megasquirt

[spider_slayer]

any of you guys ever used or heard of someone using megasquirt in our cars? its a pretty popular standalone for probes and 626's

here is the link Http://msefi.com

let me know what you guys think

[cheez80]

i'm not sure of any s-chassis guys running the ms efi, but i do know a few ae86 guys with 20vs run the thing. supposedly, on ae86, you can have the stock ecu control stuff like a/c, etc., and just use the ms to control stuff that's related to the engine. anyway, i'm just rambling, but it does seem to be a kick *** deal, especially if you're going to building a track car and don't need any miscellaneous functions.

good luck

[spider_slayer]

cool, a buddy of mine bought it to run on his 626, but the project went sour after some scandlous f**ker screwed him so he had to scrap the project. but if everyone says its cool then i'll probally go for it after a while.......i was jsut wondering cause you never hear any of us sr guys running it

thanks for the reply

[AR31TU]

One of my friends who used a Megasquirt on a 16V VW GTI said it kinda sucked because he had to retune it every time the weather changed. It has provisions for changing atmospheric conditions but not very good ones. This was a while back though, so there might be a solution to that now. I don't know how it will handle boost.

This is an article pertaining to mustangs but the information is universal. It gives a basic summary of different engine control systems. Some are mustang only but most of them apply to all cars.

http://www.turbomustangs.com/t...e.htm

Personally, I'd go with ROM tuning (TechTom or something). Nissan ECUs are remarklably flexible. There are many high horsepower 300ZXs running on stock tuned ECUs. One person with a ROM tuned SR was running 850cc injectors but got close to stock MPG.

[spider_slayer]

and this is on the stock sr ecu? i've heard of the rom tuning but have really never looked into it.....is it something you can do your self or do you have to be on a dyno? i've also heard its pretty expensive

megasquirt would cost me about 400......

[evildky]

I am running MSnS on my 71 240Z with a turbo 2.8, it's totally flexible can do about anything you want you just gotta take the time to learn the system, mine is running fuel and spark they have software to suppoer nitrous turbospoolup/ water injection and just about every crazy thing you can think of

[spider_slayer]

no kidding.....your running MS on your sr? awsome. so you enjoy using it? i am assuming that you are using the stock ecu and the MS as a piggyback. how did you integrate the ms into your harness? was it pretty tricky to figure out?

nvm the sr statement.....weren't the older 240z's carburated?sounds like you musta put some work into that car.....and in my case how do you think i should go about integrating the MS into my existing ecu.....i honestly don't know much about the cars computer.......i jsut let it do its job

[evildky]

no kidding.....your running MS on your sr? awsome. so you enjoy using it? i am assuming that you are using the stock ecu and the MS as a piggyback. how did you integrate the ms into your harness? was it pretty tricky to figure out?

nvm the sr statement.....weren't the older 240z's carburated?sounds like you musta put some work into that car.....and in my case how do you think i should go about integrating the MS into my existing ecu.....i honestly don't know much about the cars computer.......i jsut let it do its job

ummm....no I am running the Megasquirt 'n' Spark on my 71 Datsun 240Z as a full stand alone and my engine is a L28ET which is an 81-83 280zx turbo motor for the not old school peoples, and yes I love it it rox the hell out of the old crappy stock system, no more MAF, just a MAP and IAT and the stock CHT

[evildky]

and yeah the car started life with a Natrally aspirated 2.4 L6 which was carb'd, I wouldn't suggest using the MSnS as a piggyback, it's making things more complicated for less benefit, I HIGHLY rocomend using MSnS as a full stand alone, check msefi.com and megasquirt.info for more info

[evildky]

and oh yeah I made a completely new harness, the old harness had pigs for things I didn't need and the MSnS needed wires run to a coupla new sensors tha car didn't have before, there si a guy with RS Autosprts taht makes a labeled rated wiring kit (wires only no connectors) for about $50 makes life a bit easier and it's nice to reroute your harness where you want it, really helps in a car that was origionaly carb'd and the MSnS ECU and Relay board combined are smaller than the 83 ECU

[s13sr20chris]

i believe the ca guys run the megasquirt in their s13's quite a bit.

[spider_slayer]

cool, i'll have to check that out.....thx for the help so far guys

[red240sx sr20det]

Sorry guys I dont know all about the sr wiring and ecu so the megasquirt is a stand alone system which can control everything maf to spark to fuel correct? what is a resonable price and how do you wire it in? Thanks

[evildky]

Sorry guys I dont know all about the sr wiring and ecu so the megasquirt is a stand alone system which can control everything maf to spark to fuel correct? what is a resonable price and how do you wire it in? Thanks

you don't need the maf anymore, it's just an intake restriction, it uses only: TPS, CTS, IAT, MAP and CAS, you get the connectors for the sensors and build a wire harness it's not as hard as some people think, my harness is much cleaner and smaller than the stock 83 harness and of course the stock harness had plugs for things like the MAF that I didn't need anymore and lacked plugs for things like the IAT and MAP so a custom harness is the ideal way to go and you can make the wires long enough to reach whereever you want to locate the relay board, the parts to build a MS will run about $200 last I checked but there are people that sell assembled usits for $250-500, depending on if you want the relayboard the DB29 cable etc, check megasquirt.info for more details

[Radar]

A friend of mine sent me to this board....so this is my first post (hello!).

I have been dealing with MS (MSnSExtra) for over a year now and it is by far one of the greatest bang/buck things out there. In terms of controling injectors, it is very simple to install (if you don't mind some soldering or wiring) and very flexible. Does it do more than your stock ECUs? Not in its orginal form, but being that it is an open source project, a lot of development has taken place. I highly suggest you check out:

Http://megasquirt.sf.net/extra

I have a 94 MX6 v6 Turbo (running bluebird injectors ) fully controlled by MS. My stock ECU isn't even currently plugged in at the moment.

If you wish to remove your MAF, you need spark control as well as fuel. In order to get spark control with MS or many other stand alone EMSs that are not plug/play you need to setup a proper trigger system...like the flying magnets that SDS uses. The standard 12v pulse from a coil will not suffice for controling timing. In both the KA motors and the SR motors, I have seen the same optical Cam angle sensor....it looks just like the ones in the turbo 280Zs except it has 4 slots instead of 6. That signal along with a pullup resistor is enough to get a solid tach input. I didn't get much time to experiment with his ride as far as timing, but it appeared the stock ignitor in your disties runs on a 5v pulse....if that is the case, you can probably mod yoru MS to run timing as well without having to buy other parts (HEI, MSD, etc).

I am currently looking for an SR powered car to sponsor in the south florida area. I want to figure out the timing part 100%. If somebody comes through, I'll post the info allowing you guys a super cheap alt to rom tuning.

[s13sr20chris]

i have been thinking very hard about using the stock ecm plus megasquirt for additional injector control.

[spider_slayer]

my friend still has his MS from his PGT project that fell through. i was thinking about buying it from him and running it on my sr. it is definitaly a good deal. however, with greddy emanage ultimate out for about 150 more i can do everything ms can and all of the wires are labeled. to run the ms you would pretty much need to make your own wiring harness and i simply don't like electrical work so i'll just wait and save my money unless someone could make a harness for me.

[twofourzeroSX]

my friend just got his on his eclipse. its amazing. the wiring isnt that easy but the features are just endless

[evildky]

i have been thinking very hard about using the stock ecm plus megasquirt for additional injector control.

for the effort you'd be better off ditching the stock system and doing the full MSnS install and run the bigger injectors and adjust your maps accordingly

[s13sr20chris]

i know, i thought it might be a nice way to try to preserve some streetability and idle stability with bigguns.