Anyone use the Megasquirt 3 boards with a healthy higher rpm combo?

[funcars]

I'm looking at using Megasquirt3 with a fairly large cam that may need some Alpha N along with regular SD. I also have a WBo2 to use with it. Have anyone run one of these with a more "edgy" combination? I have lots of experience with EFI tuning (hacked TPI, Accel 7, etc) and I'm an EE but have never used megasquirt. It looks good on paper, both price and capability wise, but I don't seem to find much info on using it with more serious motors.

Does anyone have any experience with one of these systems with a cam over 255 @.050 duration and at least 7500 rpm?

Thanks

[Ollie8974]

I have not had any personal experience with MegaSquirt on a serious motor.
This link is to a Big Block 515 with twin Garrett turbos.
http://www.diyautotune.com/cars/cars.htm

[MonzaRacer]

First of all you need to be up on how fuel and timing work. on big cam engines you may need to idle as N-apha and then switch to speed density or opposite.
Megasquirt is a tuners dream as it will fit anything and can adapt to just about any sensor out there, if you can get specs on it.
It also has many of those same parts already built into the code.
Oh and with Tuner Studio you can use any old lap top for the most part so Ebay $50-$100 computers hard mounted in your car can work. Also some of the newer ITX stuff with 12v sourced power supplies can be built into the car even. Meaning if you want to use a smaller ssd(solid state drive), maybe even in a removable case so you can take it inside and work on stuff on similar set up inside and if you build 2 at a time you can have a spare in case you F-UP you have back up and and still be as cheap or cheaper than most out there. AND the basic hardware,according to site BOM, would cost about $85-$100 at the time of writing,,, might be little higher now.
Only proprietary parts are circuit boards, processor daughter cards with MS2/MS3, case and few other minor pieces.
Buddy of mine bought the critical parts from DIY I believe, then ordered all internal parts from a MIL-SPEC supplier in double/triple duty/high heat stuff. He literally runs a non destructive testing shop for government electronics and even ran it through heat/cold/vibration tests after building it AND turned it in as a class project, after instructor understood certain bought parts designs were "owned" but couldnt be replicated by owner/builder.
The unit was maxed out with server based "stimulator" program and ran through his test bench(they are contractor so he can use it without wasting Government moneys) on his breaks/lunch.
Only one failure from cold solder joint. Then inhouse electronics tech helped him learn how to solder better, even helped him re do some of the soldering.
He is really impressed with it and from the fact that Big Squirt 3 was going to cost him $3k plus and this one is less than $500 with MIL-SPEC parts, he is stoked. And his car is running and HE tuned it. WE built 3 itx/mobil based car computers for him and he has one wired into his car (Cobra "kit" aluminum Shelby body on a repaired/wrecked Factory Five chassis, bought with bad body) one for spare, and one for home testing.
He set it all up in a removable setup for easier repair/testing (he does engineer things too sooooo) and in his dash is a nice LCD monitor and he found some sort of GPS kit that works in it too.
But basically its awesome, there are guys running motorcycles with basic setup and guys running 2000+hp stuff with it. It has been in everything from lawn mowers to competition airplanes and thousands of daily drivers.
If you want to know what you have, how it works and be able to fix it and have thousands of techies helping with ideas, its great.
If you want many times the cost, 4 guys who work 8 to 8 4 days a week who couldnt tune a skate board but work in "tech help" for an FI company dont buy it.
not to bash a name but one of the bigger FI companies gets bad reviews over on theturboforums.com and people still seem to want to buy stuff thats over priced and under tech helped.
Go figure.

[Ollie8974]

Well said Monza Racer.
this is the link to MegaSquirt.
http://www.megamanual.com/index.html

[classicfirebird]

before i turbod my car the cam i had was 264 @.050 and worked fine with megasquirt. i used the speed density without alpha n. it took a little longer than usual to set up idle but when set it worked fine.

[xx_ED_xx]

I like megasquirt. unfortunately support can be somewhat lacking. I have bought assembled units in the past. But if you are very familar with them then they can be the most robust setup to buy for bottom dollar.

[68Formula]

Curious how radical this setup is. What is your displacement? Compression ratio? Is this a roller or flat tappet (assuming roller but...)? What's the LSA?

[hessdawg]

Ive got ms1 running alpha n on my ninja with huge overlap. i have about 8 inches of vacuum at idle. and i have run it to about 12,000 rpm

[MonzaRacer]

yikes!