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Mega Squirt Fuel Injection?


BOOSTIN HARD
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Galant VR-4 org Post #: 332645 posted 04/27/06 01:25 PM     Remind Me!  Send Private Message   Edit Post      
I have been doing allot of research lately and am starting to like this setup more and more. Just wondering who has one, and how much was the total investment? I have their website so I don't need it, or the prices on the stuff so save your time looking. Im just wondering what is everything you need to make it work and the total cost on what you have into it, and how you like it. I have someone that can assemble it for me. Thanks

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RTSGVR-4
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Galant VR-4 org Post #: 332727 posted 04/27/06 04:53 PM     Remind Me!  Send Private Message   Edit Post      
its fairly cheap, but you have to build you own components, which is why you dont see it more often. when it works it works damn good though. theres a guy around here with it on his alltrac

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93accordEX
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146/2000


Galant VR-4 org Post #: 332732 posted 04/27/06 05:15 PM     Remind Me!  Send Private Message   Edit Post      
A lot of bimmer people run megasquirt. it can be a great system to run, but its a major PITA to install.



10/1000 - sold
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green is... greener

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gaylantvr4
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Galant VR-4 org Post #: 332775 posted 04/27/06 07:33 PM     Remind Me!  Send Private Message   Edit Post      
Quote:

its fairly cheap, but you have to build you own components, which is why you dont see it more often. when it works it works damn good though. theres a guy around here with it on his alltrac




They come preassembled now all you do is buy the spuirt and wire away. I will direct deisalgreek to this thread. He has done quiet of few megasquirts on dsm's and was one of the first one to do a megasquirt on a dsm.



998/1000

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gtluke
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Galant VR-4 org Post #: 332822 posted 04/27/06 08:55 PM     Remind Me!  Send Private Message   Edit Post      
he's too busy getting reamed out for talking about it on posdsm



86gt pte67gtq
galant vr4 1464 12.83 @ 106
05sti, 400whp
00 2.5rs, for sale

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spoulson
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Galant VR-4 org Post #: 332909 posted 04/28/06 06:20 AM     Remind Me!  Send Private Message   Edit Post      
I've been checking up on standalones recently for another project. One limiting factor, IMO, is it only has 2 injector drivers. This means you need to run batch or bank mode. You can't run sequential fuel injection. In other words, instead of firing the individual injector only during that cylinder's intake stroke, you fire half injectors at one crank position, and the other half at another, whether those cylinders are at intake or not.

Sure, it works, but it's a step backwards in EFI technology. One could argue that when you're injector is nearly maxed at 80% duty cycle, you're firing when the valves are closed anyway. So it's your preference, I guess. Our cars have pretty advanced EFI out of the box. I would sooner consider an AEM.



Shawn Poulson*

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dieselgeek
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Galant VR-4 org Post #: 332951 posted 04/28/06 08:51 AM     Remind Me!  Send Private Message   Edit Post      
Most aftermarket EFI systems run single or dual injector drivers as their "base" configuration. Sequential EFI is most important for emissions control, there is some good reading on the internet why SEFI is not important from a performance standpoint, and little from an economy/emissions standpoint. On one 4G63, we logged 30+ mpg using 110 octane fuel during a drive to/from our local track (30 miles each way), using "alternating bank" firing, and the owner reports good throttle response, and no stumbles, equal to a factory tune. Note that most high powered aftermarket EFI'd cars, are using either batch fire or bank-to-bank. There is ONE major advantage of SEFI, however; tuning individual cylinders!! V engines, and some inline 6s, can have a harder time getting even fuel/air distribution than what we've seen on the 4G63, and in these cases tuning individual cylinder trims would be a benefit. I haven't needed it on a 4G63 however.

Same as with an AEM, with practice one can make megasquirt run the 4G63 as well as a factory issue tuneup. WOT is easiest to tune; it's the cold start, part throttle drivability, warmup drivability, etc. that is most challenging. I think we have really good maps for a variety of combos that I'm willing to share/discuss etc.

Megasquirt is technically a "Do-It-Yourself" project; but don't let that fool you into thinking it's "homebrew" or "unreliable" and especially don't let it make you think that it's not feature-rich!! The original designers were "in charge" of EFI for a large US automaker, Megasquirt is their gift to the Grassroots/DIY autosport community.

Megasquirt has been carried further by guys like Eric Fahlgren and James Murray, both professional programmers & major gearheads. Actually, something like 50 people are contributing to software & hardware for the MS; the recent v3.0 circuit board was designed by a guy who designs electronics for the swiss military, with upgrades for "extreme low temperatures" (so the guys who 4-wheel in the Arctic can start their trucks at 60 below zero, and still connect with "Megatune").

