anybody looking at ms3??

[yunvmyegt]

well the first miata is now running on ms3, ive thaught about getting the ms2 upgrade, but i may just skip it now.... anybody else thaught about this yet? the fuel and spark tables alone are just that much bigger too, 16x16 now...

heres a link to the site, http://ms3efi.com/product.html

Features:
(Based on full featured MS3+MS3X+V3.57)
Speed-density, alpha-n or MAF for fuelling calculations
16x16 fuel tables in 0.1% steps with true interpolation and movable rows/columns
16x16 spark tables in 0.1 degree steps with true interpolation and movable rows/columns
Wall-wetting transient fuel control for better driveability
On board datalogging to SDcard (max 333Hz sample rate)
Tuning by serial or built-in USB-serial port.
8 channels sequential fuel (hi-z injectors or low-z with external resistors)
2 additional fuel channels (hi-z or low-z)
8 channels sequential spark (logic level output)
6 channels mid current output for small solenoids or relays
2 'spare' conditioned 0-5V analogue inputs (+2 more raw)
Two wideband oxygen sensor input (external controller required)
(Up to eight widebands supported via external data capture)
GM-style stepper idle control
2 and 3 wire PWM idle control
Closed loop idle control
Closed loop mixture control - ideally with wideband
Closed loop boost control
Various boost control systems (gear, time, speed based)
Two stage variable nitrous control
2 step type launch control
CAN communications to interconnect other Megasquirt products e.g. transmission controller
Supports external data capture boards (e.g. for external EGT boards)
EGT data support (with external amplifier)
Staged injection
Dual fuel (e.g. LPG)
Table switching, (mainly for dual fuel use)
Water/Meth injection
Individual cylinder injector trim
Injector phase timing
Individual cylinder spark trim
Support for numerous OEM trigger wheel patterns.
Magnetic (VR), Hall, Opto crank sensor input
Magnetic (VR), Hall, Opto cam sensor input


so , any thaughts/input on this?

[Lex]

When you consider an ECU, think of it as a tool - and think of what your use for this tool is. In other words - how is the MS3 going to run your car better than the MSI or MSII?

There are some niceties such as the SD card logging (although useless without a computer anyways), the USB port, the sequential injection, boost control.

However, in terms of actually simply running the BP motor (with 700cc injectors or smaller) there is little advantage in upgrading the processor.

I would wait until they have a stable firmware. Since the MS is open-source-ish there are bugs and the later versions of firmware are worth waiting for.

I am considering the MSIII in one of our future projects ... we'll see where things go in terms of requirements.

[yunvmyegt]

ya i wouldnt buy anything that just came out, its something to think about for over next winter maybe.... i just figure if its better than ms2 at controlling things why not, itll either be ms2 or ms3 next winter tho... ill probably do the map sensor in the next few weeks just to have the baro correction, aside from soldering a few connections its not too hard really....

[Crazy Drummer69]

The new boost control methods and dual fuel maps really interest me. With MSIII I can program it to allow light boost in first and second gear like the MS3, and full boost for the others. I can also set it to only fully boost when I'm WOT to make street driving easier. Plus the pump gas/race gas fuel tables will be plenty useful.