anarchy:

Re: Emissions

1) Is the donor car for the 3.0 engine a CA registered car? If so, the engine has already been subject to CA inspection, and, presumably has passed at some time.

2) The increase in displacement favors a reduction in NOx. For a given test load on the rollers, the throttle opening will be slightly smaller, the cylinder pressure and temperature slightly lower, and with slightly lower combustion temperature, the % of NOx reduced.

3) By retaining all the 2.6 injection and ignition components, the mixture preparation and spark timing are unchanged.