Miata 1992 megasquirt - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 03-18-2010, 08:34 AM   #1
Newb
Thread Starter
 
Join Date: Feb 2010
Posts: 4
Total Cats: 0
Default Miata 1992 megasquirt

Hi there!My miata is a 1992 model.My engine is a 1,8L but is running with the 1,6L ecu,throttle body and 1.6 wiring harness too.I want to install the megasquirt pnp unit.I should install the 1,8L throttle body am i right?I dont know the year model of my engine is this a issue?Autotune said to me install the 96-97 settings on megasquirt.The install progress is a little bit different between 1,6 and 1,8 engines.Example in 1,6 engine we remove the 10amp fuse but on the 1,8 engine no what i have to do?Could you tell me what i have to pay attetion at the installation progress of my megasquirt?

I really appreciate your help!!Thanks! Sorry for bad english.
Noisen is offline   Reply With Quote
Old 03-18-2010, 09:18 AM   #2
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

You match the model ECU that matches your wiring.

you remove the ST_SIG fuse because for the 90-93 application the AFM triggers the fuel pump with the flapper it opened (when you crank the motor, the vacuum opens the flapper and turns on the pump). So they back-feed 12v to a relay which can then activate the fuel pump relay, but you must remove that fuse or you can will fry the ECU.
Braineack is offline   Reply With Quote
Old 03-18-2010, 09:25 AM   #3
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

Quote:
Originally Posted by Braineack View Post
[Y]ou must remove that fuse or you can will fry the ECU.
Well, you fry a transistor at least. The ECU will still work, but you'd need to jump the fuel pump pins in the diagnostic connector for the car to run.

But Brainy is right--you'd want the 1.6 set up, remove the ST SIG fuse, and have at it. You can install the 1.8 tbody to the motor again (you may need connector pigtails to splice into your harness), and if you do the variable TPS mod to your ECU, you can use the 1.8 TPS.
Ben is offline   Reply With Quote
Old 03-18-2010, 12:51 PM   #4
Newb
Thread Starter
 
Join Date: Feb 2010
Posts: 4
Total Cats: 0
Default

Thanks a lot for your help!Is something else that to pay attetion?
Noisen is offline   Reply With Quote
Old 03-18-2010, 02:01 PM   #5
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

It's really pretty straight forward. It would be a good idea to read through the MSPNP documentation, but I think you are off to a good start.
Ben is offline   Reply With Quote
Old 03-18-2010, 06:59 PM   #6
Newb
Thread Starter
 
Join Date: Feb 2010
Posts: 4
Total Cats: 0
Default

Thanks again!!
Noisen is offline   Reply With Quote
Old 03-19-2010, 02:39 AM   #7
Elite Member
iTrader: (6)
 
Join Date: Nov 2007
Location: Southlake,Texas
Posts: 3,251
Total Cats: 17
Default

Where are you from guy
Bond is offline   Reply With Quote
Old 03-19-2010, 10:21 AM   #8
Newb
Thread Starter
 
Join Date: Feb 2010
Posts: 4
Total Cats: 0
Default

Im from Greece.
Noisen is offline   Reply With Quote
Old 03-19-2010, 12:53 PM   #9
Junior Member
iTrader: (5)
 
Join Date: May 2006
Location: San Francisco Bay area
Posts: 359
Total Cats: -1
Default

no way..crap. So MS9495 will not work for my 1992 Miata with 94 1.8L block+ 99 head?
aznDragonX is offline   Reply With Quote
Old 03-19-2010, 01:30 PM   #10
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

Quote:
Originally Posted by aznDragonX View Post
no way..crap. So MS9495 will not work for my 1992 Miata with 94 1.8L block+ 99 head?
If you have the 1.6 harness, then you want the 9093 ECU.

The 9495 can be made to work in your 92, but it would take a good effort to do so. Certainly would no longer be plug and play.
Ben is offline   Reply With Quote
Old 03-19-2010, 01:52 PM   #11
Junior Member
iTrader: (5)
 
Join Date: May 2006
Location: San Francisco Bay area
Posts: 359
Total Cats: -1
Default

Ben, thanks for clarify. Now I feel like a dumb *** since I sold my MS9093 to get 9495 thinking I'll need it for my 1.8L swap.
aznDragonX is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
3rd Time's a Charm...hopefully. zephyrusaurai Meet and Greet 2 09-28-2015 11:59 PM
Missing/knock at idle, can someone point me in the right direction? Mikel MEGAsquirt 4 09-28-2015 05:46 PM
VR6 to Miata Swap ScrapinMX5 Meet and Greet 8 09-28-2015 02:04 PM
First Miata Rhidell Meet and Greet 1 09-27-2015 10:42 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:22 AM.