Im gonna keep the motor stock for now.

Right now its in my 90'Integra its running on a pr4 obd0 ecu... but its not running right, it lacks power on acceleration, its running rich......

my brother in law has bought from rywire so im gonna get the conversion harness from them.

i found this site http://xenocron.com/ i wanted to get a ecu from them... has anyone here bought from them?? i read this when looking for a ecu "Stock P75 is the ECU used for an LS Motor swap. It should work with a ZC or B20 motor as well" i didnt like how they put it "it should work" that doesnt sound to sure......
any help?

 

any1?

 

If converting to obd1, a 92-93 integra ls ecu (pr4) or a 94-95 integra ls ecu (p75) will work. However neither of them are going to much different than the obd0 pr4 ecu.

 

My best guess is that the obd1 ls ecus are going to run a bit leaner due to the slightly more advanced emissions control therefore the maps are probably leaner, not sure though as I've never compared the stock rom dumps from any ls computer. The computer you're running now as well as the ones I suggested will all run the 2.0 safely.

 

ok will a bad o2 sensor cause it to run rich?

 

yes definitely

 

awesome. i got another used one im gonna try that......

hey i called you guys today for a p75 ecu..... in your description it says "it should work" i wanted to know if it will work?, i still wanna convert my car to obd1 even if this o2 sensor fixes my problem.....

 

Get a chipped P28 with a B20 basemap. Then if you can afford it, get it tuned.

 

Are there even any b20 rom dumps? All the usdm's were auto. A 96-98 integra ls rom would be the closest. Plus im not sure if the awd system would have affected the map at all. Xenocron, have you seen any b20 stock rom dumps?

 

thats exactly what Steve from HMO said to do..... then i looked up a p28 and its for a single cam vtec, thats why i asked on here cause i didnt want to call back Steve and question him again...

i should have done a lil more research before i got the motor, i was under the impression that it would just work with all my old stuff mani, dizzy, ecu, ect....

is a p28 a obd1 ecu?

 

It will work with ur old dizzy, ecu, and manifold. A b20 is identical to the b18b with one exception, bore diameter. There are a few negligible differences but none worth mentioning for your application.

And the reason people say p28 is because it is the most recognized/utilized/supported ecu for chipping/modifying.
They do not mean to run it for your motor as is because yes, it is for a 1.6l sohc. I've already told you earlier what ecu to run. If you plan on tuning you'll need the conversion harness, a chippable ecu(p28) as well as some other hardware/software depending on the route you go. I suggest you read up on pgmfi.org, then when your ready, xenocron can help you with what u need.

 

yes it came on z6's. it is the best and most common ecu to chip and tune on. an OBD1 p75 should work also

 

ya obd1 p75s are chipable just like p28's also p06's are chipable as well, neither of them are vtec ecu's but you could convert it to vtec down the road if needed.