Thread: O2s for SC cars

Now that I've got the M90, I know my O2s should be higher than they were N/A. They're currently in the 920 range. Anyone think I should move them or just spark tune with it right there?

are you knocking? lean it out until you knock, then add a little fuel. from there then you start adding timing.

i started out with 10* of timing to etch out my fueling and then added more timing once i found where my fueling was supposed to be.

With the blower all warmed up I get as much as 6* at WOT. That higher CR is going to fight me for every degree of timing I want. With the engine warmed, but the blower still cool to the touch, I can floor it with no knock.

Lol, the IC is on the list, but not yet.

Anyone know what cells to adjust for WOT timing, so I can do like Bio said and run like 10* until I get my fueling ironed out?

The far right column in your spark table starting at around 4400 RPM and moving all the way down.

Originally Posted by DanGTP

The far right column in your spark table starting at around 4400 RPM and moving all the way down.

Does it matter if I have the HPT or DHP PT? I have the latter, for reference.

Ummm... I'm not too sure about DHP. I assume the tables are set up very similar.



You may want to lower the cells around the 10* ones just to make a smoother transition.

I think the DHP PT shows it in mG/cyl, but for that I can just move the decimal. Thanks.