Megasquirt To MS or not to MS
#1
To MS or not to MS
88 turbo II
planned setup
750 primaries,
1600 secondaries
t61 turbo 20psi
stock ignition with msd ( would like to run individual msd coils if I could)
Greddy fmic (am thinking about an efan for this)
koyo rad
3 in single exhaust
no emissions
no ac
no ps
manual boost controller (would like to operate a boost solenoid)
wideband kit would like to record this)
egt kit ( would like to record this)
turbo timer (I have this now but would like to integrate it if possible)
Anti-lag /launch control (would like this to be integrated)
44mm waste gate
Shooting for 400whp would like to eventually make 500whp
I have some experience and am going experience with embedded controllers and c programing.
I have no problem soldering everything together.
I looked at the c code for the ms and was able to follow most of it.
Other features I am looking for are:
-automatic boost adjustment based on air temperature
-rev limiter (ignition or fuel or both)
-I would also like to send direct voltage to my secondary fuel pump at a certain boost level.
can all this be done?
Is it likely I could do it.
I feel I could do the basic setup of fuel and timing control, but it is the other features I am not sure about.
I know the haltech E8 can do most of this but why should I pay so much more if I can get all the same features for a fraction of the price.
Another determining factor is time, how long does it generally take to build one of these for a guy like me.
Thanks
planned setup
750 primaries,
1600 secondaries
t61 turbo 20psi
stock ignition with msd ( would like to run individual msd coils if I could)
Greddy fmic (am thinking about an efan for this)
koyo rad
3 in single exhaust
no emissions
no ac
no ps
manual boost controller (would like to operate a boost solenoid)
wideband kit would like to record this)
egt kit ( would like to record this)
turbo timer (I have this now but would like to integrate it if possible)
Anti-lag /launch control (would like this to be integrated)
44mm waste gate
Shooting for 400whp would like to eventually make 500whp
I have some experience and am going experience with embedded controllers and c programing.
I have no problem soldering everything together.
I looked at the c code for the ms and was able to follow most of it.
Other features I am looking for are:
-automatic boost adjustment based on air temperature
-rev limiter (ignition or fuel or both)
-I would also like to send direct voltage to my secondary fuel pump at a certain boost level.
can all this be done?
Is it likely I could do it.
I feel I could do the basic setup of fuel and timing control, but it is the other features I am not sure about.
I know the haltech E8 can do most of this but why should I pay so much more if I can get all the same features for a fraction of the price.
Another determining factor is time, how long does it generally take to build one of these for a guy like me.
Thanks
#2
MegaSquirt Mod
88 turbo II
planned setup
750 primaries,
1600 secondaries
t61 turbo 20psi
stock ignition with msd ( would like to run individual msd coils if I could)
Greddy fmic (am thinking about an efan for this)
koyo rad
3 in single exhaust
no emissions
no ac
no ps
manual boost controller (would like to operate a boost solenoid)
wideband kit would like to record this)
egt kit ( would like to record this)
turbo timer (I have this now but would like to integrate it if possible)
Anti-lag /launch control (would like this to be integrated)
planned setup
750 primaries,
1600 secondaries
t61 turbo 20psi
stock ignition with msd ( would like to run individual msd coils if I could)
Greddy fmic (am thinking about an efan for this)
koyo rad
3 in single exhaust
no emissions
no ac
no ps
manual boost controller (would like to operate a boost solenoid)
wideband kit would like to record this)
egt kit ( would like to record this)
turbo timer (I have this now but would like to integrate it if possible)
Anti-lag /launch control (would like this to be integrated)
None of the MS firmwares can make the MS a turbo-timer.
We have boost control, although I'm working on some changes to make it easier to tune (some of the PID math is wrong).
I think we can do most if not all of what you ask for there though.
44mm waste gate
Shooting for 400whp would like to eventually make 500whp
I have some experience and am going experience with embedded controllers and c programing.
I have no problem soldering everything together.
I looked at the c code for the ms and was able to follow most of it.
Other features I am looking for are:
-automatic boost adjustment based on air temperature
-rev limiter (ignition or fuel or both)
-I would also like to send direct voltage to my secondary fuel pump at a certain boost level.
Another determining factor is time, how long does it generally take to build one of these for a guy like me.
