ok, on my crx when i had my a6 in there i would always get black crap all over the back of my car and my exhaust tip would always be real black after driving for like a week. I just thought it was there cause my a6 was getting old.
anyway now i have a zc in and it dose the same thing. it isn't as bad, but after like a week of not washing it you can see all the little black spots everywhere. What is this from??? i am still running a pm6 ecu, is that why???? someone said i might be running too lean. how can i fix this problom, and what is that black ****?????

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cr-x si &raquo;</TD></TR><TR><TD CLASS="quote">ok, on my crx when i had my a6 in there i would always get black crap all over the back of my car and my exhaust tip would always be real black after driving for like a week. I just thought it was there cause my a6 was getting old.
anyway now i have a zc in and it dose the same thing. it isn't as bad, but after like a week of not washing it you can see all the little black spots everywhere. What is this from??? i am still running a pm6 ecu, is that why???? someone said i might be running too lean. how can i fix this problom, and what is that black ****?????</TD></TR></TABLE>

It could be the ZC is running rich. Are you still using the PM6 ( i think thats the Si ecu). That could be the problem. I guess worst case deal would be worn rings or burnt valves. How do you like the zc over the a6? Is it worth doing? Im considering a dohc zc or rebuild the a6.

 

Ya i am still running my si ecu. someone told me it could be running to rich. how can fix that.

and i love my zc! it pulles a lot harder through the powerband than my a6 did. and i have't even drove the car with the right ecu in yet. so it should run even stronger as soon as i get my pm7 or pg7 ecu.
but a built a6 would prolly put out more power than a stock zc. either option would be good. but u have more potential w/ a zc. my .02