Base map for 1.8 swap - 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 04-30-2016, 01:25 AM   #1
Senior Member
Thread Starter
iTrader: (1)
 
wackbards's Avatar
 
Join Date: Nov 2015
Location: Seattle
Posts: 607
Total Cats: 63
Default Base map for 1.8 swap

I'm about to swap a 94 1.8 into my 91, and I'm not sure whether I should start with a 1.6 base map, or a 1.8 base map. Does it even matter? Here are some details:
1991 car/harness
DIYPNP 90-93 ECU
Wired for sequential injection
Retained the 1.8 TB with oem VTPS
coils rewired for 1.8
1.6 thermo sesors retained
AFM deleted
Flowforce 610 injectors
wackbards is offline   Reply With Quote
Old 04-30-2016, 11:35 AM   #2
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,105
Total Cats: 518
Default

You'd want a basemap for your 91.

Change required fuel to compensate for your 1.8 and larger injectors, the mod for the VTPS should be in the MS hardware, and tell it you have sequential injection. The MS is only sending out a ground signal for the coils, so it doesn't care what coils are using that signal. 90-00 (even 01-05) coils are close enough to each other to use the same dwell even.
curly is offline   Reply With Quote
Old 04-30-2016, 04:03 PM   #3
Junior Member
 
Join Date: Oct 2015
Location: Stockholm, Sweden
Posts: 70
Total Cats: 9
Default

Wouldn't it be better to get the VE/fuel/ignition tables from a 1.8 basemap? Or are they the same?
jstck is offline   Reply With Quote
Old 04-30-2016, 04:42 PM   #4
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,105
Total Cats: 518
Default

They're roughly the same VE, so yes same fuel table.
curly is offline   Reply With Quote
Old 05-01-2016, 04:03 AM   #5
Senior Member
Thread Starter
iTrader: (1)
 
wackbards's Avatar
 
Join Date: Nov 2015
Location: Seattle
Posts: 607
Total Cats: 63
Default

Thanks Curly. I'll see if I can get this puppy up and running. I'm pretty new to MS tuning.
wackbards is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
AEM EMS4 96-97 base map anyone? sharkycarlos AEM 3 10-15-2016 09:46 AM
1991 C Street Prepared Autocross Miata - $12,000 - In Arkansas Red91 Cars for sale/trade 1 05-30-2016 07:43 PM
MAP sensor reading ~97 kPa all the time Joseph Conley MEGAsquirt 32 04-29-2016 02:11 PM
Injectors 255cc for 1.8, Billet shift knob Windows95 Miata parts for sale/trade 1 04-23-2016 02:50 AM
1.8 Miata Rear Diff Swap Needed boriicuaz Miata parts for sale/trade 1 04-18-2016 01:44 PM


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 09:55 PM.