Jump to content
SAU Community

Power Fc Problem

Jetdat

By Jetdat,
in Engines & Forced Induction

 Share

Recommended Posts

Jetdat Veteran

Jetdat

Posted
Posted

I have 2 months ago had PFC installed and tuned..quite happy with it but recently i discovered with the air con on there is a huge flat spot(just like rev limiter, engine cuts out) under light to moderate loads, intermittently(i.e happens 50% of the time) at around mid-range revs

i spoke to my my tuner and he has never heard of this before, and when he took it for a drive it didnt happen unfortunately.. :(

Anyone had similiar problems after PFC install?? or may have an idea what may be causing it?? Could the PFC be faulty?

Cheers

Link to comment
https://www.sau.com.au/forums/topic/97857-power-fc-problem/
Share on other sites
paulr33 Grand Master

paulr33

Posted
Posted

you could do a datalogit run when the aircon is running to see what happens when the aircon relay turns on (its logged) and then try and work out what changes, could be the voltage dropping or somehow the timing could be altered as there is more "pull" on the drivebelt from the compressor.

i can datalog for you if you want

Link to comment
https://www.sau.com.au/forums/topic/97857-power-fc-problem/#findComment-1776876
Share on other sites
paulr33 Grand Master

paulr33

Posted
Posted

next saturday is fine. i can also save your tune to a file in case you reset your powerfc or loose the tune etc. it wont fix the problem but will give u some more info as to what might be a possible cause etc

Link to comment
https://www.sau.com.au/forums/topic/97857-power-fc-problem/#findComment-1778834
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

    • Waders360
      M35 Brake caliper replacement

      By Waders360 · Posted

      Hi from Canada, Both of my calipers are starting to fail. My car is a 2005 M35 Stagea ARX and I can't seem to find any parts or any cross reference caliper that would fit my car. Is there a company or a similar caliper that would fit and I could replace the OEM one. Or if anyone knows where I can find a new OEM. Any help is very appreciated. Let me know!
    • 25zenki
      S1 rb25/s14 starting problem

      By 25zenki · Posted

      Maf is a question mark but TPS  I have set at 0.47, the fact that I’m getting proper voltage range out of it with the key on leads me to believe it’s functioning properly. I’m getting proper voltages on basically everything. I still need to look up voltage ranges for z32 maf and test that 
    • 25zenki
      S1 rb25/s14 starting problem

      By 25zenki · Posted

      Honestly no not at all, but it’s a very basic tune, it’s stock injectors q45 tps and z32 maf. Other than that it’s a completely stock base map. The file is from nistune and from my understanding if it was tune related I would be able to unplug maf and tps and it would still start even if it was a really shitty start. I have tried starting it with coolant temp, maf, and tps unplugged none of those 3 togethor or individually changes anything 
    • Matt Z
      SAU NSW - Bathurst Run 2025

      By Matt Z · Posted

      🏆 Skyline Supremacy Meets Mount Panorama Magic 🏆 Join SAU NSW as we take the long way to Bathurst, the home of GTR greatness. Saturday 30th August 2025 7:00AM Meeting Hanna Park North Richmond 7:30AM Departure Cruise Via Bells of Line Road 9:00AM Arrival to Stop 1: Golden Poplars Meadow Flat 9:45AM Arrival to Final Destination: Mount Panorama Motor Racing Circuit Meet Location: Hanna Park North Richmond Stop 1: Golden Poplars Meadow Flat Final Destination: Mount Panorama Motor Racing Circuit   *Disclaimer* There will be a lead and follow car so no one should get lost. If you would like to attend or bring others along please put your name down and a +1 as numbers will be needed prior! This is NOT a race and we will all be adhering to all road rules. If this is what you want please come to one of our many track days. This is an official SAU:NSW event and will be run under a CAMS permit. One of the things that really sets our club apart is our commitment to being true enthusiasts. When on normal roads we strive to maintain good relations with the authorities as well as the public in general. When attending one of Skylines Australia NSW events please try to: • Be aware of surrounding environment and act accordingly. • Drive courteously on the state’s roads as a true enthusiast should. • Understand how important it is to maintain the good name of SAU NSW and thus, treat others accordingly. • Any misbehavior will not be tolerated and you will be asked to leave.
    • soviet_merlin
      My BMW E39 528i touring

      By soviet_merlin · Posted

      What does it look like with highway driving? And yes, I had a similar thought as Duncan. It looks quite similar in my Stagea and I have made myself accept it as normal. Might have to look into it some day   Highway gets as low as 10l/100km on my end so I'm not as worried about it being a mechanical issue. More likely just the tune on the haltech.
×
×
  • Create New...