Jump to content
SAU Community

4 Wheel Dyno Kw And Rear Wheel Dyno Kw

PhilGTR

By PhilGTR,
in Engines & Forced Induction

 Share

Recommended Posts

PhilGTR Rising Star

PhilGTR

Posted
Posted

Hey guys

I got my car dynoed again today and I just want to try and clarify the difference between rwkw's and 4wkw's on GTR's.

The last time I got it done on a rwd dyno and it came up as 253rwkw at UAS.

Today I have the same mods as last time but just adjusted the boost response i made 257kw @ all 4 wheels at CRD.

Now Jim at CRD said to me the difference between rwd and 4wd is around 30kw give or take and that sounds a bit too much to me. When i tested my car today, it felt like maybe at max an extra 10-15kw at the wheels difference(but thats just my judgement). I also read somewhere here people were saying around 4% difference between 4wd and rwd for r32gtr's.

Also last time my stock injector duty cycle at full power were at around 80-82%.

Now Jim reckons I wont be able to make anymore power safely because of my injectors maxing out which I assume would at least be 90% plus? But need to confirm this later.

Stock injectors max out at around 280rwkws or so?? So does this make sense to assume its around a 4-5% loss between rwd and 4wd? Opinions wanted please!

Cheers

Leewah Veteran

Leewah

Posted
Posted

I had my car dynoed at Melbourne Autosalon in both RWD and AWD within a span of 24 hours of each other and no changes were made to either the dyno or the car except for the removal of the driveshaft.

In AWD, my car made 604awkw and in RWD, the car made 617rwkw.

Regardless of how the dyno was configured intially, all the settings for both the dyno and the car remained the same. The only thing which changed was the ambient temperature and humidity in the Melbourne Exhibition Building which would be considered as negligable.

Hope this info helps.

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

    • Dose Pipe Sutututu
      Dose's Sometimes DIY and Pay Someone Home & Boat Improvement Thread

      By Dose Pipe Sutututu · Posted

      Wife wanted basket things in the wardrobe in our temporary house. Thought about ripping our the wardrobe and fitting the entire IKEA set, but it's a temporary house and we want to move in a few years. So IKEA advertises this as a 50cm unit, however the actually basket and rails measure 46cm wide. Only issue was depth, IKEA stuff is quite deep, where as the builder special junk is super shallow at less than 40cm. Send it, chopped the rails, then offset the mounting holes, job done, happy wife, less shit scattered all over the bedroom. Did the same to the other side too. Also drove the Skyline shit box today, dropped off oil at Supercheap Auto. I didn't realise they only now take max 2x bottles per visit. I visited 2x Supercheap Autos.  
    • Kinkstaah
      Strange issue RB25DET wont start

      By Kinkstaah · Posted

      I've seen similar actually in my situation. You never know what tables are attempted to be used when the car thinks it's -99C or +200C. The fail state is not usually that extreme but you know what I mean - it was in my case though! This is where being able to read all the sensors is useful cause you see this stuff really quickly.
    • Kinkstaah
      First time Skyline owner

      By Kinkstaah · Posted

      The above is very important. However as long as you keep timing relatively low, it's plausible to make your own knock ears and plausible to learn to tune with a modern ECU that can do wideband O2 correction like a boost controller. I mean if you only have one viable road to even drive the car on, learning to tinker to this level may be worth doing given you can't do much else with the car...?
    • Kinkstaah
      Chris' Toyota Mark ii JZX110

      By Kinkstaah · Posted

      I find the fact that the rear plate has to be bent inwards at the rear not so bad: but the front is just awful: It's like come on. (these are my very old, now retired/turned in plates) TBH it is a lot of money to fix a minor issue, the fact I said "I'll never really spend the money on doing this" is why people ended up buying them as a gift for a 'car guy' who can be hard to shop for.. for car guy things.
    • GTSBoy
      Chris' Toyota Mark ii JZX110

      By GTSBoy · Posted

      I just bent the ends of my premo plates. It even went through Regency like that after the engine conversion and the inspector (a great bloke!) just squinted his eyes and said "I didn't see that". Plates, and how they look, are just something that have zero importance to me.
×
×
  • Create New...