8YourV8

B18c1 turbo
no cat
no o2's
chipped P28 ECU

The car is technically an OBD2 but ECU converted to OBD1 for tuning purposes.

2 years ago in Massachusetts, there were changes made to all emission checks for inspection stickers. It's ALMOST impossible to get a sticker now if you don't pass emission checks.

Should I just buy a used OBD2 ecu and have it reflashed with my vin#, and then have a local tuner program it to bypass all CEL codes, and tune it on the base map just to get good AFR's for pre-vtec engagement so I can swap computers when inspection time comes? Reason I suggested a minor tune on the OBD2 computer is to complete full drive cycle ~75 miles safely without blowing $#!% up so I can pass.

Would this work?

kyden

you can't do any of that on a b series obd2. you'll have to swap over stock injectors + ecu. if you could tune an obd2 b/d series ecu everyone would have used i already.

8YourV8

I see. I thought they could be tuned on a base map but not chipped for anything.

Thanks.

2k.civic.si

you can chip/tune obd2 and its not cheap.
you can also run obd2 with and AEM FIC to tune it.

8YourV8

I am in no way experienced with tuning. I can pretty much only tell you what AFR's are. Again, forgive my noobishness.

I would need an OBD2 ecu with a reflash with my vin# first.

Then what you are basically saying is I could plug in this AEM F/IC and spend 2 or 3 hours tuning the car, bypassing whatever codes, and I'm done? I can just unplug it and have a permanent tune on my OBD2 ECU without having it reset if I unplug the battery? And this would be a viable replacement for an OBD1 Crome chipped ECU?

What kind of $$$ are we talking to complete this process of going back to OBD2? Full tune and everything

2k.civic.si

the aem fic is a piggy back for tuning timing and fuel among other things. (no its nothing like a shitty vafc)
no you wont be able to get rid of codes (you will need to hookup all the proper sensors)...even if you could get rid of the codes the ecu still has to pass all the readiness tests to pass smog...honda should be able to reflash your vin in the ecu.
The options out there for actual tuning and programming of the obd2 honda ecu's are very expensive.

hybrdthry911

the ecu's dont have your VIN in them

2k.civic.si

ya i called a friend who works at honda in the parts department and he said only the newer obd2 honda ecu's have the vin.

but everything else i have said stands.

accord_raffi

My 1996 accord's obd2 ecu did have the VIN programmed in. To pass inspection, I had to do the usual: rear o2 defouler, swap the injectors to stock, pull the wastegate spring.

How did you tune without a front o2 sensor? All open loop maps?
How are people tuning obd2 ecu's now?

TheShodan

iTrader: (14)

Well, on many other platforms outside of honda, you can do so with an OPEN SOURCE program, Access Port, or even AEM EMS

For Honda, its either Power FC, Emanage ultimate, or A OBD2A configured ECU from Hondata

kyden

power fc and hondata won't pass inspection though. no signal from the ecu to the obd2 port.

8YourV8

Did a little more research on this.

So it looks like without spending upwards of $2-$3k for parts and a tune, there is absolutely no way I will pass mass inspection.



Hopefully the RMV will approve my emission pass request letter. Right now that's looking like my only option.

So glad I'm converting body kit and exhaust back to stock... maybe I can just get away without having a sticker when my car finally stops drawing negative police attention.

hybrdthry911

just put the stock ECU, injectors, map sensor and o2 sensor's in the car. get it inspected and then switch back. thats what at least half of turbo hondas owners do.

the VIN in the ecu doesnt mean anything, just say your ECU fried and you got another from a junkyard.

8YourV8

The problem is driving it like that for a full drive cycle. That really can't be good for the motor...

kyden

its fine if you don't hit boost. but if you can't control your own foot that's your own fault.

8YourV8

Well I don't have an issue with that.

However, wouldn't the stock setup read incredibly high emission numbers, since I don't have a cat, thus throwing a CEL? Am I asking redundantly stupid questions here or should I just try it out and see results for myself?

golf-mk3

find a buddy take his inspection sticker and give him 25bucks for a new inspection. did this a couple of times with my big turbo 1.8t golf. make sure you get the sticker nice and worm before you start taking it off.

accord_raffi

Your engine will be fine if your putting the stock injectors, stock ecu back in, and pull the wastegate spring...unless your engine is built (i'm doubting it is though). You'll have to drive it like 50 miles first before you go for the inspection.

Search for the "defouler trick" and do that to solve your o2 problem.

All this worked for my 1996 turbo accord which was also catless. Just do it.

cleansi

Its been a whille sense i ive lived in MASS but do they still have the vin # on the stickers tho.

i know it is a pain in the *** big time for any mod to pass goodluck

8YourV8

yes