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

Help with P28 and AFC

Old 10-14-2006, 11:58 AM
  #1  
0.0 BAR
Thread Starter
 
Join Date: May 2006
Posts: 39
Default Help with P28 and AFC

Ok so I read the FAQ which was full of info, that got me thinking. I was trying to tune my VAFC last night and all of a sudden it the ECU went into LIMP mode and wouldn't rev past like 2500. In the FAQ it mentions that the ECU will throw a code if the MAP signal reaches 3.1volts. My P28 all of a sudden started throwing a code 4 which is Crankshaft position sensor. Which is complete BS because the car ran perfect then it just threw it for no reason. My MAP sensor is pulling vaccuum from the back of my intake manifold, could this be a problem? Should I install 2 or 3 check valves or something? Any ideas why my P28 would just go into LIMP?
Thanks guys!
CO_CReX is offline  
Old 10-14-2006, 04:02 PM
  #2  
3.0 BAR
 
Join Date: May 2004
Posts: 5,049
Default Re: Help with P28 and AFC

It got you thinking of that entire scenario what an imagination.

So you are messing with the AFC and you throw a code? amazing.

What is the cars set-up?
Did you just add the AFC?
Is it a stock ECU you are running?

So many questions.
Cray91 is offline  
Old 10-14-2006, 10:41 PM
  #3  
0.0 BAR
Thread Starter
 
Join Date: May 2006
Posts: 39
Default Re: Help with P28 and AFC

I have a D16z6 with a T25 and some DSM 440cc injectors. I am running a VAFC. The ECU is a stock P28
CO_CReX is offline  
Old 10-15-2006, 09:14 AM
  #4  
3.0 BAR
 
Walter's Avatar
 
Join Date: Apr 2006
Posts: 2,057
Default Re: Help with P28 and AFC

chip ur ecu and forget problems with AFC's
Walter is offline  
Old 10-15-2006, 01:22 PM
  #5  
0.0 BAR
Thread Starter
 
Join Date: May 2006
Posts: 39
Default Re: Help with P28 and AFC

Anyone have any idea why it would go into Limp mode?
CO_CReX is offline  
Old 10-15-2006, 06:02 PM
  #6  
0.0 BAR
 
Join Date: Mar 2004
Posts: 0
Default Re: Help with P28 and AFC

Because AFC's are a shitty way to do it. Chip kit is like $25 shipped.
SpankedYA! is offline  
Old 10-15-2006, 07:41 PM
  #8  
0.0 BAR
 
Join Date: May 2005
Posts: 0
Default Re: Help with P28 and AFC


The VAFC will not allow you to pull enough injector width to accomodate the 450's. The correct way to use the VAFC with 450's is to use a 3BAR MAP sensor.

Go search VAFC hack.


Then after you realize that you will need to spend more money to get a 3 bar; sell the VAFC, pay to have your ecu chipped and tuned. Hell, depending on what you sell it for, you might have money left over.



0b00st0 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
coreyhayman
Engine Management
9
05-29-2004 05:57 PM
davcivic
Engine Management
4
05-25-2004 08:38 AM
blackcivic44
Engine Management
4
04-21-2004 02:17 AM
alldriver28
Engine Management
1
06-25-2003 02:56 PM
DOHCZCEF9
Engine Management
3
05-23-2003 01:53 PM


Thread Tools
Search this Thread
Quick Reply: Help with P28 and AFC


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.