Notices
General Miata Chat A place to talk about anything Miata

ME221 Mx5 Na 1995 Wont Start

Thread Tools
 
Search this Thread
 
Old Jan 26, 2017 | 12:52 PM
  #21  
shuiend's Avatar
mkturbo.com
iTrader: (24)
 
Joined: May 2006
Posts: 15,235
Total Cats: 1,700
From: Charleston SC
Default

Originally Posted by ridethecliche
I'm interested to see what FM says about the ground issue. If they sell that system and something happens, wouldn't they have some liability? I also can't see them selling something like that since it's unsafe at some level?

Maybe I'm just too optimistic...
​​​​​​​According to the FM221 spec sheet theirs does control the FP. I have read a few things online saying the ME221 should control it, possibly a jumper inside.
Old Jan 26, 2017 | 12:57 PM
  #22  
SchmoozerJoe's Avatar
Senior Member
iTrader: (2)
 
Joined: Aug 2013
Posts: 746
Total Cats: 85
From: Houston, TX
Default

IIRC one of the wires/diodes I soldered on the earlier boards in Colorado was to address this.
While I have no idea what the current FM221 board does, I do know there were many updates/etc. that we made to the ME221 boards over the development period.

My guess is that the OP has one of the earlier ME221 boards, which doesn't quite match the current/documented specs.
I believe there were two or three diodes/jumper wires that were needed, and that was over six months ago.
Old Mar 21, 2017 | 09:07 AM
  #23  
Matt Thorne's Avatar
Bannisheded
 
Joined: Mar 2017
Posts: 21
Total Cats: -107
Default

Originally Posted by Braineack
its only dangerous if you run into a tree, really.



If your ECU cant activate a fuel pump, it shouldn't be installed in your car. I remember these guys could barely wrap their heads around the DIYPNP and then they go and developed this gem. I honestly feel bad for ME221 and FM221 users.
It can indeed drive the Fuel Pump as documented in the manual - the 1995 is X-over year to the 1.8, so before that the AFM did the hard work - simply linking one wire to a spare low side driver of the ECU will give full FP control like all the other PnP ranges...

[QUOTE=Braineack;1388812]If your ECU cant activate a fuel pump, it shouldn't be installed in your car. I remember these guys could barely wrap their heads around the DIYPNP and then they go and developed this gem. I honestly feel bad for ME221 and FM221 users.

Its a shame all of the UK tuners and now the biggest in the US all use an ME221 based ECU as opposed to a megasquirt based one - the argument of wrapped your head around DIYPNP is exactly its faults - people want an ECU that works, not one that requires a software engineering degree to get running - thats probably why MS fails, well that and its terrible engineering - if you're going to make the code opensource at least *try* to code it to a relatively decent standard.... thats why I feel sorry for all the MS users....




All times are GMT -4. The time now is 03:25 PM.