since i have a 97 gsr i have to get the obd2 to obd1 conversion harness but then do i need a obd1 gsr ecu?

 

Yes.

 

If your running another intake manifold without the butterflies, u can run a p28 ecu which is usually cheaper then the gsr ecu.

 

I have ECUs and harnesses, PM me, and I'll also answer questions.

-PHiZ

 

Hondata also has obd 2 p28 ECUs, then you don't need the conversion harness. Thats what I have.

 

And Hondata's software enables a P28 to drive the secondary intake runners on a GSR.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hondata &raquo;</TD></TR><TR><TD CLASS="quote">And Hondata's software enables a P28 to drive the secondary intake runners on a GSR.</TD></TR></TABLE>

How is that accomplished? Is it from using the A/C clutch line, or by using an automatic ECU, and using the A/T lockup solenoid?

-PHiZ

 

how much is the hondata p28 ecu then and thanks for answering my question.

 

By either using the AC output or the purge solenoid output triggered by revs, speed and load.

Price 425 for the ECU with adapter + the S200 system.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hondata &raquo;</TD></TR><TR><TD CLASS="quote">By either using the AC output or the purge solenoid output triggered by revs, speed and load. </TD></TR></TABLE>

Can you tell me how many aux's can be turned on and off via revs and load on a P28 ecu using hondata's software.
e.g. Nitrous solenoids / boost control solenoid valve / secondary intake runners ect ect?