1. What is MegaSquirt?

MS is a full standalone fuel and spark controller. MS can completely replace your stock PCM, however you will need additional relays and wiring etc. to power all of your accessories. For this reason most people used the stock PCM to power all the accessories and sensors, while MS takes over engine control.

2. Where can I get one?

A list of all current vendors can be found here: http://www.megamanual.com/v22manual/mintro.htm#group. You can buy the MS unit prebuilt, or get an unassembled kit and do it yourself. It is not hard to assemble the MS, even if you have not had much experience with electronics. If you are patient, not afraid to learn, and willing to do a little (or a lot ) research, then you have what it takes to build and install a MegaSquirt system.

3. Ok great. Where do I start?

First things first. Read the FAQ on MSefi.com found here: http://www.megamanual.com/

Then read through the MegaManual. This contains all the details of how the MS works, assembly instructions, setup and install guidlines, tuning, wiring... it's all here: http://www.megamanual.com/v22manual/mtabcon.htm

Since most of us 2gners will be using the MSnS-E "extra" code (the only code that will run fuel and spark on Neons), the MSextra manual will also be very informative: http://www.msextra.com/manuals/MS_Extra_Manual_Index.htm

4. Specifically, what do I need to run MS on my Neon?

Option A: Unassembled kit (recommend diyautotune.com)

- MS1 v3.0 pcb
- Two VB921 high current ignition coil drivers (most kits come with one VB921 included, so you may just need to get one additional transistor)
- GM IAT and CLT sensors
- Wiring harness
- Stimulator (for powering and testing your MS before hooking it up to your car)

Option B: Prebuilt unit (recommend rs-autosport.com)

- When ordering the ECU from rs-autosport specify the follow options:

Configuration: Neon/420A
Fan control output: No (assuming stock ECM still controlls radiator fan)
Firmware: Latest stable release of MSnS-E
Map sensor: Your preference
Tachometer signal output: No (assuming no additional tach signal is needed. i.e. you're not adding any other hardware that requires a tach signal).
Upgrade to MegaSquirt II: Standard MS-1 controller

You will still need:

- GM IAT and CLT sensors
- Wiring Harness
- Stimulator (optional)

5. Firmware

The latest version of MSnS-E firmware can be downloaded here: http://megasquirt.sf.net/extra/ by clicking "download latest". This link also cantains all the info about the features of the "Extra" code and info about the Neon Crank Decoder, as well as hardware modifications required to control the coilpack. (the site says for pre-NGC Neons only, but MS will work on NGC cars and read the NGC crank trigger wheel)

The NGC code can be downloaded here:
http://megasquirt.texasneons.org/029v_ngc3.zip

FAQ Created by "turbodudey"

Whats average install time on megasquirt....DIY???

ORIGINAL: Kapitald

Whats average install time on megasquirt....DIY???


It all depends on your skill level with electronics and wiring really...the entire install could easily be done in a day at a steady pace. The actual assembly of the MS unit will also depend on how skilled you are with electronics.

I'm guessing the best way to start is by buying a fully assembled unit from...
http://www.rs-autosport.net/catalog/index.php

I myself would need help from someone to even install that [>:]

03neonRT,
i read on the megasquirt website that you can run up to 20 lbs of boost... on the regular megasquirt 1. and that you can only run the spark code with ms1 not ms2... does that mean that i couldnt run 25 lbs of boost in my car with the ms1?

if you get the 4 bar map sensor you can run over 50 ( i believe 58) or maybe im making that up but deff more than 20 and yes get teh ms1 ms2 sucks balls because its a pain to work with neons

ORIGINAL: spikeymikey87

if you get the 4 bar map sensor you can run over 50 ( i believe 58) or maybe im making that up but deff more than 20 and yes get teh ms1 ms2 sucks balls because its a pain to work with neons


You would be correct good sir...on both accounts. MS2 = Gay...at least for the moment ;).

okay, is this all im going to need to get going on this megasquirt project? besides obviously the solder materials...





1x
MegaSquirt Stimulator v2.2 - UnAssembled Kit (http://www.diyautotune.com/catalog/megasquirt-stimulator-unassembled-p-30.html)

1x
12' MegaSquirt Wiring Harness (MS1 / MS2 Ready) (http://www.diyautotune.com/catalog/megasquirt-wiring-harness-ready-p-43.html)

1x
GM Open Element IAT Sensor with Pigtail (http://www.diyautotune.com/catalog/open-element-sensor-with-pigtail-p-62.html)

1x
GM Closed Element CLT / IAT Sensor with Pigtail (http://www.diyautotune.com/catalog/closed-element-sensor-with-pigtail-p-58.html)

1x
VB921 Ignition Coil Driver (http://www.diyautotune.com/catalog/vb921-ignition-coil-driver-p-61.html)

1x
MegaSquirt-I Programmable EFI System PCB3.0 - UnAssembled Kit (http://www.diyautotune.com/catalog/megasquirti-programmable-system-pcb30-unassembled-p-46.html)

1x
MegaSquirt Tuning Cable (DB9 Straight Thru) (http://www.diyautotune.com/catalog/megasquirt-tuning-cable-straight-thru-p-35.html)

also, my engine is not boosted right now, but it will be in the future... would it be okay to use the open element sensor in the intake of my NA engine right now so that i dont have to buy an extra sensor when the turbo is ready?

also, the stim is v2.2, and im using the v3.0 pcb, do these conflict or what?

