Engine Management eCtune , Crome , AFC , FMU , Zdyne , Hondata , EMS , TE , Uberdata Anything to control your fuel, spark needs!

390cc injectors

Old 08-04-2003, 10:53 PM
  #1  
3.0 BAR
Thread Starter
 
Join Date: Jun 2003
Posts: 6,863
Default 390cc injectors

Would 390cc injectors work with a v-afc hack.Im wondering becouse most the settings Ive seen posted for the 450s are for minus 38-40%.So that means that the injectors are pushing about 410cc or so.Annyboady running 390 cc from an automatic DSM turbo.It seems some people are having trouble with there 450s still running too rich.Im only going to be boosting 6-7 pounds in my Z6(no really!).I have a fields v-afc i want to use as a hack but it only does +/-30%.WADDAYA THINK?

Rafael
d16forlife is offline  
Old 08-05-2003, 02:49 AM
  #2  
1.0 BAR
 
Join Date: Dec 2002
Posts: 381
Default Re:390cc injectors

I have 390's and am having that exact problem. no one uses them on here so i cant compare SAFC settings. I am just going to buy some 450's when i get round to it....
390s should be ok u just put it to like -20% across the board. I just got ---- loads of smoke when i started mine.
djnikko is offline  
Old 08-05-2003, 09:43 AM
  #3  
3.0 BAR
 
Join Date: Apr 2003
Posts: 2,260
Default Re:390cc injectors

Ok bois, the 390cc will work fine.. the reason people use 450cc is that they are readily available.

Let this concept marinate in your mind for a bit.. Personally, I use 450ccs, and at idle, I lean to -38%. OK, you're flowing 60cc less than I am per pusle of your injector, which is 13% difference. This means, to get the the SAME amount of fuel, you would have to scale your MAP signal LESS than I do (to put you at a richer part of your fuel map).

What's this mean? That instead of -38%, we add 13% (to compensate for the difference) and you get -25% for idle..

So, what have we learned here? 450cc injector flow 13% more fuel pur pulse than 390cc, so you ADD 13% to 450cc settings, and that should set you right for 390cc injectors... got it?
TurboEF9 is offline  
Old 08-05-2003, 05:40 PM
  #4  
3.0 BAR
Thread Starter
 
Join Date: Jun 2003
Posts: 6,863
Default Re:390cc injectors

Thanks turboEF9.Thats the answer Ive been looking for for a while.I know my Fields is not as versatile as the Apexi hack but for now it seems it will work.
d16forlife is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Xplocivic
Turbo Parts For Sale
13
11-15-2003 10:29 PM
cornbread
Turbo Parts For Sale
19
09-13-2003 11:38 AM
djnikko
Engine Management
5
07-30-2003 09:52 AM
Platty9
Turbo Parts For Sale
0
07-25-2003 12:37 PM
djnikko
Engine Management
4
07-22-2003 07:44 PM


Thread Tools
Search this Thread
Quick Reply: 390cc injectors


Contact Us - Sitemap - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.