[SirKeats]

I read a couple threads but was a little confused... mostly because I'm not certain as to the specs of my engine.

Does my '89 metro have the xfi cam? I know it's rated the same mpg as the xfi models... but isn't an xfi itself. I've been told they're essentially the same though.

Sounds like 2-3 degree advance is ideal for the xfi's and 4-5 for the non-xfi's. Just wondering which one I should go with.

If it matters - I'm at about 60% highway / 40% city... give or take. I keep it below 60mph at all times on the highway.

Thanks for the info!