Thanks
Thanks
If you're good at soldering, the MS + the mods to it will probably take 4-6 hrs.
Ken
#4
for the turbo timer would it be as easy as
while (ignition_switch == 0 && parking_brake == 1)
{
turbo_timer();
}
and then just create a delay function called turbo_timer that counts overflows of a clock and and while overflows is less than a certain number output 12v to the main relay of the car.
while (ignition_switch == 0 && parking_brake == 1)
{
turbo_timer();
}
and then just create a delay function called turbo_timer that counts overflows of a clock and and while overflows is less than a certain number output 12v to the main relay of the car.
#5
MegaSquirt Mod
for the turbo timer would it be as easy as
while (ignition_switch == 0 && parking_brake == 1)
{
turbo_timer();
}
and then just create a delay function called turbo_timer that counts overflows of a clock and and while overflows is less than a certain number output 12v to the main relay of the car.
while (ignition_switch == 0 && parking_brake == 1)
{
turbo_timer();
}
and then just create a delay function called turbo_timer that counts overflows of a clock and and while overflows is less than a certain number output 12v to the main relay of the car.
Also, the MS doesn't have inputs for the ignition switch or the parking brake.
Ken
Last edited by muythaibxr; 09-29-08 at 11:09 PM.
#6
MegaSquirt Mod
The MS can support any amount of power you want, just like any other standalone.
There are people running it on engines of 1200+ HP.
It doesn't matter what standalone you run as long as it puts the amount of fuel in the engine that you tell it to, and fires the spark plugs with the timing you tell it to, it'll work.
The MS (as with any other standalone) won't create horsepower for you, but if the engine setup is mechanically and physically good for 500 HP (ports are right, turbo is sized right, exhaust, injectors, etc...), then the MS with proper tuning will allow you to reach that goal just as well as any other standalone (assuming of course it was built correctly, with the proper mods, and wiring).
Ken
There are people running it on engines of 1200+ HP.
It doesn't matter what standalone you run as long as it puts the amount of fuel in the engine that you tell it to, and fires the spark plugs with the timing you tell it to, it'll work.
The MS (as with any other standalone) won't create horsepower for you, but if the engine setup is mechanically and physically good for 500 HP (ports are right, turbo is sized right, exhaust, injectors, etc...), then the MS with proper tuning will allow you to reach that goal just as well as any other standalone (assuming of course it was built correctly, with the proper mods, and wiring).
Ken
#7
I'm in rotary heaven!
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Use the nitro settings for anti lag, i had a 50 shot on my setup and it worked good. megasquirt will tell it to spray until a set manifold pressure limit is met than will shut it off and let the turbo take over, and you can run a dry shot and have megasquirt run the fuel injectors to make up for it.
If your a wrench turning computer geek megasquirt is for you!
If your a wrench turning computer geek megasquirt is for you!
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#8
Except then you'd have the MS cutting its own power... I'm not sure that would work. How would you power the transistor that controls the main relay if the transistor that controls whether the MS has power (from the main relay) is IN the MS?
Also, the MS doesn't have inputs for the ignition switch or the parking brake.
Ken
Also, the MS doesn't have inputs for the ignition switch or the parking brake.
Ken
I don't see how it wouldn't work, unless for some reason it couldn't have a hard shutdown?
Ok so your ignition switch will give the normal running power to close the relay, once the ignition switch stops giving the power (we'll forget about the parking brake for now) then it goes into the turbo_timer function which just sends power via an output to the main relay and then delays then turns that output off.
Yes it is still getting its power from the main relay but it wont be once it opens that relay.
Maybe I am thinking about this wrong or missing something obvious but it makes sense to me.
#9
The MS can support any amount of power you want, just like any other standalone.
There are people running it on engines of 1200+ HP.
It doesn't matter what standalone you run as long as it puts the amount of fuel in the engine that you tell it to, and fires the spark plugs with the timing you tell it to, it'll work.
The MS (as with any other standalone) won't create horsepower for you, but if the engine setup is mechanically and physically good for 500 HP (ports are right, turbo is sized right, exhaust, injectors, etc...), then the MS with proper tuning will allow you to reach that goal just as well as any other standalone (assuming of course it was built correctly, with the proper mods, and wiring).
