Articles by andy

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 [...]

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 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

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) [...]

DRIVETRIBE Colt Groups

December 1, 2016 // 0 Comments

The ex-TopGear guys have launched a social network for car enthusiasts. I think it looks pretty good on initial impressions. I’ve set up a group for turbocolt.com on Drivetribe here https://www.drivetribe.com/t/SN-lTIwrTpmEt8EG4IJE-g/S4hh4CEjSsKsdfTkwdgWuw You can use it to follow updates on here, and to get other not blog post worthy updates and photos.  I don’t intend on it being as large asthe other Colt groups but who knows, it might take off more than expected. So what are the other larger Colt groups on DriveTribe? Check out these ones: Colt Status (run by Rcolt.com Facebook team) link here TurboColtUK (run by TurbColtUK Facebook team) link here Ralliart Colt Adelaide (run by me for the local scene in Adelaide, South [...]

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 [...]
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