Jump to content
SAU Community

Recommended Posts

Hi guys,

i've been told that my GTR is running retarded, my Pwr FC says my idle timing is 20degrees,

That's ADVANCED. And just because the PFC says it's 20 doesn't mean it's running at 20. It all depends on when the PFC gets the trigger to start its calculation as to the correct moment to fire the spark.
Whats is the proper IDLE timing for a r32 GTR?
SEARCH. The question gets asked every other week
Does anyone know how to adjust idle timing on a PFC?

cheers!

RTFM? You can really only set the timing with a timing light on the crank pulley
That's ADVANCED. And just because the PFC says it's 20 doesn't mean it's running at 20. It all depends on when the PFC gets the trigger to start its calculation as to the correct moment to fire the spark.

okay so the standard gtr idle timing is less than 20 degrees..Gotcha, I also take it you're saying its like my computer isnt in synch with the engine? I was told that the timing on my crank is 4 degree's retarded. I posted what my power FC outputted because i was told by the workshop who installed and dynotuned my PFC that it was properly synchronized with my engine.

SEARCH. The question gets asked every other week

I appreciate the comment and understand where you are coming from, but I have searched and have not found anything specific enough to be my answer.

RTFM? You can really only set the timing with a timing light on the crank pulley

now now, no need to be impolite.. if i knew that i wouldnt be asking the question. I was told by reputable tuner that the PFC should have more than enough advancement to correct timing problems similiar to mine, but i'd have to pay for another retune for him to go further than that.. a different workshop originally tuned my PFC. My CAS is currently wound up full, but my engine is not pinging at all.. and apparently i'm still running retarded on the crank. the workshop that tuned the pfc says all is good, the other workshop says its off. Before spending another 500, I thought i'd try to find out more to see if i can test it myself.

my question again is in the power FC hand controller, what values do you change to increase the 20Deg to a higher figure.

base timing should be 20degree before top dead centre (ie, 20 degrees advance). this needs to be set at the CAS. you basically use a timing light to read the timing, then rotate the CAS position until it's right. any average workshop should be able to check and set it for you.

... what values do you change to increase the 20Deg to a higher figure.
If anything, you need to be adjusting some "offset" parameter so that the PFC handset agrees with the timing light.

RTFM. Or don't PFCs come with a manual?

If anything, you need to be adjusting some "offset" parameter so that the PFC handset agrees with the timing light.

RTFM. Or don't PFCs come with a manual?

TFM is in japanese mate.. Found some english Apexi manuals on the web, but the information is limited to "how to plug in" the PFC. The Handcontroller manual was a bit more helpful, showing how the navigate the menu's. However the manual is catered for tuning pro's, no real explanations what each item is, just how to change it.

you're right there is an "offset" parameter, but from what i was able to piece out though it seems both trailing and leading ign would have to be adjusted. I was hoping there would be a single parameter that handles both, but doubtful now.

Thanks to everyone who replied, really appreciate the time and effort.

please close thread.

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

    • You'lll likely have to make do with R33 GTR for engine/tranny stuff, and Stagea for the body. I don't know that there's even been an actual diagram seen in the wild.
    • Haha, i kow right? Could have bought so many cars for the same amount of money (or less) but driving Unicorn gives you at least +1mln to style 😅. Like wise man said "life's to short to drink cheap wine and drive boring cars" 😉
    • Newbie here, proud owner of an Autech 260RS. I'm on the hunt for wiring diagrams specific to the 260RS, particularly S1. I've ran my eyes through R33, R34 Diagrams, there are some similarities, however continue to find incorrect wire colours and pins on connectors in the 33,34 diagrams.   I was hoping someone could point me in the right direction? I'd be happy to pay for the originals in Japanese. I can translate them, at least they would be accurate.   Any help please would be greatly appreciated, never heard an RB26DETT before let alone driven one, and I've got a spaghetti monster of goodness to sort out.   Cheers Benny  
    • Hey all  im wondering if you can help me please I have put a rb20 box in my r34 gtt as my auto packed up and a friend had a spare box I know it’s not ideal but it will get me up and running for now. we have done the conversation and everything is working great but my Speedo we got a s13 speed sensor but my Speedo reads double now and I bought a speed converter but still not having any luck.  so I thought I’ll reach out and pick your brains  any help would be appreciated please as I wanna drive my car again 
    • Drain it. I got official Matic D but you can get whatever is listed as Matic D compatible.
×
×
  • Create New...