Mitsubishi Colt Ralliart 400 Load Patch – AUDM JDM Rcolt Z27AG

May 25, 2022 // 0 Comments

400 Load Patch for Mitsubishi Colt Turbo – Why we need it The engine measures boost via a Mitsubishi concept of Ecuload, with a value between 0 – 200.  By default the Ecuload logging only goes up to 160, despite the ecu being able to see up to 200 ecuload.  How much boost is this? The following table is a rough guide (credit Merlin, Evo X tuning guide):   Boost vs EcuLoad So the Rcolt Ecu can only see up to 200 load (about 17-18 psi depending on mods).  This means any map in the rcolt ecu that goes past 200 load will not be used by the ecu, instead it will use the 200 load column (fuel, ignition, mivec etc).  As ecuload is also a measure of the amount of air the engine is receiving, it also means as you go over the 200 [...]

Colt Boost Tuning 101 – Reprint from Law’s DIY Blog

May 25, 2022 // 0 Comments

Mitsubishi Colt Ralliart and CZT Boost Tuning 101 A reprint from Law’s DIY Blog The following writeup was taken from a now deleted blog 'Laws DIY Adventures', detailing how to work with the reactive boost system on Mitsubishi Colt Ralliart and CZT models.  Law - if you come across this and mind my reprint please reach out. Have added to here so I don't lose it and I think it's a great help to many others. Here it is in it's unedited original form: Laws DIY Adventures Doing things the hard *fun* way Righteo, for the last few years I’ve been mainly covering minor suspension modifications but its finally time to start on increasing power output. First on the list is boost tuning, there’s a huge amount of information on this [...]

Ralliart Colt Z27AG Pops and Bangs

May 7, 2018 // 0 Comments

Merlin’s Guide to Tuning Evo’s talks about one way to get Pops and Bangs from your Mitsubishi Evolution. A while back I tried applying it to Turbo Colts, namely Australian delivered 2006 Ralliart Colts.  The method basically involves richening up the fuel and retarding the ignition in certain spots in the map.  When you lift off throttle, timing goes negative, and fuel is dumped in, so that we get lots of fuel getting ignited very late, and hopefully causing this to continue igniting outside of the engine. Sounds like a bad idea? It probably is, but it its a neat party trick. As with everything on this site, do it at your own risk!! Step 1 – Delay fuel cut For the above method to work you need to delay how long it is [...]

Colt Ralliart 2 Byte Load

May 13, 2016 // 0 Comments

If you have ever logged your ECU Load on a stock Ralliart Colt or Colt Version R, you might have noticed it peaks at 159.375.  According to Merlin’s EVO guides, it equates to somewhere between 11 & 15 psi: Boost vs EcuLoad For colts, I’ve found 160 load to equate to around 13-15psi.  But most of us are running higher? How can we reliably tune the car when ECU Load stops reporting load past 14psi? The answer is 2 byte load. Colt Ralliart 2 Byte Load Evoscan (and Tactrix SD card) logging can handle something called 2 byte load but to do that some changes are needed to your MUT table, and also your logging configuration. Before we get into that, some more background. ECU Load is only 1 byte load. To log it, only one MUT [...]

Ralliart Colt Fast Throttle Mod

May 13, 2016 // 0 Comments

A year ago I started racing my Ralliart Colt at a local hillclimb in the Barossa valley (www.collingrovehillclimb.com.au).  At the time my car was still running the stock exhaust and as a result delivered its power in a rather torquey, all or nothing kind of powerband low in the rev range.  It was very hard to control wheelspin on this narrow winding tarmac and it was very frustrating seeing my car perform well in the first two sections of the hillclimb, only to be a second slower in the last third of the course relative to other competitors.  It felt like the car had the heaviest flywheel ever, so heavy, that it was impossible to control wheelspin once boost set in.  No amount of throttle control seemed to help – it was either [...]

Graphing Knocksum with Evoscan

September 22, 2015 // 0 Comments

Reading the Tactrix SD card CSV logs in excel is doable, but sometimes you need a quick overview of how the run went, or perhaps you might want to send screenshot of the log’s knocksum to another enthusiast. The best way to do this that I’ve found is to graph knocksum with Evoscan. This is how you do it: 1. Buy Evoscan from here.  They’re a small company, so go on do the right thing and pay the small fee 2. Download & Install it 3. Load it. You should see the following screen. Click the Graph / Logs button: 4. This will load the graphing screen (below). Note you can also do live logging from this screen. Anyway, lets set it up to read your Tactrix CSV log. Set Data Values to Maximum Set Load to ECULoad.  If you [...]