well i repaird a old laptop my dad had put in a new hard drive and i got a stimulator for my megasquirt to test it and this morning i built it in 2 hours and i think i am going to see about selling some megasquirts on ebay so i will buy another MS2 kit
well i am messing with tunerstudio but it said no conection so i think i will need the USB to DB9 conector they say to use instead of the one i picked up at radio shack
I really don't see that it will make any difference but the DIY site said theirs works with tuner studio what the hell do i know i know nothing when it comes to electronics
I am using MS3+MS3x on my LS4 , megasquirt has made some huge leaps . I believe the MS3pro does as much if not more than most oem ecu's now. I am sure you will be quite happy and tuning is real easy .
I have loaded the bin file that i got from a guy and he has the AFR at 14.8 and from what i understood thats great for fuel economy but 12.1 is best for power is this still true or is the new gasoline that has ethanol changed all that
I have MS Tuner Studio lite is it worth buying the full version as i see they have a live ve tuning where you turn that on while you are driving and it is supposed to optimize the fuel tune from what i have read . this is there link http://www.tunerstudio.com/...studio/tunerstudioms
I have loaded the bin file that i got from a guy and he has the AFR at 14.8 and from what i understood thats great for fuel economy but 12.1 is best for power is this still true or is the new gasoline that has ethanol changed all that
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Originally posted by carbon:
You need even more for ethanol... 14.7 is stoichiometric for 100% gas.
After doing some reading i know where i was getting the 12:1 ratio it is for forced induction i must have read that when i had my jet boat with the blown small block and i do wonder how much the ethanol in the gas effects it . I read that 14:7 is best for power but it cuts engine life do to you are right on the edge of burning it up but at about 13:5 for NA engine is safe and shouldnt cost you much HP. I forgot to mention all the tunning that i am familar with is old school looking at the spark plugs
[This message has been edited by engine man (edited 08-30-2013).]
I am not sure if I understand , if your cruising in a light load scenario you can run as lean as your engine allows. When you start to get lean miss fires that's too lean. At WOT and full load you want to run at least 13:1 I set my AFR table to 12.75 for a mild safety factor.
Have you set up your AFR table ? If so then let "VE analyze now" do its thing and slowly work up to WOT runs.
After doing some reading i know where i was getting the 12:1 ratio it is for forced induction i must have read that when i had my jet boat with the blown small block and i do wonder how much the ethanol in the gas effects it . I read that 14:7 is best for power but it cuts engine life do to you are right on the edge of burning it up but at about 13:5 for NA engine is safe and shouldnt cost you much HP. I forgot to mention all the tunning that i am familar with is old school looking at the spark plugs
14.7:1 is stoichiometric. It is *NOT* best for power. It is best for operating catlysts. If you don't need cats, forget 14.7.
As mentioned above... at idle and light load, go as lean as you can without misfiring. You'll need to smoothly move the AFR down to between 12.5:1 and 13:1 at WOT.
intresting so 12.5:1 to 13:1 will make best power this is good to learn the newer ways of tunning since i am use to tuning a carb by looking at plugs for a nice clean light tan and i must move ahead and learn modern engine management
ok I am looking to start some wiring so can any one tell me what wire is what on the 2 ecm plugs for a 88 gt I figure that way I can have the megasquirt right where the stock unit was or tell me how you wired it up to your engine to give me a better idea
I assume you are looking for the wires that supply things like the fiero tach, speedo, brake switch, +12DC, grounds, fused engine circuits etc. While I'm no expert, there are two great pages in this 4.9 wiring thread by rockcrawl; https://www.fiero.nl/forum/Forum2/HTML/098096.html . You want the C500 fiero connector in the engine bay passenger side, and the C203 fiero connector under the ECM. Both are on the thread first page and will provide valuable info to integrate your megasquirt to the fiero wiring. I hope this helps...I have been looking forward to seeing this project run! If you got any progress pics, please post them. I'd love to see how things are going.
Something like, yes, but not those. Those are for the ECM connectors. He'll need the C203 and C500 pinouts to wire up the engine bay harness to work with the MS3 and interface correctly with the Fiero body.
pleas explain why i cant cut the 2 plugs off and wire them to the MS2 plug and then conect them to the apporopit wires on the engine by splicing them to gether
I bought some wire from DIY tune for the wring harness so i hope to start on it this weekend and i still need to do 1 more mode to the megasquirt 2 so i have a knock sensor
pleas explain why i cant cut the 2 plugs off and wire them to the MS2 plug and then conect them to the apporopit wires on the engine by splicing them to gether
I was assuming you were starting with the Audi wiring harness...
i am doing the plug that go's to the ms2 that way all i have to do is splice wires in to the wiring harness if it is nice tommorow i will work on getting rid oe all the audi wiring i dont need but i feel i can splice it all together the way i want
[This message has been edited by engine man (edited 09-13-2013).]
I got my wire and I sat down this morning and made up my DB 37 plug for the ms 2 but I have to go into work soon so that's it for today I will do more tomorrow
I have been hard at work on the wiring harness and i have it to where i have the old ecm plugs cut off snd the new megasquirt 2 plug wired on and now i just need to slpce it to the audi harness and i will be done with that then i need to hookup colling and fuel to start it up
You should use the Fiero harness for power, grounds and signals to the body (temp gauge, tach, fuel pump relay, A/C comp relay, many others) You should use the Audi harness for the signals and controls to/from the engine Graft it all together at the MS unit.
Pay careful attention to routing, as it's much easier to route the harness neatly now than it is to re-work it later.
[This message has been edited by Will (edited 09-24-2013).]
ya i need to get back on it as there is not much left to do on the harness but i have been helping out with my dad and mom as he had a hart attack friday and she has alzhiemers so she cant be alone. He is fine now but he has 4 stents and still needs a little help with thing