Jumping O2's???

[sick GN]

Just got my new engine in and am tuning it. It has an open exhaust, and is pretty much stock. The problem is that the o2's are jumping around at idle and while driving. They go from rich to lean and back. What should I check??

Thanks

 

[87gnNV]

That is normal. To get the numbers u need u need to go at WOT for a good run (3rd gear is best) Then look at the o2 readings 790 is a good number to aim at. Look out for knock .