im a little confused about what i need for a b20z into a 2000 civic ej8. i will be running a obd1 p75 ecu, but will i need an adapter harness to make it work? thanks

 

yeah they call it a step down harness or obd2 to obd1 conversion harness. Why not find a obd2 ls ecu?

 

so it will be easier to tune with the obd1 ecu.

 

a p75 will make your engine pop, unless its chipped to act like a p72.....the lack of vtec support on the ecu.

switch that as fast as you can. my friends homeboy blew three motors for not changing his ecu and keeping a p75.

but if you really want, i got an OBD2a LS ecu, i am willing to sell for cheap

 

ok so i need an obd2 to obd1 harness?

 

the jumper you need is obd2b to obd 1.........dont rev any higher than 7 and you should be fine

 

So which ecu to use for a b20b into a 98 civic??

 

your stock ecu will work fine...you could use a obd1 chipped but you will need obd2a to obd1 jumper

 

What is a obd2 to obd1 conversion harness?:
A conversion harness is a jumper harness which plugs and plays into an obd2 vehicle and allows you to run an obd1 ecu.

Picture of an obd2 to obd1 conversion harness:


For better performance, you may want to consider chipping the obd1 p75 with a tune/basemap for a b20 setup

 

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


For better performance, you may want to consider chipping the obd1 p75 with a tune/basemap for a b20 setup </TD></TR></TABLE>

Isnt the P75 close enough that it can be run as the b20's ecu for the life of your car?

In other words, whats a chipped p75 going to offer that is really noticeable?