MEGAsquirt A place to collectively sort out this megasquirt gizmo

MS with 360cc injectors what level of boost?

Thread Tools
 
Search this Thread
 
Old 10-14-2008, 09:03 PM
  #1  
Junior Member
Thread Starter
 
ampz's Avatar
 
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  
Old 10-14-2008, 09:11 PM
  #2  
Senior Member
iTrader: (7)
 
wes65's Avatar
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,369
Total Cats: -1
Default

Originally Posted by ampz
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  
Old 10-14-2008, 09:52 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  
Old 10-14-2008, 10:18 PM
  #4  
Junior Member
Thread Starter
 
ampz's Avatar
 
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  
Old 10-15-2008, 09:52 AM
  #5  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,490
Total Cats: 4,079
Default

I was able to achieve 100% DC on 305cc injectors at 6psi (around 160-170rwhp).
Braineack is offline  
Old 10-15-2008, 11:23 AM
  #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  
Old 10-15-2008, 11:50 AM
  #7  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,490
Total Cats: 4,079
Default

Behold the limits of small injectors!!!!!
Braineack is offline  
Old 10-16-2008, 12:29 PM
  #8  
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,019
Total Cats: 6,587
Default

Yeah? well I was able to achieve 102% DC on my 440s, so there!
Joe Perez is offline  
Old 10-16-2008, 12:32 PM
  #9  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,490
Total Cats: 4,079
Default

Originally Posted by Joe Perez
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  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
84
04-12-2021 04:21 PM
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM
90 Turbo
MEGAsquirt
19
10-19-2015 03:23 PM
Trent
WTB
2
10-01-2015 12:15 PM
The Gleas
MEGAsquirt
3
10-01-2015 09:30 AM



Quick Reply: MS with 360cc injectors what level of boost?



All times are GMT -4. The time now is 07:42 PM.