Development includes a number of "testers" (I'm a beta tester) that must implement, and report status of, any new features before they're released to the General Public. Documentation is now being better organized (although, FAQ's for specific engines are in need of more help; thankfully, a guy on dsmtuners has put up a howto that applies to Galants as well as DSMs). I've asked for features to be added to Megasquirt's "Extra" firmware a few times, and they were implemented within 2 weeks of my request.


Anyways, lots of people like to say the MS is "cheap junk" or all kinds of hater things that get said when something new comes out, and outperforms other systems in the price/performance category.


To run megasquirt on a 4G63 and control both fuel and ignition timing, you need to use the original "Megasquirt-I" chip, and I recommend using the version 3.0 circuit board with that. Then you must make a few modifications that are well documented on the dsmtuners HOWTO. Basically, you are "conditioning" the CKP and CMP signals from the 4G63 "Cam Angle Sensor" to make the MS capable of reading them (2 simple pullup resistors). Then, you configure two of the "LED" circuits on the MS to provide a 5-volt pulse to trigger the 4G63's "Power Transistor" which then fires the coils.

I'm sure there are more specific questions, go ahead and ask them! I'll answer as quickly as I can.

thanks,
-scott

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sleepyvr4
I Hate Kitty Cats


Galant VR-4 org Post #: 332958 posted 04/28/06 09:10 AM     Remind Me!  Send Private Message   Edit Post      
mega squirt doesn't have knock based timing control - correct?

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dieselgeek
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Galant VR-4 org Post #: 332959 posted 04/28/06 09:16 AM     Remind Me!  Send Private Message   Edit Post      
incorrect, it has knock based timing control. As a tuner however, I'd suggest NOT using it for anything more than an emergency timing retard, in case you get a bad batch of pump gas. Since you're running "MSnS-Extra" in order to use the 4G63 CAS, you have it - and many other things - as options.

Read this link to get the lowdown on MS options: http://megasquirt.sourceforge.net/extra/


-scott

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BOOSTIN HARD
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Galant VR-4 org Post #: 332999 posted 04/28/06 10:37 AM     Remind Me!  Send Private Message   Edit Post      
How much for a total system if I build it myself. Also can you PM me your phone number so I can further discuss this system. Thanks for all your input, it looks like you have done your homework on the system.

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dieselgeek
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Galant VR-4 org Post #: 333000 posted 04/28/06 10:40 AM     Remind Me!  Send Private Message   Edit Post      
You can do a complete setup for under $400 if you do it all yourself. The V3 MS is about $180 for a kit, and $350ish for a prebuilt unit. I get mine from DIYautotune.com and there's a good guide on setup for 4G63 on his site. There's a better HOWTO going on at dsmtuners.com though. Works for the galant just fine.


Around here, I have people sending me their cars for the complete deal, that seems to run around $1400ish for an install and tuned, but I only do this as a hobby - not professionally. I'm not a paid advertiser here either, so I don't want to step on any toes.


That being said, I've received a few PMs from people. I would be just as happy helping guys do it by themselves, as I would being paid to build MS and send it "ready to go." But I guess if someone has a major project going on and no time to worry about building and tuning the MS, gimme a shout.

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BOOSTIN HARD
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Galant VR-4 org Post #: 333001 posted 04/28/06 10:44 AM     Remind Me!  Send Private Message   Edit Post      
How much time is it going to take to fine tune it for the drivability? Also, how user friendly is it?

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BOOSTIN HARD
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Galant VR-4 org Post #: 333002 posted 04/28/06 10:46 AM     Remind Me!  Send Private Message   Edit Post      
Are you the one that tuned the red 2g that blew up on the dyno. It looked like it was running awesome until the rod bolt let loose. It also looked like it idled great.

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dieselgeek
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Galant VR-4 org Post #: 333003 posted 04/28/06 10:48 AM     Remind Me!  Send Private Message   Edit Post      
I'd suggest doing some reading.

It's the same as an AEM as far as "learning curve" but, there's a bit more support online if you have problems. There's a good tuning guide in teh "MegaManual" http://www.megamanual.com/v22manual/mtabcon.htm


User friendliness is as well organized, and more easy to understand, than an AEM in my opinion. Easier than ANY standalone I have tuned, actually (DFI GEn 6 & 7, some haltech, FAST, BigStuff3).

I've made plenty of maps that apply to different combos you are likely to have though, we have real good drivability on these cars and have shown that one tune can get you running and real close, with you only having to debug and do final tuning yourself.

