Jump to content
SAU Community

Knock Sensor

geno8r

By geno8r,
in Engines & Forced Induction

 Share

Recommended Posts

geno8r Grand Master

geno8r

Posted
Posted

Hi

I have a SAFCII which has been dyno tuned on my car & runs a dream but i dont think i have a knock sensor connected up to it because the reading from the display is always 0.....

I have no idea what they look like or where they're connected, all i know I'd like one & i'll get my mechanic to install it for me.

So yeh, where can i buy a knock sensor to connect up to my SAFC?

Thanks, :(

Link to comment
https://www.sau.com.au/forums/topic/61249-knock-sensor/
Share on other sites
C_DawG Rising Star

C_DawG

Posted
Posted
Hi

I have a SAFCII which has been dyno tuned on my car & runs a dream but i dont think i have a knock sensor connected up to it because the reading from the display is always 0.....

I have no idea what they look like or where they're connected, all i know I'd like one & i'll get my mechanic to install it for me.

So yeh, where can i buy a knock sensor to connect up to my SAFC?

Thanks, :rofl:

Your engine will have a knock sensor built in, two infact I think. No idea of the SAFC connects to these or whatever, never used one.

Link to comment
https://www.sau.com.au/forums/topic/61249-knock-sensor/#findComment-1157767
Share on other sites
geno8r Grand Master

geno8r

Posted
  • Author
Posted

I'll ring up the place which dyno tuned my SAFCII & ask them if they can connect it. I remember the guy saying when he dyno tuned my car on Optimax fuel that it was detonating slightly @ 12psi, he said you wouldnt know it but i did because of the knock reading I had. He would have been using his equipment to monitor the knocking.

Link to comment
https://www.sau.com.au/forums/topic/61249-knock-sensor/#findComment-1158300
Share on other sites
geno8r Grand Master

geno8r

Posted
  • Author
Posted

Well i solved my own problem today.

I downloaded the SAFCII manual off the Apexi site today & went into the Sensor Check on the controller. Yay... i do have a working knock meter, it was displaying raw data. The next was to set it. So i went into the Set Knock & held the rpm at 1500 to get 115 then 3500 rpm to get 117. These were done in neutral as your're meant to & is the raw figures.

Sweet so the knock display now reads around 8 - 11 when ideling @ 700 - 800 rpm. But once i start moving & get above around1500 rpm the knock reading goes to 0. I thought it would still show something higher than 0 so I wound the boost to 12psi & gave it some for a few minutes. I still got nothing, was always displaying 0. The air outside was cool too as for its the end of the day & its been raining.

Im just wondering what figures do other people with SAFCIIs get?

I did the Set Knock feature twice, when i first did it the raw figures were more like 95 - 98. 5 minutes later after mucking around revving it in idle setting the knock the figures went up to 110 - 120.

All of these setting were done after the car already being driven for 30 minutes.

I dont know if 0 is just really good or what’s the deal? I have had the SAFCII dyno tuned & I run 12:1 A/F Ratio's. I might try the Set Knock again on a warmer day with a more average outside temperature.

Any one with experience setting their knock & their display figures would be much appreciated.

Thanks, :cheeers:

Link to comment
https://www.sau.com.au/forums/topic/61249-knock-sensor/#findComment-1164249
Share on other sites
strutto Grand Master

strutto

Posted
Posted

That sounds perfectly normal to me mate... Mine does the exact same thing... If / when it pings, you will get a reading of around 80+ for the duration of the pinging...

A reading of 0 whilst accelerating is fine and to be expected with the SAFCII...

You may find your idle knock reading will go as high as 30 when the car has been driven for more than a few hours during the day... This too is normal...

Link to comment
https://www.sau.com.au/forums/topic/61249-knock-sensor/#findComment-1164274
Share on other sites
geno8r Grand Master

geno8r

Posted
  • Author
Posted

Owww sweet sounds good then. Yeh it will be good to know if my engine is detonating now so i can look after it. I was thinking of getting an Air/Fuel ratio gauge too.

Also, have you played around with the Warning setting in the SAFCII, supposedly you can get the SAFCII to notify you or react somehow when a parameter you set is exceeded *eg too high knock figure*. I'll have to have a good read of the manual again.

Link to comment
https://www.sau.com.au/forums/topic/61249-knock-sensor/#findComment-1164311
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

    • 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.
    • GTSBoy
      Ethanol Content Sensor - Always at 11%?

      By GTSBoy · Posted

      The hydrocarbon component of E10 can be shittier, and is in fact, shittier, than that used in normal 91RON fuel. That's because the octane boost provided by the ethanol allows them to use stuff that doesn't make the grade without the help. The 1c/L saving typically available on E10 is going to be massively overridden by the increased consumption caused by the ethanol and the crappier HC (ie the HCs will be less dense, meaning that there will definitely be less energy per unit volume than for more dense HCs). That is one of the reasons why P98 will return better fuel consumption than 91 does, even with the ignition timing completely fixed. There is more energy per unit volume because the HCs used in 98 are higher density than in the lawnmower fuel.
    • GTSBoy
      Blue slip

      By GTSBoy · Posted

      No, I'd suggest that that is the checklist for pneumatic/hydraulic adjustable systems. I would say, based on my years of reading and complying with Australian Standards and similar regulations, that the narrow interpretation of Clause 3.2 b would be the preferred/expected/intended one, by the author, and those using the standard. Wishful thinking need not apply.
×
×
  • Create New...