'99 Needs a turbo - MS-I or MS-II?
Hi all,
I'm looking at engine management for a future turbo installation. Before I moved to California, I had planned to install an MS-I with an NA CAS in parallel with the stock ECU. This was to give me OBD-II for emissions (set it and forget it). I have all the parts, and the wiring in place, but I haven't installed the sensors or physically mounted the Megasquirt. Now I'm in California, and have CARB issues to consider. I'm trying to decide how to approach engine management, given this new constraint. Two of my options involve Megasquirt.
I'm also considering CARB EO legal options, or legal enough options, but for the purposes of this thread, assume I'll be switching back to stock on emissions days. |
Get the MS-2. Due to better fueling precision of the MS-2 and the ability to be in closed-loop at idle, you will have far better chances of passing OBD and tail-pipe sniffer tests.
Dimitris |
you need the MS-II in order to read your cam and crank sensors.
|
I believe I have all the parts for an MS-1 in a parallel install (such as a 1.8l NA CAS).
Is it worth it to sell this kit off and buy the shiny new stuff? |
buy the ms-ii chip and run it parallel as well?
|
What kind of effort are we talking about? I bought my MS pre-assembled at DIYAutoTune. I imagine that going with the MS-II isn't as simple as swapping a chip.
Considering that I already have the MS-I setup, what would motivate me to go with the MS-II? |
Originally Posted by dillononthecoast
(Post 568798)
What kind of effort are we talking about? I bought my MS pre-assembled at DIYAutoTune. I imagine that going with the MS-II isn't as simple as swapping a chip.
Considering that I already have the MS-I setup, what would motivate me to go with the MS-II? |
its a little more than that, but basically...
|
I'd probably sell this one and buy/build a replacement, as long as the cost wasn't outrageous.
That aside, it sounds like the advantages are AC & alternator control + the ability to read NB sensors. Since I've got the NA CAS, and a parallel install takes care of AC & alternator, is there a strong reason to move to MS-II? |
I've been reading all the NB MS-I and MS-II threads I could find, and this is my take.
MS-II:
MS-I:
Some people (AbeFM) seem to really hate the NA CAS option. I've got the parts and was planning on going down this route. How serious of an issue is it? |
Originally Posted by dillononthecoast
(Post 570267)
I've been reading all the NB MS-I and MS-II threads I could find, and this is my take.
MS-II:
Dimitris |
I see. When I read the article, I assumed those mods were included.
In my case I'll likely install in parallel and let the stock ECU deal with all that. |
While a parallel installation seems to work best, there are a few problems here and there. I had wild idle oscillations when I had the A/C activated during idle, or when I had major electrical loads also applied during idle (heated rear window and mirrors, heated seats, high beams, etc). I never managed to solve them while I was running in parallel.
Dimitris |
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