Valve adjust for 84 528e - with 87 325i cam swap

I'm thinking that I have the M20B27 motor that the previous owner threw an 87 325i cam into. It was a "popular" swap since the newer cam was cheaper, more readily available and it made the 528e a bit more zippy.

However California Emissions inspectors turned up NOx numbers that were a bit too high.

The spec is to adjust .010 but I'm thinking that .013-5 might help to leave unburnt fuel in cylinder enough to improve the numbers.

Any thoughts?

I just punked out, put a new cat on and passed.

In two years it will prolly need a new cat