i already did a search on it and i found these two things which i'm still confused about:

- can the vafc hack be used on obd II civics like the 99 SiR or is it strictly for obdI hondas? i only saw one guy who posted that he's using it in his obd II car and getting cel 45 but didn't get a reply from anyone. by the way, the SiR here doesn't have ANY O2 sensor(don't know if that means anything to the hack).

- how would i know if the injectors i going to buy are indeed 450cc? is there any indicator or number i should look for? on one thread, it mentioned that it should have a blue color stripe. is that always the case? if i buy one with a blue stripe, is it always a 450cc?

any help will be greatly appreciated.

 

i'm pretty sure you have two 02 sensors . yes i can used on OBDII.

 

the blue color tops are referring to DSM injectors.. the blue tops are 440/450cc the pink ones are 390cc i beleive. and yes you can use the afc on an obd2... btw dont forget to hook up the VTM if you have one on your ecu/car.... if u dont you will get a CEL hth

 

CzanSOHC,

we don't get any o2 sensor on our SiR here in the Phils.


civtek,
what's VTM?

 

On the injector it will be stamped "450"
That's the best way to tell for sure.

 

here is a pic of a dsm injector i have


if u look close on the blue u can see the 450 stamped into it

 

yeah me and Maxim were the two guys getting the code 45. It's just an obd2.2 (99-00) thing... it's not really that big of a deal. It should work fine for u.

 

so you're obd-0, eh?

 

i'm getting confuse, you guys got obd2 for your 99-00 SiR then what's this obd-0 thing? how would i know which one i got?



[Modified by _Endless_, 7:57 AM 12/18/2002]

 

This is a pretty good explanation of what the VTM is if your car/ecu supports it or even has it for that matter:
"Oil pressure does NOT trigger VTEC. Oil pressure is used push the pin in and lock the rockers of course, but VTEC mount and unmount are triggered by the ECU, which is obvious since the VAFC is taking over this function. The VAFC also does not send a signal to the ECU to activate the VTEC solenoid, it trigger the solenoid itself. The stock ECU uses the VTM (VTEC Pressure Switch) as a check to make sure that VTEC actually activated when it said it would. If the VTM wire does not activate right when the ECU thinks it should it triggers the code 22 CEL."
-Dirtylude

my obd2 ecu gave me a code when i hooked up the vtm to my o2 sensor thinking i didnt need it. i wanted to do the blue wire mod ...

BTW my ecu threw the code when took my car out for a ride to test if vtec worked correctly so Dirtyludes explanation seems correct

HTH