optimal injector opening time? - Miata Turbo Forum -Boost cars, acquire cats.

Welcome to Miataturbo.net   Members

MEGAsquirt A place to collectively sort out this megasquirt gizmo

LinkBack Thread Tools
Old 12-11-2009, 12:48 AM   #1
Junior Member
Thread Starter
Join Date: Aug 2006
Location: Cedar City, UT
Posts: 220
Total Cats: 4
Default optimal injector opening time?

cross posted to the rx7 forums about the same thing since the injectors are originaly from one of those cars:

injector opening time - RX7Club.com

what im wanting to really understand, is how is this figured out, and what happens if you use too much or not enough opening time?

i currently have my injector openign time set to 1.1ms

I am not understanding if this time is how long it takes the injector to go from full close to full open, and then it is doubled when the injector reverses, so a total of 2.2 in my case Or is this the time that is takes to go from close to full open and back to full close, or make the complete cycle?

I have tred to change it before and i understand how it effected my entire tune, but i would like clarifacation on how the optimal time is set and why it would be that way

i think the diy maps had it set for 1.1, but im sure that worked well with the stock injectors
Dlaitini is offline   Reply With Quote
Old 12-11-2009, 01:54 AM   #2
Senior Member
Join Date: Mar 2006
Location: Schwarzenberg, Germany
Posts: 1,468
Total Cats: 75

For the 460CC high imp RX-7 injectors I found ~1.2ms to be the value (with MS2 its 1.185 for me) I found the value through switching from 2 to 4 squirts an back - if you get the same AFRs at idle for both you have the correct value.

keep in mind - it's " injector dead time" not only opening time - it's in fact opening+closing time.

Zaphod is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
WTB; na6 Miata things (Canada) Jared Rowe WTB 0 09-23-2015 11:57 AM
Interpreting Deatchwerks Dead Times from Battery Wizard compuw22c MEGAsquirt 0 09-14-2015 06:08 PM
Innovate LC-2 Wideband O2 Sensor w8lifter21 Miata parts for sale/trade 0 09-14-2015 11:30 AM
VE values too low? compuw22c MEGAsquirt 4 09-12-2015 07:42 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 On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 05:21 AM.