Jump to content
SAU Community

Dyno Tuning?...

Anquetil

By Anquetil,
in General Automotive Discussion

 Share

Recommended Posts

Anquetil Mentor

Anquetil

Posted
Posted

Just wanted to know what sort of tuning can actually be done to say a RB25DET when you only have the stock ECU?

When I first started reading these forums I was under the impression (and i'm sure others still are) that the the factory ECU could be retuned by anyone :P

But I soon realised that it can only be done if you have a remapped/rechipped ECU or you have a PowerFC etc...

My bosses brother owns an Ultra-Tune outlet, so I can possibly get a significant discount or even free dyno time.

I know what some are saying "Ewww! Not UT!" But hes no spring chicken when it comes to Jap Imports having tweaked his own RX7 and his brothers S14.

So, allot of people mention getting their cars tuned but what is actually tweaked when you have a stock ECU... A/F ratio's, timing?

Link to comment
https://www.sau.com.au/forums/topic/25276-dyno-tuning/
Share on other sites
predator Grand Master

predator

Posted
Posted

Timing, idle speed, that is about it as far as I know... the ECU adjusts most things internally to keep everything running smoothly. Like most modern cars, its pretty much self-tuning. But while jap cars are pretty flexible in adapting to a few modifications (such as a bit more boost, greater air intake, better exhaust), once you go beyond this basic 20% or so, you're starting to go beyond what the original ECU was designed to adapt for.

Most people run some sort of aftermarket fuel management (such an S-AFC, or like you say, a full aftermarket ECU) to be able to really tune the car to its full potential.

Don't think the dyno will be that useful until you really start getting into that side of things.

Link to comment
https://www.sau.com.au/forums/topic/25276-dyno-tuning/#findComment-538955
Share on other sites
JimX Grand Master

JimX

Posted
Posted

A second hand S-AFC is probably the best bang for buck tuning tool you have available for an R33. It should cost around $350 (I just sold mine for that, heh) plus $150 for tuning, and you will have an easy 20 extra rwkw, not to mention smoother running and better fuel economy.

Link to comment
https://www.sau.com.au/forums/topic/25276-dyno-tuning/#findComment-539099
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

    • Marek
      Hi everyone.

      By Marek · Posted

      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" 😉
    • ARB26
      S1 Autech 260RS Wiring Diagrams

      By ARB26 · Posted

      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  
    • DanMac34
      R34 Speedo not working after manual swap

      By DanMac34 · Posted

      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 
    • joshuaho96
      Speed Sensor replacement

      By joshuaho96 · Posted

      Drain it. I got official Matic D but you can get whatever is listed as Matic D compatible.
    • QB6SAGR
      Tein Circuit Master- rebuild worth it?

      By QB6SAGR · Posted

      Thanks guys,  Yeah I should at least have them dynoed, at least then I know what I've got as a starting point.  The springs on these are hard as rocks. I vaguely remember Russman saying he was going to sell the shocks to me with the rocks fitted, as he was keeping the softer springs for his new setup.  I didn't click at the time but of course that was to let me know the shock/spring wouldn't be matched.  I also remember pricing up new springs around 2014-15, but, house, money etc. it never happened. So that was another reason to have them rebuilt. I have rebuilt the forks on many motorcycles so I think I could handle the seals on these easily enough, but getting the valving right would be a rabbit hole I cbf exploring.  Duncan, interesting to hear RP was tuning these back then. I might give them a call.  In the mean time I have been busy fitting sway bars. The Whiteline rear sway bar I purchased 15 years ago finally got fitted, along with the Whiteline front bar that showed up last week. Just waiting on new links for the front sway bar to finish that off.  And my spare set of advan AVS VS5's should be back from the powder coaters in a Pearl White finish sometime this week, with a set of Hankook RS4's lined up for fitting.  And then I just have all the suspension bushes to do. A comprehensive kit is on the way... Lots to do before the Ararat hill climb. Cheers guys 🍻   
×
×
  • Create New...