i picked up a y8 im already equiped with obd 1 injecters from a guy who had it on a d15b2 the same motor im putting it on. #1 what ecu do i have to get if i cant use mine? #2 whats the conversion going to do to my ability to pass smog?


off topic- how many volts are at the cruise control buttons at the steering wheel?

 

OBD1 Y8 runs on the P28 ECU. Very sought after due to chipping and VTEC. As far as your conversion I believe it will require you to pass the newer standards for that motor. I.E whatever a 92+ civic would have to have to pass smog.

 

Good luck. I see you are in California.

D16Y8 is OBD2 so you need to make the engine and emissions equipment 100% stock D16Y8 OBD2 compliant.

The biggest problem with this conversion is going to be finding a way to retrofit the gas tank to utilize the OBD2 tank pressure sensor.
I've never seen it done in a 4th gen- usually people that try to run an OBD2 ECU end up tricking the ECU to thinking the sensor is present and working or run a JDM ECU that doesn't look for the FTP sensor.
Neither "fix" will pass the inspector when you go for a CARB sticker.

You will also need the downstream O2 sensor mounted in the catalytic converter. This 2 parts (cat and O2) -new- alone will probably cost as much as a used engine.

 

the other guy said obd1 y8 i think becuz of the obd 1 injectors on the y8 im i hope you missed that. if i get the obd 0 injectors would that make it easier?

 

Let me try to be more clear. It maybe be that I'm just reading your statements and thinking you are asking something that you didn't intend.


Injectors are not OBD specific. They are either peak-hold type (no resistor box) or saturated type (required resistor box).
What you need to make sure they are the correct flow rate for the ECU you have.
Since you need to run the stock OBD2 ECU for the D16Y8 to pass smog legally in California then you need 240cc/min injectors.


When the tech pops your hood, they will see that you do not have the stock engine and fail you instantly.
After you put a different engine in the car, you need need to then take the car to an inspection station (NOT a smog test technician)
They will inspect your car per this guidelines http://www.bar.ca.gov/80_BARResource...uidelines.html and if you pass their inspection, they issue you a BAR sticker.
The ECU must match the engine you are installing.
For the D16Y8 this will be the P2P (96-00) and the P2T (99-00 Si) ECU.

THEN you can take your car to a smog tech for your smog checks.


They handle 12 volts.

 

I was wrong. 4drEF has it right. I forgot the Y8 was OBD2 and you will have to run that. My first statement was the truth though. You will have to meet the appropriate regs regarding your current motor to pass BAR and smog.

 

Please tell me you guys think I'm doing a full engine swap. I'm just using the Y8 intake manifold to do a mpfi conversion

 

And I asked the guy I got it from he said he was running the y8 intake manifold on the d15b2 with a pr4 ecu

 

So now you are going to just run the intake manifold?
Totally missed that.

It will fit on the b2 and you will need a MPFI distributor, PM6 ECU, and convert your wiring to MPFI.
PR4 is for a 1.8L engine and will run your little 1.5L too rich.

Instant SMOG fail for visual. You can't swap intake manifolds.

 

Damn, cali standards are tough. That sounds like a total PITA but I guess when you live there you do what you gotta do.

 

Well it passes smog as is but fails evap. a ticket a got this week for no registration gives me until January to fix it.

Who does the inspection dmv or smog place. Smog place I hope the owner is a good friend of me and my dad. If its the dmv unfortunate but I can just wait until after it gets registered to covert to mpfi and put the dpfi system in a box on a shelf in my garage until I need it again 2 years later.

 

bmp

 

I have no idea why people in california even bother, seems crazy to me.

 

I'm going a different route. I'm still curious who does the inspection though.

 

b.a.r. Not the dmv

 

Yeah. Honestly, if this is a big hobby for you I'd move. Or keep it off the street. Seems like a lot of hassle.

 

... or do a complete engine swap instead of just an intake manifold.
Just go with an OBD1 motor and it's not even a big deal.

 

Okay. I don't live in California, so this is all black magic to me. Just run all the environmental stuff that came on the motor. Should pass.

 

Yup! That's all there is to it.

I feel sorry for the people who can't even do any tinkering to their car. Some states are so much more restrictive (can't even use an aftermarket exhaust), but for some reason CA gets a bad rap.

 

But what about the inspection? Will still fail if it passes smog with a swap

 

As long as it is newer than your car, you are fine. That's the law to my understanding. It has to pass emissions for the year of the motor and the motor has to be newer than the chassis production.

 

That's correct.
1) If the engine was offered in your chassis - Example: If you had a 1991 and pulled a D15B2 from a 1988, it can still go in since it was offered as stock equipment in 1991.
2) An engine from the same vehicle class (no truck motors in a passenger car) with the proper California emissions equipment from the year chassis the engine came from. A D16z6 would need an OBD0-to-OBD1 wiring conversion, P28 ECU (not chipped), and proper functioning emissions equipment to match the D16Z6 OEM configuration (all vacuum lines have to route to the proper places and everything like the EVAP charcoal canister must be present and functioning).

Obvious engines are the Integra motors, but you can even get a B16 in there since the Del Sol came with one. Finding the stock Del Sol ECU is the tough part.

Newer engines that are OEM for OBD2 systems (like the 1996+ motors including the D16Y8) are not recommended since the OBD2 system utilizes a pressure sensor in the fuel tank. The 88~91 chassis doesn't retrofit with the newer style tank. I'm really not sure how you would go about dealing with that sensor legally.
Something about 1997 spec that might not utilize this tank sensor, but I haven't looked into it at all.


Check with your local inspector before considering an engine swap to get more info to keep you in the right direction!

 

P30 was the OBD1 B16A3 ECU, right? 1994 Del Sol VTEC. Good luck.

 

im sorry for asking again but who does the inspection?

if its done by the dmv and its a bigger deal than i thought and a mpfi conversion using a Y8 IM will fail me automatically. ive been conjuring up a mpfi/dual point look alike using a Y7 IM which looks like a dual point IM. maybe i can macgyver the B16 TB on there and still keep the whole dual point intake ducting . and shave done the fuel rail as much as possible to become as discrete as possible.

 

Or you could just make your own CARB sticker and get a false registration.