 on all 6 cylinders. Metal headgasket. Nismo lightened flywheel. New intake plenum gasket. Timing belt/waterpump/idler and tension are all in great shape. Almost new ACT clutch(good for 400hp). Iridium spark plugs. New OEM thermostat. New air filter. HICAS lock bar. AC and HICAS were removed 

I just bought my car yesterday and realized some black soot and the smell of fuel while drivin I was told this mean my car is runnin rich.... How do I fix this help plz

Link to comment
https://www.sau.com.au/forums/topic/403716-r32-gts-t-running-rich/
Share on other sites

Atmo Blow off valve + stock ECU (without tune) is a recipe for disaster (running rich, stalling etc).

Without a functioning cat, you will find alot of black soot on your bumper, I hope you look forward to cleaning it regularly.

Atmo Blow off valve + stock ECU (without tune) is a recipe for disaster (running rich, stalling etc).

Without a functioning cat, you will find alot of black soot on your bumper, I hope you look forward to cleaning it regularly.

I'll hazard a guess that this is your problem, too.

Essentially, the stock rb20 has a pipe that recirculates the released from the BOV back into the intake to be reused. When you remove the pipe or run an atmo BOV, your ecu still thinks the air being released back into your intake and adjusts the air/fuel ratio accordingly. Regardless if the air is there or not it will distribute the fuel, which is why it's running rich. Too much fuel for the amount of air going back in.

The remedies are either getting a stock bov and recirculating pipe or getting your car tuned for the new BOV, from which it will no longer make the assumption that the air released by the BOV is going back into the intake.

Edited by Truffles
  • 2 weeks later...
  • 2 weeks later...

Sorry to hijack, but i have a 260rs (R33 GTR) stagea and it has twin atmo BOV, stock ECU, aftermarket boost controller, SAFC, turbo back exhaust system and everything else is stock.

The SAFC is set to default settings (no adjustments have been made, just in read mode). And i get heaps of soot on my tailgate, a bugger to clean.

Anyway i am wondering where the stock BOV is located, and also where the plumb back hoses/s are and go. I have an R33 GTS-T and that is very different in its setup.

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


  • Similar Content

  • Latest Posts

    • I’m not sure what happened I told them about sonic tunes free OTS tune and the next the I know .. I was booted..   To funny 
    • Yea - I mean I've seen my fuel pump which is decades old and uh, while I'm not saying this with real knowledge... but I sure get the ick at using anything in the fuel system that produced the state of that pump. Many years ago I went through multiple pumps (and strainers) before I dropped the tank to clean it out with extreme violence. I'm talking the car would do maybe 50km before coming to a halt, which resulted in me cleaning out the filter with some brake cleaner and going on my way. None of my stuff ever looked like what came out of your fuel tank. I don't think I'd be happy with it unless every single component was replaced (or at least checked/cleaned/confirmed to be clean here).
    • I'm not going to recommend an EBC pad. I don't like them. Just about anything else would suit me better. I've been using Intima pads for a while now.
    • Agreed, and in particular the earth strap that should go from the subframe to the chassis but it often broken or left off. There is a section in the R32 workshop manual you can follow for troubleshooting if you don't see anything suspicious, and depending where you are (there is no location on your user profile) you should be able to get your hands on a second hand replacement unit still if needed
    • Yeah they mention as a R34 for 2.5 Turbo...but then again thos "small" were also for R34 by that different site. But i look into it and that 310mm EBC is for R34 GTT. And by those you linked the specs are the same 🙂    EDIT: I found these on one site here: DBA 4000 series T3 DBA42304S They are 310mm...and it says are for R34GTT...are there good? EDIT2: ok they have pads too.  What "color" should i get for street use? I dont want/need some noisy ones...(and if they are not that dusty that is good too)
×
×
  • Create New...