MS with 360cc injectors what level of boost? - 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 10-14-2008, 10:03 PM   #1
Junior Member
Thread Starter
 
Join Date: Mar 2006
Location: Sydney Australia
Posts: 138
Total Cats: 0
Default MS with 360cc injectors what level of boost?

Gents

At present the MS is controlling a T25 on can levels of boost (6psi with 7.5psi spikes) using the stock 1.6 injectors (which according to FAQ are 230cc).

I have some GTX injectors which by the serial number are listed as 360cc in the FAQ.

My goals are to get to 9psi EBC with the MS, would this be a safe target, given that I just meet 12.1 on the wideband at standard boost levels using the stock injectors?

The setup is a HKS mani and t25 41/49 (tiny) with a custom d/p and 2.5 inch exhaust.

Now calculating Req Fuel what AFR should be used? I thought there was mention a while back that DYI uses 14.0 for the AFR rather than 14.7
Is this crucial? (probably not since MLV will tune the difference out)
ampz is offline   Reply With Quote
Old 10-14-2008, 10:11 PM   #2
Senior Member
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

Quote:
Originally Posted by ampz View Post
Gents

At present the MS is controlling a T25 on can levels of boost (6psi with 7.5psi spikes) using the stock 1.6 injectors (which according to FAQ are 230cc).

I have some GTX injectors which by the serial number are listed as 360cc in the FAQ.

My goals are to get to 9psi EBC with the MS, would this be a safe target, given that I just meet 12.1 on the wideband at standard boost levels using the stock injectors?

The setup is a HKS mani and t25 41/49 (tiny) with a custom d/p and 2.5 inch exhaust.

Now calculating Req Fuel what AFR should be used? I thought there was mention a while back that DYI uses 14.0 for the AFR rather than 14.7
Is this crucial? (probably not since MLV will tune the difference out)
WIth good tuning, the afr for req fuel shouldn't matter. This is just a "starting point" for the fuel map. As far as how much boost you can run, tune it and keep your afr's in check. Slowly turn up the boost while tuning the new cells you are in. Keep an eye on your injector duty cycle. If you can keep your afr's where they need to be and keep the duty cycle for the injectors below 80%, then it will be fine.
wes65 is offline   Reply With Quote
Old 10-14-2008, 10:52 PM   #3
Elite Member
iTrader: (21)
 
paul's Avatar
 
Join Date: Jun 2006
Location: Point Pleasant, NJ
Posts: 2,957
Total Cats: 2
Default

360's are safe till about 200 crank hp. http://www.rceng.com/technical.aspx
paul is offline   Reply With Quote
Old 10-14-2008, 11:18 PM   #4
Junior Member
Thread Starter
 
Join Date: Mar 2006
Location: Sydney Australia
Posts: 138
Total Cats: 0
Default

Thank you for the replies. It looks like I'm safe
Good link Paul that explained quite a bit.
Cheers
Nuno
ampz is offline   Reply With Quote
Old 10-15-2008, 10:52 AM   #5
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

I was able to achieve 100% DC on 305cc injectors at 6psi (around 160-170rwhp).
Braineack is offline   Reply With Quote
Old 10-15-2008, 12:23 PM   #6
Elite Member
iTrader: (21)
 
paul's Avatar
 
Join Date: Jun 2006
Location: Point Pleasant, NJ
Posts: 2,957
Total Cats: 2
Default

you say it as if it's some kinda of feat.
paul is offline   Reply With Quote
Old 10-15-2008, 12:50 PM   #7
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

Behold the limits of small injectors!!!!!
Braineack is offline   Reply With Quote
Old 10-16-2008, 01:29 PM   #8
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,327
Total Cats: 1,926
Default

Yeah? well I was able to achieve 102% DC on my 440s, so there!
Joe Perez is offline   Reply With Quote
Old 10-16-2008, 01:32 PM   #9
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

Quote:
Originally Posted by Joe Perez View Post
Yeah? well I was able to achieve 102% DC on my 440s, so there!
I have yet to learn...only hitting 85.7% on my 460s. failure.
Braineack is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
Changing from 460cc to flow force 610cc in diypnp 90 Turbo MEGAsquirt 19 10-19-2015 04:23 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 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 08:19 AM.