I dont think it matters what MegaStim version your using, and the only thing I see missing for the actual MS unit is you'll need a second VB921 Ignition Coil Driver. As for the intake sensor, you should be fine with the open element, but I'm not 100% sure...

i believe the pcb3.0 kit comes with one already like you said in the first post of this thread... so i just added one more to the cart thinking that one already came with the kit.

Does anyone have the factory srt-4 turbo on a SOHC setup with the megasquirt, if so, is there any way you can send me your fuel mapping and spark timing info?

im working on it

Awsome man, let me know how it goes.

how is this install going by the way mikey? Still having issues?



***ok question answered, just saw the other thred!!***

-03neonRT- now do they have MS2 better for the neons.....I read some update the other day (cant really recall the importance) for MS2 and neons...with this update would you still recomend MS1 over MS2???

the ms2 now can read the ngc trigger wheel, but i am unsure if anyone has it working though. but i say go for it

quick question about MS, can this unit function similar to say the AF/X street & strip PCM unit?

what limitations does it have. i have no idea how to tune a car's fuel system, thats kind of why i would like the AF/X but idk if a MS would be better

there are no limitations on the megasquirt, it can be tuned to do anything you want. it can surpass the af/x very easily, the only thing is that you have to start from scratch

ok, so who could i go to in the north east area to tune a megasquirt if i install it and all that stuff...

or is there a fuel map and such that you can upload and give to me because if i remember correctly, you can plug your laptop into the MS and grab the data off of it.

well the way the megasquirt is tuned is through a laptop. there is also a program that you can use a palm pilot with, but i prefer a laptop. i can give you my file, but it is in no way finished, and i asume no responsibility obviously. many shops dont know megasquirt, but im sure there are some. i just do mine myself. i liek that way better because i know what is going on if something goes wrong. also, before even starting to think about using it, you should read the manual at least 2-3 times and get an understanding of everything involved. then when you do start, start with just fuel then move to spark if you want

Off a little i am seriously ordering thiskit right now and i wanted to know if the (MegaSquirt I ECU kit v2.2) has a spark controler included with it, because i will not be needing that right away, i am more interested in fuel management, then ill go to spark later down the road, i am running my shadow N/A for now, and im not even sure if this is the right place to post such things but i did a search and this was the first page that popped up, i guess i just want a fuel management sustem, the price looks right if if some one shot me an email or pm with any additional information that would be wonderful, i guesss along with that kit i want to know if it has a spark controler with it, and if there are any other things i should be ordering along with this kit...

I know I ramble...
Thanks for listening...
-Dustinicus

yea it will have the spark control with it, but you dont need to hook it up if you dont want to. this is a neon section, but i think its the only megasquirt thread here lol. try msefi.com for more questions. you will probably get a better response there

Is mega squirt the best engine management for a neon?

ok, now i know that ms has a TON of advantages!!! a friend of mine has one on his civic and loves it, he talks about a "pretune" if u have a wideband?? i have a wideband, and need to know will this work with our neons like it did his honda?? it gets the ve tables to run rich so the car is able to be driven, even though u have to lean them out later..... is this something that we can do as neon owners?? he is going to help me with the install and i need to make sure that he is going to be giving me right info???

also

he has a rpm shift light in his car( ran off ms) can we do that to the neons even the wiring is ran off of a 2 cylinder rating? i really want to do this and get rid of my tach, keep it kinda sleeperish:D??????????

if you mean start with a base map and then have the megasquirt tune the rest of it for you then yes, it can be done. autotune is a feature in megatune that does it, but in my opinion it works like crap. i prefer to go out for a drive while logging the whole thing and then put it into the logviewer program which haa something called ve analizer. it will look through your whole log and give you a suggested ve table. that works great..

and yes you can run a shift light. its one of the outputs, but you have to solder something on the main board. i dont know exactly how to do it, your friend might though, and i know it says it in the megamanual. i believe the 2 cyl thing doesnt matter because it probably runs off the crank signal, which is the same way it sees rpm anyway so i assume that would look to the same thing

Is the MS only for the srt-4 neon or could I use it for the sxt 05 non turbo?
I got the jet chip but it was a waste of money nothing happen and here in colorado it's been raining and It got water damage and my car wouldn't start I was thinking it was my CAI that grab water but it wasnt it was the jet product because the symptoms where that my car started but then it turn oof and the Tachometer wouldnt work, after removeing the jet control module the check engine light when on so I took the batery cable off and then put it back on and it works. chasam the jet product suck balls.
IS that true that all the stock pcm for 05 neons void every bolt on upgrade that I put on?How bout if I put the APEXi S-AFC NEO would that work? or is that only for turbo and vtec I found that at modernperformance.com but it only talks about vtec.
o I need to put a clutch would a stage 1 fidanza with flywheel work or its BS? should I buy the oem one?

My neon is an 05sxt I only have the srt exhaust and the cai and UDP.

first, no your pcm will not cancel any upgrade you put on. you would get more power if it were put on a 02 and below neon, but you still do get some power. yes, you can run your car on a megasquirt. i had mine, non turbo and running on the megasquirt for quite some time and it was fine. i actually am selling my megasquirt, with all the sensors and wiring you need, so if you want it pm me.