In this FAQ I am attempting to cover everything required to assemble, install, configure, tune and enjoy a megasquirt based ECU into your EP82/EP91. Included will be Starlet specific assembly instructions, pinouts required for making your own plug in adapter to the stock wiring loom, Configuration of all the MS2 + Extra features such as fueling, ignition, boost control, nitrous control, launch control and flat shifting and will also be covering how to use additional outputs for things like using an ACIS manifold from a 5E-FHE. Hoping to also find the time to write up a slightly more starlet orientated tuning guide to encourage more people to learn and attempt to tune their cars themselves, safely. You can help by asking questions! If you have anything you would like to see included then feel free to post it up. Megasquirt FAQ This write up is eventually intended to be a comprehensive DIY and FAQ document covering every aspect of using a Megasquirt based ECU (be it a preassembled product or a home built kit) on a 4e or 5e engine in the EP series Toyota’s. What is Megasquirt? Megasquirt is electronic fuel injection controller developed orginally as an educational exercise. It has since been developed and expanded by many individuals to become a very reliable ECU with an affordable price point and a comprehensive feature-set. It has been used on cars of virtually every marque and an enormous variety of engines. What do I need to use Megasquirt in my Starlet? Most relevant to our use in Starlets are the Megasquirt-II based DIY kits and the microsquirt based DIYPNP. The MS-II kit comes as a bare circuit board along with all the individual components required for assembly. A finished unit will take somewhere between 4 and 10 hours to complete depending on familiarity and apptitude with basic soldering and electronics. DIYPNP is a kit, but a far less complex one! The general premise is a pre-assembled microsquirt based ECU with a separate daughterboard equipped with a variety of plugs for use with stock wiring looms. The DIY aspect comes with connecting the two. You must wire the MS board to the daughterboard to suit the car the ECU is going into. These two products have virtually identical features and both run the same software and are tuned in the same manner, but they are aimed and priced for a different target market. If you’re interested in learning how EFI works and have any experience working with electronics the perhaps the MS2 kit is for you. If you’d rather skip to the tuning and results phase then the DIYPNP kit is a great option. How do they cost? My vendor of choice is DIYAutoTune.com, they carry a large variety of Megasquirt related products. DIYPNP - $460 USD MS-II Kit - $247 USD Along with the MS-II kit you will need the Zeal Dual VR Conditioner daughterboard to use the stock distributor sensors - $35 18" Wiring loom - $48 They ship world wide and I have had nothing but excellent experiences with their service, even to the other side of the planet Much more coming soon!