I was wondering, I know with the p72 ecu u have to wire the iab, and knock sensor up. But if u chip ur p28 will u have to do them things?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by `chrisb &raquo;</TD></TR><TR><TD CLASS="quote">I was wondering, I know with the p72 ecu u have to wire the iab, and knock sensor up. But if u chip ur p28 will u have to do them things?</TD></TR></TABLE>

No. The P28 has no input/outputs for the IAB or knock. So you can leave those out.

 

Alright and the engine will not throw any codes using the chipped p28?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by `chrisb &raquo;</TD></TR><TR><TD CLASS="quote">Alright and the engine will not throw any codes using the chipped p28?</TD></TR></TABLE>

The ECU throws codes. Not the engine.

 

u should change the stock gsr IM if ur gonna use a p28

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ekb16 &raquo;</TD></TR><TR><TD CLASS="quote">u should change the stock gsr IM if ur gonna use a p28</TD></TR></TABLE>

Or just undo the vacuum line for the butterflies so they're always open.

 

From what i got so far i got the a20 pin switch to the a17 pin on my ecu thats done, then i cut my knock sensor off the gsr harness and add to it my z6 harness on plug d for the shock tower, then i add a wire from plug d through the firewall to d3 on the ecu plug .. Is that all ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by `chrisb &raquo;</TD></TR><TR><TD CLASS="quote">From what i got so far i got the a20 pin switch to the a17 pin on my ecu thats done, then i cut my knock sensor off the gsr harness and add to it my z6 harness on plug d for the shock tower, then i add a wire from plug d through the firewall to d3 on the ecu plug .. Is that all ?</TD></TR></TABLE>

Yeah. That sounds like all the wiring mods. However, why did you have to switch the A20 pin to the A17 pin? Your car allready came wired with VTEC and with a 2 wire IAC.

I believe the A20 to A17 pin switch is for 96-00 non ex/si models that have the 3 wire IAC, IIRC.

 

switched the a20 pin cause ya dont use it on the gsr motor and put it in a17 for the iab.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by `chrisb &raquo;</TD></TR><TR><TD CLASS="quote">switched the a20 pin cause ya dont use it on the gsr motor and put it in a17 for the iab.</TD></TR></TABLE>

What does the A20 correspond to? You dont have an IAB function on the P28, though. You might as well have just left that alone....

 

i know im not using the p28 no more im using the p72 ahah