Upgrading MS1 to MS2.
#23
Boost Czar
![](/mt2011/images_td/ranks/supporter1.gif)
![](/mt2011/images_td/ranks/admin.png)
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,688
Total Cats: 4,113
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I've been DDing the firmware since March. I'm not even on the latest firmware as it's mostly to fix random things we'll never deal with and some communications issues I never see. The only thing they are really working on before the v1.0 release, which should be ready very soon, is fixing communications errors.
for example, here's the latest firmware updates:
Changes since 0.26
Increase range for map sampling.
Internal ReqFuel logic fixed for no. squirt / injectors etc.
Semi-seq didn't work correctly with cam speed trigger wheel or dual+missing.
Add config error for impossible sequential.
Merge in PW4X changes. (Allows code to generate larger pulsewidths for low-revving large engines.)
Allow up to 255% VE.
Fix many ini errors detected with Megatune parser.
SD card work. Initialises ok on three previously non-working cards. Tested ok on eight cards here.
for example, here's the latest firmware updates:
Changes since 0.26
Increase range for map sampling.
Internal ReqFuel logic fixed for no. squirt / injectors etc.
Semi-seq didn't work correctly with cam speed trigger wheel or dual+missing.
Add config error for impossible sequential.
Merge in PW4X changes. (Allows code to generate larger pulsewidths for low-revving large engines.)
Allow up to 255% VE.
Fix many ini errors detected with Megatune parser.
SD card work. Initialises ok on three previously non-working cards. Tested ok on eight cards here.
#27
Boost Czar
![](/mt2011/images_td/ranks/supporter1.gif)
![](/mt2011/images_td/ranks/admin.png)
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,688
Total Cats: 4,113
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
then go MS3, with the expander board it's crazy easy.
you pretty much select seq. fuel, tell it to output through the ms3x, and then simply connect the 4 injector outputs to your harness. done.
you pretty much select seq. fuel, tell it to output through the ms3x, and then simply connect the 4 injector outputs to your harness. done.
#29
Elite Member
iTrader: (1)
Join Date: Jun 2006
Location: Warrington/Birmingham
Posts: 2,642
Total Cats: 42
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Not if you don't want to and yes they can, but if you want sequential you want to use the drivers on the MS3X as you need 4 identical drivers.
You could use the V3 injector drivers to drive anything else PWM though like a WI valve or a 5th injector etc etc
You could use the V3 injector drivers to drive anything else PWM though like a WI valve or a 5th injector etc etc
#31
Boost Czar
![](/mt2011/images_td/ranks/supporter1.gif)
![](/mt2011/images_td/ranks/admin.png)
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,688
Total Cats: 4,113
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
you don't need the expansion board, it just makes life easy when you need 4 spark and fuel drivers.
for a while I was running just the ms3 cpu on my mainboard...all i had to do was lift off the MS-II and swap on the MS-III, flash and load my ms-II map.
When the MS3X was released, I modified my injector and cop harness to run full sequential out the ms3x board. the mainboard still has the tach and other circuits like the a/c, fan, clutch switch, etc.
#35
Elite Member
iTrader: (1)
Join Date: Jun 2006
Location: Warrington/Birmingham
Posts: 2,642
Total Cats: 42
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
pretty much everything on the left hand side of Brain's image isn't strictly required.
MS3 has it's own on-board USB communications, the LED's, well they're really not that useful. so that leaves power supply.
Madness.
MS3 has it's own on-board USB communications, the LED's, well they're really not that useful. so that leaves power supply.
Madness.
#37
Elite Member
iTrader: (1)
Join Date: Jun 2006
Location: Warrington/Birmingham
Posts: 2,642
Total Cats: 42
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I doubt it, the license part of MegaSquirt is bought when you buy a mainboard.
uS contains it's own license.
At least that's how I understand it.
You're not losing out though, everything the V3 board offers can still be used (VR/Hall sensor inputs, 2 injector drivers, PWM Idle driver 1 high current ignition driver etc.
uS contains it's own license.
At least that's how I understand it.
You're not losing out though, everything the V3 board offers can still be used (VR/Hall sensor inputs, 2 injector drivers, PWM Idle driver 1 high current ignition driver etc.
#39
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
That one has all the RPM inputs deleted, so you'd need some sort of external conditioner for the crank input. It's also missing the injector drivers, so it would not be suited for a buildup without the MS3X board.
A single consolidated board is likely to happen - and would add some of the improved circuits that have been talked about here plus some new ones you haven't seen. It would, however, probably be SMD-only.
A single consolidated board is likely to happen - and would add some of the improved circuits that have been talked about here plus some new ones you haven't seen. It would, however, probably be SMD-only.
Thread
Thread Starter
Forum
Replies
Last Post
Frank_and_Beans
Supercharger Discussion
13
09-12-2016 08:17 PM