I'm not really sure what the intake manifold is, I got it off some kid on Honda-Tech. IIRC it's from a 91 Si but I'm not certain. Why do you ask though? Is there a difference? The ECU is a PM6

Hmm I never thought of that. How much work is that, exactly? I don't remember what my old DX transmission was revving at on the highway, but the Si transmission seems to be perpetually 3000+RPM on highway driving and I'm not sure the d15b2 likes that too much FE wise.

Yes, there is some variation in runner and plenum size, but I'm not sure how much it affects FE.

I read somewhere on Automotive Repair Reference Center, which is a repair database w/ service literature like ALL DATA that states that both the 88-91 and 92-95 computers are both equipped with an 8 bit microprocessor.

Desktop computers made the same transitions that processors in automotive applications have... 8 to 16 to 32 to 64 bit. Are you suggesting that, within one of those groups, the processors introduced at the beginning of development would be just as powerful as those released later on? Developments in architecture and/or maximum clock speeds can make big differences in processing power, without messing with the bus size.
It wouldn't surprise me if both ECUs had 8-bit processors... A more powerful processor probably would have been excessively expensive and just plain overkill. I doubt even the ECUs sold in new cars use anything beyond a 16 bit processor.

For those not familiar with it, ARRC is free of charge for use at many public libraries or by library members for use at home. Check your library's website, look for something about online databases or online reference, and look for either ARRC or EBSCO (EBSCO is the company that provides ARRC).

The 88-95 systems are referenced in there fuel and ignition systems in the same section. They do mention the only thing that has change was some evolutionary changes and ecu is now called a pcm. whatever that means. I'll have to find all the relevant data and post it. I'm not really saying anything. I can't read a manufactures mind. I'm just stating some facts.




If you didn't know, your *** better call somebody. It's AWESOME!!!!!!!!

.... then why are you posting :p anyway, car computers dont need more instructions sets.:thumbup:

hmm my library didn't come up with anything on a websearch. I'll check next time I am actually in there.

So how detailed is this?
All City Data/ Helms detailed? :thumbup:
Or Haynes/Chilton detailed:thumbdown:

Haynes/Chilton. I'm pretty sure it's actually made of Chilton's content...I think I remember seeing Chilton copyright marks.

I'd be surprised if your library didn't offer some access (maybe only in the physical library) to the EBSCO databases, less surprised if they offered some EBSCO access but not the ARRC.

Found it! And it's available online! I don't need to go to the library! Sure it's not a Helms but better than nothing.