Recoil

just curious. it's kinda pointless on these trucks because the mileage is so bad anyway, but it's cheap & i need a new weekend project. that and i got a fat empty spot above my stereo

for those who haven't heard of it, it's a little calculator for your mpg, it does instantaneous/trip/average/etc. hooks up to the vss, one injector lead, +/-, pretty basic stuff.

i'll keep this thread updated as i get everything hooked up if anyone else is interested.

just a 22re

any links or pictures sounds good man i might wanna get one too

Recoil

http://ecomodder.com/forum/showthrea...pace-2115.html

requires a bunch of soldering, you can get a premade board or one you have to solder all the components on yourself, i was going to do the latter but put one of the resistors in the wrong spot and f'd the board removing it

new prebuilt one just came in yesterday, so hopefully by the end of the week i'll get the rest of the stuff put together and have it in.

just a 22re

wow how much was it i tried to look for it but got confused at what i was looking at lol

so all you cut into is the injector speed and thats it other then power and ground? wow im so confused lol

Recoil

yeah, you tap vss and an injector and using that it calculates your mpg. only need 4 connections to the car. the rest is just putting the damn thing together and tweaking the code to suit your vehicle.

got bored so i'm soldering stuff together right now board-wise, you've gotta put a couple resistors and diodes and crap in line w/ the connections and wire up the lcd to the circuit board.

did the grounds and buttons, will do the lcd tonight probably, then need to do the vehicle power and last couple diodes/resistors & tap the vss/injector. just gotta put together a mount out of plywood the size of my extra DIN above the stereo... then finally start tweaking the code.

soldering is a bastard.

4runner4days

This is a bit of a timelapse here, but @Recoil , do you have any good links for wiring instructions for one of these MPGuinos? I just bought two (very hard to find these days since basically all cars come with fuel info computers) and I'd love to wire one up to my 3VZE. Unfortunately I didn't pay very good attention when we played with Arduinos in computer science class in high school and that was 8 years ago. If anyone's got some advise it would be greatly appreciated

scope103

You don't need to know anything about Arduino's to hook up an MGPuino. As Recoil said, you only need to hook up four wires (B+, gnd, VSS1, and Inj).
If you don't care about super-high reliability, you can use plain-ole' solid conductor telephone wire. Back-probe the connector, then hold it in place with hot-melt glue.

You'll need to verify your ECM connections, but for me B+ B-G A1, gnd BR C11, VSS1 Gr A9, and Injector W-R C12

Wanting something less embarrassing, I eventually connected to the ECM a little more permanently. I depinned the connectors I wanted, carefully striped off about 1/4" of insulation, attached my MPGuino lead to the bare wire with a barrel crimp, covered it with heat shrink, then put the pin back into the connector. That's what I have now.