I have a p28 ecu. I'm guessing that because on my ecu it says "37820-P28-L01" So i'm assuming p28. Now, i have a b16a sirII and it came with a different ecu and got this one from a friend. I sold the other one and stayed with this one. My real concern is, if it is a usdm, will it matter? If not, cool. If so, I need to get a jdm one.

thanks

 

From that # I can tell you have a USDM P28 ECU for California Emissions. It was also made in late 1992 or 1993.

Why do you need a JDM ECU anyway?

 

thanks for the reply... If it is USDM, then does it matter? I read some topics somewhere about jdm vs. usdm and that somethings might not work right. The car seems to drive okay, but it doesn't feel fast as it should. But that doesn't mean much. anyways, thanks. Anyone know if it matters?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hb_racer &raquo;</TD></TR><TR><TD CLASS="quote">thanks for the reply... If it is USDM, then does it matter? I read some topics somewhere about jdm vs. usdm and that somethings might not work right. The car seems to drive okay, but it doesn't feel fast as it should. But that doesn't mean much. anyways, thanks. Anyone know if it matters?</TD></TR></TABLE>

You are running a B16 with a stock P28. The fuel and timing maps are way off. Get the P28 chipped properly or find a P30 ECU. http://www.pgmfi.org

 

the ecu is chipped. Mugen chipped. but i don't know if it for the b16. how can i tell? do i need to open up the ecu?

Thanks

 

I opened it up. There is a sticker in there on a chip that says, " 20020409MG" Then beneaht that it says that it has a 9500 rpm and 5700 vtec. So would this be okay for my motor?

thanks

 

 

I've got a Euro P28 in my car.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hb_racer &raquo;</TD></TR><TR><TD CLASS="quote">I opened it up. There is a sticker in there on a chip that says, " 20020409MG" Then beneaht that it says that it has a 9500 rpm and 5700 vtec. So would this be okay for my motor?

thanks</TD></TR></TABLE>

I bet you are running way too rich.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jim Truett &raquo;</TD></TR><TR><TD CLASS="quote">

I bet you are running way too rich.</TD></TR></TABLE>

How can I tell if I'm running too rich? and what gives you that impression?

thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hb_racer &raquo;</TD></TR><TR><TD CLASS="quote">

How can I tell if I'm running too rich? and what gives you that impression?

thanks</TD></TR></TABLE>

Smell your exhaust and look for black soot on your rear bumper. I have seen the MUGEN fuel and timing maps. Research the program you have on http://www.pgmfi.org

 

thanks, i'll check it that way. I went to that site and I don't really understand what is going on. If i am running rich... all i could really do is go for a tune right?

thanks

 

If your plugs:
Black - your car is running rich.
White - your car is running lean.
Tan or light gray - your car is running perfectly.
* Some people like to run a little rich than other. It is a personal choice.

Well i know you guys are talking about OBD-I but for the image that the JDM ECU is smaller than USDM does not go for OBD-II the 2000-2001 ECU's right?

 

i have a obd pr3 ecu is that good ? any weak points ?