ive got a 01 prelude what is needed to change the obd2 to obd1? ive heard that some say you need 4th gen injectors, and distrbutor. some say you dont. so icant find a correct answer. and would a p.72 be the best or p.28??? i ask this because they say the p.72 is off of a gsr which has dual butterflys is this true to??? can any one help me thank you!!!!

 

Man - I know i shouldn't say this. But search seriously. That information is everywhere.
Start looking in the prelude essential links. That has a lot of good information.

 

if your running a stock ecu get the p13.

and yes this has been covered alot.

 

i found one post that made sence im just trying to get a solid answer

 

You don't need anything other than a p72 or p28 and OBDI conversion harness. P28 has no IAB or knock board. P72 does.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nervous &raquo;</TD></TR><TR><TD CLASS="quote">You don't need anything other than a p72 or p28 and OBDI conversion harness. P28 has no IAB or knock board. P72 does.</TD></TR></TABLE>

That's the answer you're looking for. A conversion harness + ecu is all you need.

Oh, and P28s can be modded to support IABs, although you don't see them all that often.

 

that helps better thanks so far guys