[Jake Raby]

Those values aren't horrible and I'd say these are normal for a 5 chain engine of 55K miles.

Once cam deviations reach 3.5* I will not touch an engine for any reason in regard to mechanical updates, like the IMSB and etc. This is mainly because once our hands touch something we assume responsibility for a lot more than we should have to, and if the CEL illuminates for ANY REASON with a fault for anything to do with camshafts or positioning then the finger flies this way. That doesn't happen, because we don't give it the opportunity.

We either don't do the work and disqualify the engine, or the work to restore the camshaft deviations is carried out along with the preventive work.

Cam deviations impact MPG after they reach only 2* or so and we start seeing added fuel trim after 4* as the ECU tries to mask the issue.

Your values can change based upon engine temperature, oil temperature and environmental conditions. When carrying out any sort of comparative analysis its imperative that the variables be reduced to a minimum and that the tests be done at the same temperatures and etc. If they are not the results will be all over the place.