Articles by andy

Colt Ralliart CVT

CVT Torque Protection Override Z27A Colt Ralliart

February 18, 2023 // 0 Comments

Another quick post – this time on how to disable the Mitsubishi Colt Ralliart CVT torque limiting behavior holding back your fun.  Not sure if you’re hitting the CVT torque protection? Log your throttle and if it’s never hitting low numbers in the 16-20 range, then chances are you’re in a limp mode. ECU has a half throttle limp mode, and then a 1/4 throttle limp mode when its really upset.  Warning – these torque limits are there for a reason – to protect your CVT from damage.   If removing them, consider trans cooler and more regular gearbox fluid changes to try and minimise the extra risk you’re taking on. OK For ECU ID 39780007 Add the following to your XML:   [...]
2 Byte load address Colt ralliart

Locating MUT addresses in dissasembled Colt Ralliart code

February 10, 2023 // 0 Comments

This is really short post on how to translate a MUT memory address into something you can locate in the dissasembled code. In windows calculator, switch to programmer mode. Then to Hex. Enter in 808000 then minus the MUT address (eg 804e90) your interested in. Eg: 808000-804e90 = 3170 In your dissassembly program search for Immediate Value (in IDA pro for example its the binoculars icon with the blue #).  Enter in 0xvalue – in above example 0x3170. This will locate all examples of where this memory location was read or set. If you’re wanting to log a memory address you can see in the code, but not in the MUT table, its the reverse: Lets say its something like this (2 byte load memory address for CVT rcolt): Locating 2b byte [...]
ecuload stock turbo

AUDM Z27A Mitsubishi Colt Ralliart Updated XML including 400 load patch

January 9, 2023 // 0 Comments

AUDM Z27A Mitsubishi Colt Ralliart Updated XML inc. 400 load patch A while back i wrote up about tuning with the 400 load patch here and here.  I didnt however release the XML for Australian delivered Ralliart Colts – primarily because I wanted to tidy up the XML.  Recently I’ve come to realise I probably won’t get to tidying up the XML like I had planned due to life, family, work etc so instead, here it is. DOWNLOAD HERE Huge thank you to Antti for writing the orginal 400 load patch for JDM Z27AG’s. I based the 400 load patch for AUDM on his work.    Also thanks to the early rcolt XML developers – Matt and Merlin. This updated XML should be used in place of the original Rcolt.com XML (either [...]
ecuload stock turbo

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 [...]
Laws DIY Adventures

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 with Wilwood Calipers and Hawk discs

Colt Ralliart Big Brake Upgrade Wilwood

January 4, 2021 // 1 Comment

Finally got around to installing my big brake kit for my Mitsubishi Ralliart Colt, so I thought it was time for another post. In the last year or two since posting, I’ve changed rcolts to an extra minty white one, with painted flares.  I’ll do an extended post on this new ride sometime soon, and talk through its mods. For now though, I’ll focus just on the recent BBK brake upgrade.  The install was a bit of a pain, but got there in the end. Specs Wilwood superlite calipers (4pot), Hawk discs (309mm 32mm thick 2 piece fixed) MRP hats, brackets & braided lines Circo M119 Road Rally competition [...]
Ralliart Colt Pops and Bangs

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 [...]
Quick & Dirty Ralliart Colt Mod Guide

Quick & Dirty Ralliart Colt Mod Guide

August 25, 2017 // 0 Comments

Just got a Ralliart Colt? Or finally getting round to giving it some aftermarket love? This is a Quick & Dirty Ralliart Colt Mod Guide to help you work out plan of attack. This is just a rough guide, don’t take my estimates that seriously just vague ball parks. All kW figures are at front wheels on roller dyno. Stage 0 ~90-95kW Stage 0.5 95-100kW K&N Panel Filter Boost Pill out Tune Stage 1 110-124kW (depending on boost/risk profile) K&N Panel Filter 3 port boost solenoid (grimspeed evo X unit is easiest) Evo MR Metal Bov Fuel Pump (walbro 255 or similar) [...]
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