ok I just got my car done a few day ago and it runs like crap in the low rpm band also I am getting what seems like a redline/fuel cut at 6k to 7k before I put the turbo kit on my redline was at 8,2 also I am getting a cell which is 3 (MAP - manifold absolute pressure sensor) I am only pushing 5 psi I have check everything and I cant figer out why I am getting that CEL I have a missing link at first I thought it was bad I tryed to clean it out with break cleaner and it still did the same thing so I got a new one today and it did not help then I got a new map sensor still did not fix my problem I was going to hardwire the map sensor to the ECU the pin are D17-MAP Map Signal, D19 - Red/Wht, Reference Voltage, D21 - Blue/Wht, Sensor ground, Less than 1V I think that is right anyhow I was getting ready to do it when I found out that the VAFC pressure signal goes to D17 the yellow wire off the VAFC goes to the pressure signal output white wire pressure signal input i think it has to do with my VAFC it is all set at stock (sorry for the run on my period button is broke )

here is my set up
97 H22A4 block, 97 type S head, Diamond 11:1 pistons, Diamond rings, Manley rods, manley oversized titanium valves with head ported to fit, Balancer shafts removed, Balanced and blue printed block, STR block guard upper and lower, full port and polish, block bored to over 2.3, ARP headstuds, A'pexi AVC-R, A'pexi VAFC, WALBRO 255 fuel pump, ACT Xtreme Pressure Plate, ACT 6 pluck Xtreme Race Disc,OBX oil pan, 450cc RC Engineering Fuel Injectors

 

maybe the missing link is installed up side down... But one think for sure.. if the ecu see's boost due to the map sensor.. you car will run like that .. all so i would try like 3 check valves instead of the missing link..

 

i did not put it upside down and you luke helped me put it on now anyone want to give me some real help?

 

the map sensor might be dead

 

what do you mean dead??? if you read all of my post i said i bought a new map or are you saying it is not geting power? i also check to see if i was geting power which i was so i know that is right i think it is my vafc

can any one tell me what the vafc hack is??

 

AFC Hack - The AFC hack refers to a MAP sensor input scaling device (AFC) "hacking" the signal to your ECU and fooling it into thinking that it is not seeing positive manifold pressure. These are normally small electronic devices connected in-line with your ECU. Some more elaborate devices, such as A'pexi's V/S-AFC, SMC, and so forth, accomplish the same thing, but have the feature of being able to tune a specific percentage of "cut" at designated RPM increments. How does this work as a management solution? As positive manifold pressure builds, the MAP sensor sends a voltage signal to the ECU. This signal, if above ~3.1volts on a stock Honda MAP sensor, will cause the ECU to "shutdown" and go into limp mode, rendering your vehicle inoperable until it is turned off and restarted. The AFC intercepts this signal and scales it by a user-defined amount. This scaling allows positive manifold pressure to build while keeping the ECU happy. Fuel compensation for this setup is done by installing larger injectors. These higher flowing injectors allow more fuel to flow through during the same pulse duration to compensate for MAP signal scaling (which decreases fuel flow). No fuel pressure regulator is needed. No upgraded fuel pump should be required. This setup is normally god for ~10psi