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Andy,I think Kendall had a similar problem as you and could not pass the CA smog test unless he changed back to stock injectors and removed the Split Second box. Do a search - he posted on it extensively.There should be a procedure in the manual for testing if the EGR valve is working correctly. Just because the ECU has not illuminated the CEL does not necessarily mean that the EGR is operating correctly. It could be that the MAP voltages coming from the SS box indicates to the ECU that it is not in the proper range to operate the EGR. Just a theory.....Another possibility is clogged EGR ports (on the exhaust side), but we would probably have heard of this from other owners as the NSX ages.Good luck.
Andy,
I think Kendall had a similar problem as you and could not pass the CA smog test unless he changed back to stock injectors and removed the Split Second box. Do a search - he posted on it extensively.
There should be a procedure in the manual for testing if the EGR valve is working correctly. Just because the ECU has not illuminated the CEL does not necessarily mean that the EGR is operating correctly. It could be that the MAP voltages coming from the SS box indicates to the ECU that it is not in the proper range to operate the EGR. Just a theory.....
Another possibility is clogged EGR ports (on the exhaust side), but we would probably have heard of this from other owners as the NSX ages.
Good luck.
