ive got a 2.1L hi comp motor thats currently running hondata. my problem is that i have an obd2 civic and i need to go back to an obd2 ecu. i tried using a buddies obd2 p72 and the car runs like **** however i am throwing no codes. im using the stock injectors as well. what can i do to make the car run more smoothly. do i need to up the fuel pressure?

 

it might be looking for a knock sensor i believe that ECU does

 

i am throwing no codes i have all the necessary parts that is needed for obd2. the problem i have is that the ecu i am using is for a 1.8 my car is a 2.1. i need to find a way to make this p72 ecu to work with my motor.

 

why don't you just plug it in when you go to take emissions and then take it off as soon as you are done with it? Or will that not work at all?
Why cant you use the OBD 1 ecu with hondata for emissions?

 

my car is obd2 and i believe it is against the law to go back to obd1. i would drive with the hondata to the emissions place but if i dont start the car with the obd2 ecu i will throw a gas tank code. i must use the p72 from a cold start to not throw codes.

 

dude emissions laws fu*king blow. states like CA should suck a ball sack for making ppl go thru that bullshit of smogging then trying to get all other states to do the same. nothing but a damn headache bro.
hope you figure something out. keep us all posted on what you end up doing. i will be in the same boat as you in a few months.

 

well i live in WA state now so if you figure out something let me know

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b20izzle &raquo;</TD></TR><TR><TD CLASS="quote">ive got a 2.1L hi comp motor thats currently running hondata. my problem is that i have an obd2 civic and i need to go back to an obd2 ecu.</TD></TR></TABLE>

You're problem is the high compression, not you're ecu. I know! California has no love for us!