BradEK9

So I'm trying to get my car re registered and I need it inspected , 98 ek coupe with lsv swap got a 00 si harness, with step down harness p28 ecu now I know I need to switch out my ecu to obd2 to be read, which ecu should I buy that will work and plug right up to the harness??? Anyone help thanks alot

doctorake

No clue since every state is different.

You need an OBD2A harness though since your chasis is ODB2A, the 99 or 00 Si will not work.

BradEK9

Sowhy wouldn't the harness I have in now work ? Won't be able to read ? Why harness and ecu would I need

doctorake

BradEK9

Alright so il pick up an obd2a harness, and what ecu should I run, one that matches the engine ? Or the car ?

doctorake

Dude, What state are you in? No one can help you since everyone is different. Are you talking a safety inspection or an emissions test.

BradEK9

I been researching for a week it's crazy everyone says something differnt , I'm in ny, emmisions test I wouldn't be going therew this for a safety,

doctorake

http://www.dmv.ny.gov/vehsafe.htm#einspect

I am not an LSV expert but I would think you need an OBD2A GSR ECU. A 96-98 ex harness . This thread will tell you how to wire it

https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/92-00-honda-engine-swap-wiring-guide-vtec-non-vtec-2987229/
especially "Mostly plug and play. Reuse VTEC solenoid, VTEC pressure switch, and knock sensor wiring. Secondary O2 may have to be extended if if doesn't reach. For B18C1 the IAB's will have to be wired on the P72 ECU (see figure 6 for OBD2A and figure 7 for OBD2B). The intake air temperature sensor will have to be relocated in the intake arm somewhere as the A2 manifold doesn't have a place for it (see figure 8). For B18C1 and C5 you can also convert over to the round style IAT and place the connector on the manifold (see figure 9 for plug style). "

once you eliminate all check engine lights take it to get inspected and if it still fails do not be afraid to ask why, get all the information on what it needs to pass.

BradEK9

Thanks a lot that helps , 1 more question instead of buying a whole new harness could I buy the obd2b to obd2a conversion harness ? Will that work ?

sive

i'd wait to buy stuff until you know exactly what you need.

Im from NYS, NYC is different. In NYS its just a plug in into the obd2 port and check the monitors. No emissions besides CEL.
Did you do the swap? block? head?
Your going to need all the evap stuff (purge sol, right charcoal canister,ftps) to go with whatever computer your going to use which needs to be a stock us ecu, distributor, possibly injectors depending on what kind your using, essentially every plug on a obd2a harness needs to be plugged in besides p/s.
Idk much about lsv like what ecu (has to be vtec, p30, p2t, gsr, Itr ) but something to look for are immobolizers in the ecu. You can bypass it but it will cost ya, plus the cost of the ecu. If you bought the car your going to have to do a lot of reading.

If you live in NYC theres emissions (tail pipe sniffer) and idk what your going to do about that.