I have a 94 Integra GSR. I've been running with the Mugen chipped p28 ecu for 'bout 10 months now. Today I decided to put the stock ecu back just because I was bored...lol. As soon as I turned the car back on with the stock ecu, the car was idleing very low (felt like it's goin to die), the engine was shaking a lot, and the car got MUCH louder. So I took the stock one out and tried the Mugen ecu again. The car was back to normal and idled fine... Is my car used to the chipped ecu? Why my car didn't run right with the stock ecu? Please help, thanks guys.

 

Your timing may be off. The chipped ECU may be able to work with it.

 

so...is it bad to use the stock one now?

 

did you get any CEL's With the stock ecu plugged in?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TeggyStevey &raquo;</TD></TR><TR><TD CLASS="quote">so...is it bad to use the stock one now?</TD></TR></TABLE>

Plug in the stock ECU and check your timing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by god.loves.ugly &raquo;</TD></TR><TR><TD CLASS="quote">did you get any CEL's With the stock ecu plugged in? </TD></TR></TABLE>
nope

 

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

Plug in the stock ECU and check your timing.</TD></TR></TABLE>
How do I check the timing?

 

Try this:

http://www.c-speedracing.com/h...g.php