Chipping a p28 to use secondaries?
07-28-2007, 06:56 AM
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Chipping a p28 to use secondaries?
The wiki page on pgmfi is not working and I can't find anywhere archived on here how to do it.
Can anyone shed some light on how I can modify the p28 ecu to run the secondaries on my h22? I don't want to zip tie them open or run additional wires either.
Can anyone shed some light on how I can modify the p28 ecu to run the secondaries on my h22? I don't want to zip tie them open or run additional wires either.
07-28-2007, 01:03 PM
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Re: Chipping a p28 to use secondaries? (dpetro1)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dpetro1 »</TD></TR><TR><TD CLASS="quote">cause its one of john's super secret tuning abilities. 
</TD></TR></TABLE>
haha, na it is just easier to discuss over a PM.
</TD></TR></TABLE>haha, na it is just easier to discuss over a PM.
07-28-2007, 01:21 PM
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Re: Chipping a p28 to use secondaries? (dpetro1)
The procedure to add IABs is different depending on how they are wired. One IAB wire will always run to the ECU, the other will run to either +12v or gnd. Choose the procedure to match how your car is wired! This is very important!
USDM ODB1 B18C: ( ECU sends ground, IAB wired to +12v )
IAB conversion... (this is for Manual cars only, but an AUTO USDM ECU converted to manual will have all the parts you need present)
Remove: R135...11F0/1720 autos only R150...1980/LS only
Add:
Q17(A143)...already present on USDM auto 11F0/1720 (A5x, L5x, etc). Not present on EDM auto 11F0/1720 (G5x, etc).
Q34(D1780 or C3225?)... already present on USDM auto 11F0/1720 (A5x, L5x, etc). Not present on EDM auto 11F0/1720 (G5x, etc). may use PCS trans: Q31(D1780)
jumper from right hole of R135(trans side) to D13(arrow side)
Jumper wire for OBD1 IAB control:
your welcome.
USDM ODB1 B18C: ( ECU sends ground, IAB wired to +12v )
IAB conversion... (this is for Manual cars only, but an AUTO USDM ECU converted to manual will have all the parts you need present)
Remove: R135...11F0/1720 autos only R150...1980/LS only
Add:
Q17(A143)...already present on USDM auto 11F0/1720 (A5x, L5x, etc). Not present on EDM auto 11F0/1720 (G5x, etc).
Q34(D1780 or C3225?)... already present on USDM auto 11F0/1720 (A5x, L5x, etc). Not present on EDM auto 11F0/1720 (G5x, etc). may use PCS trans: Q31(D1780)
jumper from right hole of R135(trans side) to D13(arrow side)
Jumper wire for OBD1 IAB control:
your welcome.
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