Jump to content
SAU Community

Safc 2 Knock Sensor

stenve

By stenve,
in Engines & Forced Induction

 Share

Recommended Posts

stenve Proficient

stenve

Posted
Posted

I have an rb25det series 1. finished hooking up the safc2 and all is working fine.

i have one query about the knock sensors though.

there are 2 knock sensor wires on the ecu one for cyl 1-3 and one for 5-6?? is this right?

to my knowledge there is only 1 knock sensor wire on the safc, do i need to tap into both of these wires? or is there a second knock wire from the safc2?

i have the knock sensor wire from safc tapped into one of the ecu knock sensors atm, but do not get any knock readings on the safc.

i assumed there would be a small amount of knock or is it because ive hooked it up wrong.

can someone please help me out with this and clear it up??

Thankyou

Link to comment
https://www.sau.com.au/forums/topic/215240-safc-2-knock-sensor/
Share on other sites
stenve Proficient

stenve

Posted
  • Author
Posted
APEXI DOCUMENTATION

Includes: Installation Manuals, Wiring Manuals, Technical FAQs

http://www.apexi-usa.com/support_main.asp

thanks zennon i have that printed out at home, but found it pretty much all over the shop and confusing. ill try and have a read through it again.

but from what i can see there is 1 wire from the safc for knock and it needs to be tapped into both knock wires on the ecu.

stenve Proficient

stenve

Posted
  • Author
Posted

yeah as a whole its fairly easy, was just this knock sensor thing im a little unsure of.

just make sure all your connections are sweet. the splitters i used werent the best for the job and made a dodgy connection. caused me a bit of trouble.

QWK32 Veteran

QWK32

Posted
Posted

nah the safc doesn't have two knock wires, just one. you need to get a multimeter and probe into both of the knock sensor wires at the ecu when the car is running. the one that has the higher voltage is the one you splice into.

stenve Proficient

stenve

Posted
  • Author
Posted
2nd one in the thread - you're on a roll! :banana:

haha i didnt even notice the other one. slow day at work today... my brains not working

awesome thanks qwk32 :) i'll check that out.

should an untuned rb25det be getting a small amount of knock? it shouldnt always be at zero should it? i may have read that wrong somewhere though

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

    • bilbo117
      R34 GTR Seats / No longer reclining

      By bilbo117 · Posted

      Hi all, Long time since I've posted here. Looking for some advice on what I can remove to further identify the cause of my issues.  I can move the passenger seat forward and back but the knob used to adjust the seat angle is pretty much free spinning, there's very little resistance.  Removing the side cover I can see that the chain is intact but the shaft for the adjustment spins without the gear attached to it moving.  What's my next step for disassembly here? Is this a common fault? Just being a little cautious as I didn't want to start removing bolts for a spring to fly out or something equally as stupid.  Cheers
    • Dose Pipe Sutututu
      Ethanol Content Sensor - Always at 11%?

      By Dose Pipe Sutututu · Posted

      Those above shitboxes, mediocre and above usually have a turbo strapped to them, hence the slightly higher octane is required.  
    • sinn3r
      R34 Skyline climate control unit transistor

      By sinn3r · Posted

      Hi all,   long time listener, first time caller   i was wondering if anyone can help me identify a transistor on the climate control unit board that decided to fry itself   I've circled it in the attached photo   any help would be appreciated
    • Kinkstaah
      Blue slip

      By Kinkstaah · Posted

      I mean, I got two VASS engineers to refuse to cert my own coilovers stating those very laws. Appendix B makes it pretty clear what it considers 'Variable Suspension' to be. In my lived experience they can't certify something that isn't actually in the list as something that requires certification. In the VASS engineering checklist they have to complete (LS3/NCOP11) and sign on there is nothing there. All the references inside NCOP11 state that if it's variable by the driver that height needs to maintain 100mm while the car is in motion. It states the car is lowered lowering blocks and other types of things are acceptable. Dialling out a shock is about as 'user adjustable' as changing any other suspension component lol. I wanted to have it signed off to dissuade HWP and RWC testers to state the suspension is legal to avoid having this discussion with them. The real problem is that Police and RWC/Pink/Blue slip people will say it needs engineering, and the engineers will state it doesn't need engineering. It is hugely irritating when aforementioned people get all "i know the rules mate feck off" when they don't, and the actual engineers are pleasant as all hell and do know the rules. Cars failing RWC for things that aren't listed in the RWC requirements is another thing here entirely!
    • GTSBoy
      Best place to order Authetic R32 Parts in Japan

      By GTSBoy · Posted

      I don't. I mean, mine's not a GTR, but it is a 32 with a lot of GTR stuff on it. But regardless, I typically buy from local suppliers. Getting stuff from Japan is seldom worth the pain. Buying from RHDJapan usually ends up in the final total of your basket being about double what you thought it would be, after all the bullshit fees and such are added on.
×
×
  • Create New...