Originally Posted by wayne_curr
(Post 321474)
Oh, another question for those of you who wired the db37 directly into the car instead of using the tyco connector...
What crimp connectors did you use? In the past with alarm installs i've used T-Taps on the factory wires to get a connection. Should I use something better/more robust for these connections? |
Am I still going to be able to use the mspnp 9093 .msq with the HR code? Are all the settings the same for idle etc? I flashed it to the ms last night and I think I may take a stab at installing this shiz today.
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Truthfully, I don't know if the actual MSQ itself will be portable from lorez to hirez (I never tried it) however the vast majority of the tables and settings will work just fine. Idle, spark, cranking, warmup, etc should all be 100% correct. In my experience, VE will require some slight tweaking, but I emphasize slight- well within MLV's capabilities.
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Ok, my level of confusion is growing now that i'm on Hires.
My required fuel calculator is throwing me off as well as the constants page. It keeps changing back to a 350CID engine with 42lb/hr injector flow. What should my settings be on engine constants and req fuel? |
2 Attachment(s)
Originally Posted by Joe Perez
(Post 321482)
A small, token prize to the person who identifies all the different types of wiring devices that I used:
http://www.boostedmiata.com/MS/harness/direct_db37.jpg By way of meekly defending this mess, I'll note that I'd previously had an EMU in here, so any wire which had previously been tapped or cut for that simply got re-used. There are a few connectors hanging with nothing plugged into them- those were connections made for the EMU that weren't needed with the MS. Attachment 210459 Attachment 210460 Answer: There's large butt connectors for the +12V wires where they go into the fuse holder. And a couple others. But 97% is soldered and heat shrinked. Try opening Megatune, opening a known good MSQ, and then setting the constants you speak of, then close, then save. Reopen and see if they changes took effect. |
The calculator has no bearing on actual operation. It's just a tool to help you figure out the correct value to put into Req_Fuel. And yes, it resets itself every time you close it.
The Req_Fuel constant should not change much when switching between regular and HR code. Thus, assuming stock injectors I'd keep it at the stock DIY setting. For your 1.6, that would be 13.4. The same goes for the rest of the engine constants. Start with the DIY values. Unless you've changed the injectors already, any tweaks to the defaults will be minor for now. http://img02.picoodle.com/img/img02/...sm_3772c4e.gif |
I've changed all the settings to the DIY ones as outlined on their writeup. I've made sure my constants reflect the above. There still seem to be lots of menus with things that I haven't changed but i'll follow JP's advice and leave them be.
I guess i'm ready to start wiring things up. Brain's diagram of the Miata ECU harness with the callouts is only for paralell i assume. It seems to have several fewer callouts than wires that i'll need to splice in. What should I be following for wiring the pigtail into the stock harness? Also, should I wire up the WB initially or get it to idle with the NB first before introducing too many questionmarks to the process? As for grounding, do I just run all the ground wires through the firewall to the valve cover directly? |
Originally Posted by wayne_curr
(Post 321894)
There still seem to be lots of menus with things that I haven't changed but i'll follow JP's advice and leave them be.
What should I be following for wiring the pigtail into the stock harness? Assuming you built your MS essentially to Brainey's specs (in terms of pinout) then you can wire it the same way as he calls out. It doesn't matter, for instance, if you splice into a line rather than cutting said line if there's no ECU on the other end of the harness. Quite a few connections on my harness are tapped rather than cut, for no other reason than that they were tapped back when I had an EMU, and now it doesn't matter since the ECU is gone anyway. Also, should I wire up the WB initially or get it to idle with the NB first before introducing too many questionmarks to the process? As for grounding, do I just run all the ground wires through the firewall to the valve cover directly? Well, not the valve cover itself, but the main grounding point in the rear section of the head. (or is it the IM... I honestly can't remember where those bolts are...) |
Originally Posted by Joe Perez
(Post 321949)
Sorry, I didn't mean to imply that nothing else needs changing from a "bare" MSQ- lots of stuff in fact needs congifuring. Cranking, warmup / ASE, idle control (two pages' worth), some outputs, etc. What I am saying is that for starters, you can use the base maps (.MSQ file) that DIY distributes with the MSPNP: http://megasquirtpnp.com/mspnp_downloads.htm
Originally Posted by Joe Perez
(Post 321949)
Ideally, your own notes made while looking at a copy of the factory service manual's wiring diagram. :D
Assuming you built your MS essentially to Brainey's specs (in terms of pinout) then you can wire it the same way as he calls out. It doesn't matter, for instance, if you splice into a line rather than cutting said line if there's no ECU on the other end of the harness. Quite a few connections on my harness are tapped rather than cut, for no other reason than that they were tapped back when I had an EMU, and now it doesn't matter since the ECU is gone anyway.
Originally Posted by Joe Perez
(Post 321949)
The WBO2 should be installed and working before the MS goes in.
Originally Posted by Joe Perez
(Post 321949)
Yup.
Well, not the valve cover itself, but the main grounding point in the rear section of the head. (or is it the IM... I honestly can't remember where those bolts are...) Last question for awhile... I wired up my fans mod like in the writeup, which pin is that going to come out of on the DB37? |
Give the DIY MSQ a shot. I can't think of any reason why it would not work, I just can't say for certain that it will.
IAC2A is pin 29. |
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