SAFCII Knock wire on 2G?

[heavyD]

Now I know the knock count on the SAFC will not be accurate but will attaching the wire to the ecu do any damage? I know the O2 sensor/blue wire mod causes innacurate O2 voltage but I assume that if the Apexi instructions say to hook up the knock wire that it won't do any damage. I installed the wire and haven't noticed any problems and I have a pocket logger.

 

[ASMX86Routine]

if you dont mind signal degredation on a sensor that could possibly save your engine, then by all means, continue.

 

[cuong1106]

2gs can not read knock on a safc or safc2. u need dsmlink to read knock

 

[Blk_99gst]

if you dont mind signal degredation on a sensor that could possibly save your engine, then by all means, continue.

Ditto on what he said:

Cut and paste explaination (This is for the safc blue wire mod, but could also apply to the knock sensor wire too):

Blue Wire Mod Explained
Most voltmeters don't impose any effect on a circuit
because they are in the millions of ohms of resistance
range. If you want to meausure a the voltage of a low
resistance circuit this high resistance voltmeter is
not neccessary, and perhaps that was the design of the
AFC's blue wire mod. I'm not sure what that wire is
supposed to be used for anyway. For the o2 sensor, too
much current flows through the AFC, essentially
putting a load on the o2 sensor itself.

You might see a variation between the pocketlogger and
the afc, but more importantly, you will see a huge
difference if you put a switch on the blue wire. on
Watch the logger, and toggle the switch. Your o2's
will suddenly jump up to where they are supposed to
be. On my 420a NT talon the blue wire dropped the o2's
from .98 to .92 and caused the car to run extremely
rich in closed loop mode (with SAFC zeroed out).

 

[heavyD]

Ditto on what he said:

Cut and paste explaination (This is for the safc blue wire mod, but could also apply to the knock sensor wire too:

Noticed how you said "but could also apply". This means you don't have proof. I totally understand why the blue wire mod doesn't work but it isn't listed in Apexi's installation instructions and the knock sensor connection is. If you go to VFAQ, prostreet online connects the knock wire in their how-to. Thanks but I was looking for proof not theory.

 

[Blk_99gst]

Thanks but I was looking for proof not theory.

Well PROOF/FACT is that the safcII's knock functionality doesn't work with our cars. So I will direct this question back to you:

if you dont mind signal degredation on a sensor that could possibly save your engine, then by all means, continue.