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HI Paul

I did check with Eric... The EGR setting is enabled. ANd the most probable cause for high NOX is the EGR system. He also said the low BLM should be fine as the computer will adjust accordingly

I haven't had very much response on the TECH forum or the other site. I have been searching both sights trying to figure out what could be wrong with my EGR system. I did find:
- intake gasket blocking EGR ports to the heads
- too low FP will cause car to run rich as it tries to compensate for the low FP. That may be a reason my BLMs were around 112 instead of 128
- ported lower/upper intake causing the front cylinders to run a little dirtier.

I thinking about putting back the stock chips and running just the stock chip. I was going to pull the upper intake and taking a look at the lower intake EGR tower & see if it may be blocked. I was also going to replace the EGR... at which time, I will check to see if there is any blockage to the heads. If this weekend is good... I might switch back to stock headers & DP.

I am at a loss... If anyone else has any suggestions, quick fixes or a "friend of a friend that knows somebody".... let me know.

dave