I recieved a 93 civic dx (150k miles) and an auto transmission.
I am going to do a 18a1 motor swap and i wanted to know what ecu to use and if i could switch to a manual transmission.
I could'nt find this in the FAQ

 

You can convert the dx ecu to a manual fairly easily, and chip it to run the new engine's maps.

 

If you want a stock ecu that you won't need to chip you'll need either a p74 or p75 (obd1).

 

you are better off with the b18b because it is obd1 and available with a hydro clutched transmission. putting an b18a1 will cause you problems when it comes time for smog unless you can find a b18a1 from 1993 and a hydro clutch transmission so you can bolt it up without using the hydro to cable kit.

 

Ideally i would love a b18c but i heard that hey have a clearance issue. The b18b comes out of 1993+ tegs ls? Would that engine also use the p75 ecu?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fcrx7zoomzoom &raquo;</TD></TR><TR><TD CLASS="quote">Ideally i would love a b18c but i heard that hey have a clearance issue. The b18b comes out of 1993+ tegs ls? Would that engine also use the p75 ecu?</TD></TR></TABLE>

OBD-I LS uses a P72 ECU.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Everyones Hero &raquo;</TD></TR><TR><TD CLASS="quote">

OBD-I LS uses a P72 ECU.</TD></TR></TABLE>

Uh no. Thats a GSR ECU

OBD1 LS ECU's are PR4 (92-93) and P75 (94-95)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fcrx7zoomzoom &raquo;</TD></TR><TR><TD CLASS="quote">Ideally i would love a b18c but i heard that hey have a clearance issue.</TD></TR></TABLE>

Since when? My friends b18c doesn't have any clearance issues in his 92 dx coupe.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SkoundrelUSA &raquo;</TD></TR><TR><TD CLASS="quote">Uh no. Thats a GSR ECU

OBD1 LS ECU's are PR4 (92-93) and P75 (94-95)</TD></TR></TABLE>

You're right. My mistake.

I had a chipped P75 sitting in my room for the longest time when I was still thinking about doing a B series swap. Then I started doing research to go turbo I found out that I didn't need the P72 for the B18 because I could chip my P28 and run whatever map I wanted, other than GSR if I wanted to use the secondary butterflies.

 

p28 chipped

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nekoabandoned &raquo;</TD></TR><TR><TD CLASS="quote">p28 chipped </TD></TR></TABLE>
(this is what I said in the first place)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by littleredcivic &raquo;</TD></TR><TR><TD CLASS="quote">you are better off with the b18b because it is obd1 and available with a hydro clutched transmission. putting an b18a1 will cause you problems when it comes time for smog unless you can find a b18a1 from 1993 and a hydro clutch transmission so you can bolt it up without using the hydro to cable kit.</TD></TR></TABLE>

 

the b18c will fit just as well as the B18B in an EG with a stock hood. i have a vented hood and i still have enough room to put a big mac and not smash it...i left one in there on accident one time. the B18B will come in the DC style integra. the B18A will come in the DA integras. the preferred ECU to use is the P75.

 

thanks man. Guess i have more research to do first. I guess almost everything i knew was wrong.