Quote:
Originally Posted by Tor
Thank you. Yes, the car runs fantastic and it's now a lot of fun to put the foot down from already 3000 rpm. The Virtual Dyno curve depicted in the video is from the actual wide open throttle pull shown in the video. Bumps in the road will, of course, affect the result somewhat. I have, however, made several pulls that all show roughly the same results. I can't say (yet) how they will compare to actual real dyno graphs. I suspect they will look fairly similar, but will show a larger drop off above 7000 rpm, where I suspect the resolution of the logs is too low to provide accurate results. The torque dip is still slightly visible in the curves, but most importantly, not noticeable while driving.
As to "how" and "what":
I use a Tactrix Openport 2.0 OBD2 adapter to flash with their software EcuFlash 1.44. Editing of the tunes is done using RomRaider.
The base of the tune that I am using comes from the free OpenFlash Tablet tunes. They did actual dyno tuning of the FT86 in various configurations and made different tune available respectively. As an example for unequal length header on an otherwise stock car (same as what I have). Among a lot of things that they have tuned is the VVTI (or AVCS - active valve control system - as it's called in Subaru/FA20 terms).
These tunes have then further been refined by open source community. Most noticeably in the tunes by Wayno as you can read a lot about in this thread. These improvements add up to around 50 tables that have been changed with minor fine tuning or large adjustments. There are a lot of (further) adjustments to A/F, timing, and fuelling compared to the OpenFlash tunes.
The tune I run is one of Wayno's tunes with a fair bit more added timing, as we have high-quality fuel in my neck of the woods (100 octane RON or approx 95 US AKI). |
Hi Tor,
Thank you for your prompt and clear answer, really appreciated your help here. Thank you sir.
OK, I have used those hardware & programs back in my tuning days, though mine were much older version hehe. So, I am pretty familiar with what we are talking about. Actually, I used EcuEdit mainly for rom editing as it has quite a nicer interface and make the rom editing easier and clearer. It has "Microsoft Window" similar interface and it can show very nice 3D Graphs. IF your haven't seen it, check it out here.
http://www.epifansoft.com/ecuEdit-screenshots.html. It is very easy to "visualize" the curve/graphs and do the smoothing for A/F ratio and Ignition Timing 3D tables. Bad thing is it isn't free.
My further question:
Your car is EURO version while OpenFlash Tablet is kinda focus more for the U.S. version of GT86 as it is a US based company. So, is your ECU compatible with those of US cars? Do they have free "Off The Shelf" map for the EURO Calibration ID? Or are they all the same US and EURO ECUs? Back in my WRX days, US and UK ECU (mine) are so far different that it is almost useless to use US map as a base map!
And Did you have the guy "Wayno" help you with the tuning? Like sending ECU data logging files to him and let him edit the rom for you. Or Did you just follow his guideline and tune your ECU by yourself?
Thanks again for your kind support.