I've got most of the parts now for a mini-me conversion, but I have a few questions about ECU's choices. The car is an 88 DX sedan with an automatic. The block is a D15B2 and the head and intake manifold are Z6. I want to keep the automatic since I will spend a lot of time in traffic. I want to keep the car OBD0 if possible and use a VAFC for vtec activation. The ECU needs to be OBD0, support MPFI, and support an automatic trans. Any help would be greatly appreciated.

 

get a EX auto computer and do MPFI conversion

 

The easy way would be to rig up an RPM switch on with an 88-91 Si PM7 computer, after the previously mentioned MPFI conversion of course.

 

Is PM7 for an auto? According to http://www.hondata.com/techecuid.html, the PM7 is for a ZC, the PS9 is for 88-91 4 door Civic EX Auto, just need to know what to look for so I get the right one for this project.

 

Oh, yeah, forgot you said auto. Try an auto 88-89 PG7 (Integra.)

 

That's another ZC ECU. I'm putting on the Z6, SOHC VTEC head, not the ZC DOHC head.

 

First off, it's not a ZC ECU. It's a USDM D16A1, OBD-0 flavor ECU. There is difference.

The first time around, I ment PM6, the Si ECU made evident by me saying "88-91 Si." I'm sorry, I hit the "7" button instead of the "6." That's not a ZC ECU, either. Your point is?

 

Is the ECU different between a DOHC and SOHC since it is mapping for two cams instead of one? According to the hondata page I linked to, it was a ZC ECU, that was why I asked with more detail.

 

The mapping is only slightly richer for the extra cam, that's it. The VTEC head will slightly compensate for this with a little extra flow. The VTEC activation will be handled by the RPM switch, so it should otherwise handle the engine just fine.

 

I need lots of information on what to get for doing mini me conversion in my 89 crx si. Ive got an z6 head with selinoid, intake manifold, aem adjustable cam gear, Mugen ecu. Please help. Also do I have to do any wiring for the ecu for vtec to kick in? And what distributor can I use for this set up. And how do I reinforce the block D16a6? Thanks to any information in advance.