I am planning on installing hondata into my b16a crx, with pr3 ecu.

I understand that the S200 will not work for the pr3 ecu, should I upgrade to obd1 in order to use the S200?, or ?

 

Upgrade to obd1 just so you dont have to deal with 2 o2 sensors. Plus there are more bin files floating around the net for obd1 setups. I did the obd 1 conversion and it got rid of all my o2 related problem, like my o2's being to far down my aftermarket(not getting hot enough) This is just my opinion though.

 

http://hondata.com/stage234.html says you can use your ecu with stage2/3/4... not the new system s200

 

definately convert to obd-1 for hondata use. I have the 4b and it is so much easier to work with obd-1 ecu's. I have been running my own turbo b16 in a crx with a pr3 hondata setup and i hate it. it works ok but tuning is more difficult, you can't switch map sensors easily, you can't import most maps, there aren't many base maps available, you can't datalog air/fuel ratios easily, and its just not as user friendly for a tuner as the obd-1 is.

 

alright, thanks for the replys, obd1 it is, what do i need to do to convert?

 

obd-1 conversion harness
obd-1 ecu
obd1/2 distributor
4 wire 02 sensor
contact blown90hatch on the board. he makes some nice looking conversion harnesses and they come with detailed instructions

 

which ecu should i go with?

 

it depends on the features you want.
do you want a knock sensor?
do you plan to switch to an intake manifold that will need secondary runner control?

I didn't car about keeping the knock sensor or about the secondary runner control so I opted for a P28. You can go to this page to see what ecu's have what features http://www.hondata.com/ecus.html

 

you can also go with a zdyne modified ecu. It is designed to work with obd-0 ecu's but i'm not familiar with them as much as hondata.

 

there is a p30 ecu avail. to me, should i take it? i don't need secondary runner control.. .

 

Which intakes have secondary runner control? Better yet, what is secondary runner control?

 

With the p30 I think you have to keep the knock sensor. It is really a matter of preference when you decide if you want to have a knock sensor or not. I chose to get rid of it because it doesn't do anything over like 4k rpm's.

The GSR intake manifolds have a secondary butterfly that opens up at higher rpm for better flow. That is the secondary runner. If you were going to use a gsr intake manifold you would need an ecu that would open and close the butterflies

 

i can just disable knock with hondata, not ?

 

I think you can disable it with the new s200 system but not the older systems. If you get one of the older systems you have to use an ecu that will support the sensors you want.