I am in the process of doing the mpfi conversion on my 91 civic cx hb.
ON the back of the MPFI intake manifold is what appear to be the EACV which has the black/yellow wire and the blue/yellow wire. Also in the front of the manifold just like the DPFI manifold there is a little plugin(I think IAT) with a red w yellow stripe wire and a blue w,yellow or white stripe. Also it is clear where the TPS is.

HOwever, on the back of the manifold there is some type of sensor with a black cylinder like object, has a rubber line running to it from the top of the manifold, and it has BLACK/YELLOW and a pure BLUE wire, what does this connect to? As it appears that I dont have anything like this on the DPFI....thanks

 

If I remember right,you won't have a plug on your STD/DX harness to plug into that thing.It's something the Si had and it wont hurt anything to leave it disconnected.It's on the back of the Si intake,right?

 

correct,,,it is on the lower bottom,,,thanks alot

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by subgeniusdude &raquo;</TD></TR><TR><TD CLASS="quote">If I remember right,you won't have a plug on your STD/DX harness to plug into that thing.It's something the Si had and it wont hurt anything to leave it disconnected.It's on the back of the Si intake,right?</TD></TR></TABLE>

ignore it, some mpfi manis have em and some dont, enjoy the mpfi man its day and night difference in power, trust me i just got mine done a few months back. great learning experiance to + confidence. goodluck

get back at us

 

ok sweet.....ya for sure its such a learning part...you actually learn what purpose half the parts have so for future swaps or repairs its key....I heard the si tranny swap gives a really good gain also but I want some fuel economy so no thanks......What I am interested in after I do this swap succesfully is installating the SI cam. Ill keep my little g-tech times posted throughout..thanks again for the help