Bit of an update I cleaned off the egr system and got rid of the code.
I also got the vacuum gauge installed
I also changed out the eBay filter in favor of a paper style. No specific performance or mileage reason however the oil type filters seem to always leave intakes and sensors in my vehicles dirty. The paper filters do a better job of actually filtering out dirt . the car came with the intake and I have not been able to find a stock intake system for under $80. The eBay filter had also worn a hole through the bottom of the filter element, as they always seem to, where as the paper style is more rigid and thicker with foam rubberish ends
Also has no effect on efficiency however I stumbled upon a civic clear timing cover on eBay. While not really of any important immediate use I feel this modification will add tons of residual value to keep the next owners involved In this car should I ever sell it
No real gas mileage update, I'm at 200 miles at a half tank of gas. I'll receive the cover sometime next week and post an update