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dieselgeek
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Galant VR-4 org Post #: 333004 posted 04/28/06 10:51 AM     Remind Me!  Send Private Message   Edit Post      
Yes, that was ours. Wish we hadn't video'd it coming apart, since now it seems many sites believe the megasquirt "blows up 4G63s"

but whatever. It's on a TON of cars I tune. It's remarkably reliable!! We drove it on Parish's blue truck for 2400 miles last year, all around the midwest for that Drag Week thing in Hot Rod magazine, and had exaclty ZERO issues with the MS. I brought enough spare parts to MS the entire fleet of Drag Week cars, but never once had any issues. I'm sold on it's reliability, as much as any other standalone. The new v3 board is designed to be competitive with what you get from the commercial vendors.

-scott

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BOOSTIN HARD
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Galant VR-4 org Post #: 333005 posted 04/28/06 10:51 AM     Remind Me!  Send Private Message   Edit Post      
How much would you charge for the base maps?

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BOOSTIN HARD
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Galant VR-4 org Post #: 333008 posted 04/28/06 10:55 AM     Remind Me!  Send Private Message   Edit Post      
Can you write up a list on all the parts you need and what version is the best to run. Also can I order from you or should I order from DIY.

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dieselgeek
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Galant VR-4 org Post #: 333010 posted 04/28/06 11:03 AM     Remind Me!  Send Private Message   Edit Post      
http://www.dsmtuners.com/forums/showthread.php?t=222199&highlight=megasquirt


I'd get one from Jerry at DIY, then follow the Howto above for the mods, and you're off and tuning!

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BOOSTIN HARD
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Galant VR-4 org Post #: 333012 posted 04/28/06 11:11 AM     Remind Me!  Send Private Message   Edit Post      
What about the base maps. Thank you for all of this info and for helping that guy write that article, you are a valuable resource to the dsm community.
P.S. are you the one that tuned that red 2g that blew up?

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dieselgeek
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Galant VR-4 org Post #: 333013 posted 04/28/06 11:12 AM     Remind Me!  Send Private Message   Edit Post      
yes, the red one was one of mine. He should have used ARP rod bolts.

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BlownMe
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Galant VR-4 org Post #: 333016 posted 04/28/06 11:20 AM     Remind Me!  Send Private Message   Edit Post      
Quote:

What about the base maps. Thank you for all of this info and for helping that guy write that article, you are a valuable resource to the dsm community.
P.S. are you the one that tuned that red 2g that blew up?



This system is kinda like freeware in it's concept, not the hardware, but the software. Go to the sites and read. Most people I know that are using MS (turbo ford guys) don't charge for their maps, they just share the knowledge. It's a very friendly enviroment, not at all like the major marketed standalones that want $$ for evey upgrade or firmware/software tweak.

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dieselgeek
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Galant VR-4 org Post #: 333021 posted 04/28/06 11:25 AM     Remind Me!  Send Private Message   Edit Post      
when you are ready for them, I have all the 4G63 maps you'll ever need and I give them out freely!!!!!


This is Open Source. It's all about product development and quality - NOT about proprietary BS and marketing hype. MS definitley will run your car like a factory tune, while supporting much more power than a factory computer would (without things like DSMlink, etc. - all good products, for sure!!).


I have to say one thing here. This site, and the SyTy forums, is one of the best no-BS forums I've ever been on. Try talking about Megasquirt on the "posdsm" board, where the guy who teaches EFI101 will tell you all about how bad megasqsuirt sucks, even though he hasn't used one. YOu guys definitely rule here. How do you get a forum going without a ton of internet haters anyways???? this place is A+ seriously.

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BOOSTIN HARD
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Galant VR-4 org Post #: 333034 posted 04/28/06 11:56 AM     Remind Me!  Send Private Message   Edit Post      
So a list of everything I need is

1)Mega View
2)Mega Squirt I PCB3.0
3)Mega Squirt stimulator
4)4 bar Map Sensor
5)Tuning Cable
6)Relay Board
7)Air Inlet Temp Sensor
If there is anything I don't need or anything I do need please let me know or add it. I looked through the websites and never found a list on everything you need for a complete system, but maybe I overlooked it.

Again thanks for everything, Chris

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dieselgeek
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Galant VR-4 org Post #: 333062 posted 04/28/06 12:37 PM     Remind Me!  Send Private Message   Edit Post      
skip the megaview.

everything else looks good.

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BOOSTIN HARD
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Galant VR-4 org Post #: 333069 posted 04/28/06 12:49 PM     Remind Me!  Send Private Message   Edit Post   
Whats the diff. between the mega squirt I and the II?

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