[Supras] looking for opinions on Megasquirt from community

[Sean Cavanaugh]

what part about idle control specifically are you refering to?
 
the unit has full fuel and spark control, each tunable with a 12x12 chart thats interpolated down to pretty high detail. unit can utilize a wide band O2 sensor to run the car at closed loop mode all the time. recently new code was added that allowed a car to run at near perfect air/fuel ratio with only about a 0.1 variance no matter the load/RPM/throttle variance (tester was autocrossing on a dirt track at the time). its still being tuned for faster response.
 
the ECU itself cannot datalog, but if you run it attached to your tuning laptop, the laptop can record the data for later playback. the system has a pretty decent autotune setup but will not beat true manual tuning. you start with your default settings, then autotune gets you pretty close to end result and then its manually tuning the fine details.
 
there is a daughterboard addon for the MS that adds in a whole slew of extras such as boost controller solenoid, nitrous solenoid, 3 stage shift lights (low, mid, hi), 2nd O2 sensor (datalog only), plus other features.-Sean


From: admin at supras-ireland.netTo: millenia2000 at hotmail.comSubject: Re: [Supras] looking for opinions on Megasquirt from communityDate: Mon, 11 Jun 2007 17:44:50 +0100



Yeah no more wasted spark - COP though mainly for ashetics. 
I dont have much info on any of the megasquirt stuff so would also like to hear about the idle control and if theres any closed loop/open loop wideband tracking/autotune features, or solinoid control for boost control

----- Original Message ----- 
From: Sean Cavanaugh 
To: Supras Ireland Admin 
Sent: Monday, June 11, 2007 5:02 PM
Subject: RE: [Supras] looking for opinions on Megasquirt from community
Stock CPS has been in there. thats what mine was modeled after except i was using a distributor (same sensor wheels). Just a simple 12+2 config that way when i switched from distributor to coil pack system, add a wire and change a simple setting, DONE (minus actually swapping over the car parts)  6 igniter wires, you looking for direct COP style where yer not running wasted spark anymore?  -Sean

> From: admin at supras-ireland.net> To: jjobe2 at supratech.org; Millenia2000 at hotmail.com> CC: Supras at supras.com> Subject: Re: [Supras] looking for opinions on Megasquirt from community> Date: Mon, 11 Jun 2007 16:09:32 +0100> > Yup how about 6 injector + igniter Drivers and the ability to use Stock CPS> for timing> > ----- Original Message -----> From: "Jim Jobe" <jjobe2 at supratech.org>> To: "Sean Cavanaugh" <Millenia2000 at hotmail.com>> Cc: <Supras at supras.com>> Sent: Monday, June 11, 2007 3:26 AM> Subject: Re: [Supras] looking for opinions on Megasquirt from community> > > >> > How about 6 coil drivers AND 6 injector drivers?> >> > On Sun, Jun 10, 2007 at 12:27:24PM -0400, Sean Cavanaugh wrote:> > > For those in the group who have looked to replacing the stock ECU either> with piggybacks or full replacements> > >> > > thru your researching and browsing, some of you might have come across> the MegaSquirt unit. I want to know what features (or lack there of) that> turned you off to the unit. I'm friends with one of the main developers and> I'm trying to get him a list of stuff that it was not able to provide for us> before so he may possibly fix/add/address them. the MS2/extra is getting> MUCH closer to being able to replace ECU of any car. I'm already working> with him to be able to get a fuel injector daughterboard that would support> splitting the stock 2 channels into the 3 channels our cars know and love.> > >> > >> > > any insight would be appreciated. end result of all this will be a PnP> module for our supras that can run it much better than the stock ECU ever> could and for a fraction of the cost of high end aftermarket ECU's> > >> > > -Sean> >> > _______________________________________________> > Supras mailing list> > Supras at supras.com> > http://supras.com/mailman/listinfo/supras_supras.com> >> >> >> > --> > No virus found in this incoming message.> > Checked by AVG Free Edition.> > Version: 7.5.472 / Virus Database: 269.8.13/842 - Release Date: 09/06/2007> 10:46> >> >> 

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No virus found in this incoming message.Checked by AVG Free Edition. Version: 7.5.472 / Virus Database: 269.8.13/843 - Release Date: 10/06/2007 13:39
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