Ken
There are people running it on engines of 1200+ HP.
It doesn't matter what standalone you run as long as it puts the amount of fuel in the engine that you tell it to, and fires the spark plugs with the timing you tell it to, it'll work.
The MS (as with any other standalone) won't create horsepower for you, but if the engine setup is mechanically and physically good for 500 HP (ports are right, turbo is sized right, exhaust, injectors, etc...), then the MS with proper tuning will allow you to reach that goal just as well as any other standalone (assuming of course it was built correctly, with the proper mods, and wiring).
Ken
Thanks
#10
Use the nitro settings for anti lag, i had a 50 shot on my setup and it worked good. megasquirt will tell it to spray until a set manifold pressure limit is met than will shut it off and let the turbo take over, and you can run a dry shot and have megasquirt run the fuel injectors to make up for it.
If your a wrench turning computer geek megasquirt is for you!
If your a wrench turning computer geek megasquirt is for you!
so are you saying you use nitrous as a form of anti lag instead, interesting.
I was talking about a two step rev limiter but that works too.
Also arent you worried about that blowing up... NAWWWWSSSS LOL.
#11
Engine, Not Motor
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Ok so your ignition switch will give the normal running power to close the relay, once the ignition switch stops giving the power (we'll forget about the parking brake for now) then it goes into the turbo_timer function which just sends power via an output to the main relay and then delays then turns that output off.
#13
MegaSquirt Mod
The MS gets its power from the main relay. If the MS has a transistor that's hooked to that relay determining if it gets power or not, you've got a problem. The MS won't turn on its transistor unless it has power, but it can't get power because the relay that provides it power won't turn on (since it's hooked to the transistor in the MS instead of the ignition key. You'll turn the ignition key, which will no longer switch on the main relay, which will keep the MS from getting power, which will keep the MS from turning the main relay on.
You would probably have to keep the MS powered all the time from a direct connection to the battery, but the MS was not designed to be on all the time without a running engine.
Ken
You would probably have to keep the MS powered all the time from a direct connection to the battery, but the MS was not designed to be on all the time without a running engine.
Ken
#16
Rotary Enthusiast
palm for street tuning/monitor, old laptop.
You can use all of the stock sensors on a rotary, just got to Easyterm. TPS use the newer type but even the old ones will work.
You can use all of the stock sensors on a rotary, just got to Easyterm. TPS use the newer type but even the old ones will work.
#19
I'm in rotary heaven!
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You need to keep a close eye on your AFR's when doing this, deciding on what jets to use are very important, start small and see what results you get. If your unsure of how to make megasquirt run fuel just get a foger setup. And as with any nitro application it is dangerous to some degree, just be carefull, dont take big steps, and you wont melt a rotor.
#20
yeah its a rotary
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i went with this setup for the most part and had to just buy the extra board to be able to attain the lm1815.
here is the link to the vr mock up on the proto area
http://stuff.pw.cx/Megasquirt%20MS2%...azda%20CAS.pdf
and the lm1815 board as to which i am doing instead of building it on the proto area. which you dont have to do it this way. its just another way at looking at it . they all work one in the same.
http://www.jbperf.com/dual_VR/index.html#Buy
#21
Thanks for that pdf it was very informative.
you said you had to buy an extra board to attain the lm1815
Are you saying you bought some extra board and took the lm1815 off of it and you are putting that IC on the extra vr board you are buying?
Im just a bit confused, cant you just buy the lm1815 and either build it in the proto area or build it on the extra vr board?
you said you had to buy an extra board to attain the lm1815
Are you saying you bought some extra board and took the lm1815 off of it and you are putting that IC on the extra vr board you are buying?
Im just a bit confused, cant you just buy the lm1815 and either build it in the proto area or build it on the extra vr board?
#22
Rotary Freak
iTrader: (1)
Yea, you can buy the LM1815 and build the circuit for it in the prototype area. This is how I have mine set up. Conversely, you can buy the LM1815 and that board (if you're using a V3.0 megasquirt PCB - the blue one - you only need half that board), and that gives you all the specific traces and locations for all the ancillary components. However, this other board does NOT come with the LM1815; you need to buy that separately through digikey or some other electronics supplier.
#24
MegaSquirt Mod
Ken