i jus got a 99 gsr motor. complete minus tranny. i got the cpu, but i was told it needs to be reprogrammed?. is this true. and if so why would i have to reprogram it, if its ecu that matches the motor?

things cherry. 16,000 miles on it. USDM . gsr it was in is now b18c5.

 

You will need an OBD0-to-OBD0 covnersion harness to run that ecu. You are better off converting everthing to OBD1. Either way, I can make you an OBD0(88-91) to OBD2(96+) conversion harness to run that ecu, distributor, injectors, etc.

JAson

 

blown hatch you seem to know your sheet if you are making theese conversion harnesses. And seem to bee the man i need to ask a few questions. heres my situation i got a 97 crv moter with 28883 mi9le on it for 1000$ with ecu though they call it a pcm (power train control modual),and the wiring harness that goes straight to the computer from the engin compartment. Well the guys at honda were cool as hell and photocopied the pcm plug/pin layout for me out of there service manual. well froom there i maped out all the wires i would have to hard wire into my cars actual harness and i dosent seem too hard only thing is do you know if the vss pulse from my 89 will feed the crv computer corectly or do you have any tricks to take care of this problem. another thing is the eld(electronic load dector) input for the pcm(crv) seems to me to just tell the altinator to make more or less power dose our car have this or will i need to trick it once again, and here is what i was thinking on how to trick it two relays on giving the voltage through resistors to eld through p lights and the other relay to kick in and cut the other off when the head lights are on this should work in my thiory<spell?. Any in put would be very use full. and one more question do you know if the crv pcm (automatic) and the integra ls (manual OBdII) have the same harnesses besides the one in the crv that goes to trany if so any pros or cons on using it besides it would run lean which i could fix probly with a adj. fpr.

 

blownhatch, i need the hookup on a wiring harness. I'm putting together a swap for my friend... B20vtec into 88 crx si. I'm using the 88-91 B16 head and i'm trying to get together all the older b16 sensors for the block. can you make me a harness. If you need a core i think i have the one that came stock off the B20. Thanks (running pr3 ecu, just need the engine bay wiring.)


[Modified by 88crxoncrack, 11:55 PM 2/20/2002]

 

Just use the stock Si harness and add 4 wires and stay OBD0 if you want. It is very simple when you have the Si EF. Do a search, you will find all the info on the pin outs. Let me know if you still need help.

Jason

 

If I were you, I wouldnt bother with that ecu. I would just keep the B20 motor, convert the car to OBD1 and be happier. Also, I think that you will have to chip that ecu because it is an automatic ecu. I am not sure if anyone is chipping those things yet.

All the other things, I can bypass when I make the OBD0-to-OBD2 conversion harness, but again, I emphasize that you will make more power going OBD1 and it will be less of a hassle. Either way, let me know.

JAson

 

why would it be easer to go obd1 all the stuff is all redy wired up to the moter all i need to feed the harness is a few things under the dash all redy at the pcm i.e.brake input, vss, eld, a/c swich, all of which are at the ecm in my car all ready. And how would obd1 allow me to make more power? the main thing i relly need is to know if the plugs off the crv moter will plug into a integra manual ecm seems that it would work and then i would have all the trany wires in there for other crap i wanted to ad later. ofcourse i have heard that there are some changes to be maped out between the harnesses but i have herd this from un reliable sourses.

 

You do NOT want to try and run the CRV engine harness, that would be a mess. All of the plugs on the crx(if it a SI) will plug into the crv motor, with exception of some few minor plug changes. Now you talk about the plugs off of the crv motor plugging into the integra ecu...What do they engine plugs have to do with the ecu. I hope that you are not trying to use the full crv harness....cabin too. You are limited with the OBD2 ecu as to what you can keep and ditch without it throwing any codes. If you run a test pipe, more than likely you are going to throw a code.

Easiest: Crv motor, SI complete harness, OBD0-to-OBD1 conversion harness, Chipped OBD1 ecu, OBD1 distributor, 4 wire O2 sensor....done.


[Modified by Blown90hatcH, 2:17 AM 2/23/2002]

 

well the reason i was wandering if the integra 0bd2 ecu has the same plug ports as the crv( idont know? thats why i asked) is because i want to use a integra computer so i wont have to worry about automatic crv pcm. as for the crv dash harness i got a 18" pig tail that i am thinking of back taping the stock si harness in my car now for the in puts that i need to go to the computer that i dont have know going to the computer. after this it seems that i only need to feed the computer with ignition and constant 12volts and it should work in the therory that i see on paper. As for the test pipe (again i dont know where this came from) this car is a daly driver and sees around 70 miles a day and here in va you cant pass inspection with out a cat, I will how ever be running the catco hi flow cat that is on the car now and will weld a bung into the exaust after the cat to acomidate the 2nd O2 sensor. The obd1 idea sound nice but i am starting to go over the spending limit as we speek and the yards around her are ded set on not parting out the moters and i now am havin a hard time finding a b18 intake manifold and if the sensors i have now would work with obd1 than i would do this(will they??),if so i have a pig tail for obd1 ecm and either way i am going to have to buy a new ecm that would be great because i woulk have every thing i needed to do this but i cant aford to go out and buy all new sensors to go obd1. if the plugs from the crv will plug in to the integra ecm than this may be the way for me to go.

The moter harnesses that i spoke of well i ment to say the harnesses that go to the ecm, the harness on the crv's ecm went straight through the fire wall to the moter blam all sensors are allready hooked up just need to cut a hole for the harnness to go through my firew wall then the 2nd o2 senser goes with the dash harness which i have 18" pigtail here i will have to extend these wires to where i place the 2nd o2 sensor not all that hard if it will work




[Modified by 89SivicHatch, 3:24 AM 2/22/2002]

 

The ecus are different on the (96-98) vs (99-01). If you have a 96-98 harness from the CRV, then you need the 96-98 LS ecu.

You are making this very hard. I can make you a conversion harness for the OBD0-to-OBD2 if you want. That is....take that crv 18" pigtail and convert it to have OBD0 plugs on the other end. Let me know.

Jason

 

no thanks but you have answered my question. the wiring shouldnt be all that hard only about 15 wires to hook up and mast are all redy at the computer. you know of a good place to get a 96-98 integra computer


[Modified by 89SivicHatch, 1:41 PM 2/22/2002]

 

Oh yeah....I forgot to mention...you can not use that B20 distributor. So you will have to get another distributor anyways.