Sorry if I screwed up any double posts, having some issues form my end. I hope any admin can delete if I doubled post anywhere. Hello and greetings! I bought a 2007 Toyota Corolla from a previous owner, who could only average around 36.6 Miles Per Gallon or so on the highway, and about 27 in "real world". However, I know you can get a lot more, from this car. So I increased the PSI to 40 each tyre, changed the oil to Pennzoil Premium Synthetic... light foot, basic basic hyper-milling techniques... I pull 42 Average so far with a mix of 33% City, 66% Highway. How can I boost it to the lower to upper 50's? Automatic, 4 speed... that was in May before I went back to work in Taiwan. So I have been car-less for a few months. But, when I get back home, no more wonderful easy convenient Massive Rapid Transit and high speed rail to connect me to where I need to go. So I need your help! Came with: Goodyear Tryes: Goodyear Assurance TripleTred, about 88% tread left (guessing obviously) bought in Taiwan: less than a week ago Drop in K&N Fuel Filter (equivalent of $14.95 @ 75% off Sale at local "going out of business" Autopart store) bought in the US: about 2 years back Scanguage II from Amazon.com :flag: BEST INVESTMENT FOR ANY MOTORIST, but you all obviously know that Considering: LED Lights, especially for DTRLs, what do you think? I can get them at about 10% less than Retail in the US, with no sales tax, and no shipping (pick up) here, in Keelung, Taiwan, however I am coming back to the US for a while However, the owner of the store warned me about LED's from his experience with his Toyota Vios... being the turn indicators will not work without modification to load resister/voltage... which got me confused and thinking. SOOO I need your help! 1) LED's, worth the effort/price for fuel economy? Safety is important to, so brightness/visibility? Any experience? Any experience/tips with this car (Corolla)? Any good install guides for LEDs you know of? I want to replace my DRLs/foglights/breaklights, and Turn Signals) maybe add high performance halogens for brights ( I live in Deer Country) 2) Tyre pressure the age old question... I am so confused, being confused from so many different conflicting sources. When I got my oil changed, they said I should have them at 30... the previous owner had them at 27:eyebrow:, I had them at 44PSI, and I was told its "dangerous"... what do you think I can get away with for a) traction b) fuel economy... and also, every-time I get service they always lower my pressure back to 30PSI... 3) Coast in neutral in an automatic/W Overdrive? Will this damage my car? Is it really better than letting the car "automatically" lower RPM when I am off the throttle? 4) What else can I do? The sweet perfect number I seem to pull is 42 average (the perfect number ha) Miles per gallon in this car. I cannot really exceed that. I took everything unnecessary out of the car, except for: Me, haha obviously, Spare/tools, Manual/docs and mats for dirt/mud, and the Radio/speakers. 5) Fuel additives? Calcium stuff, cleaners, etc... after market/add on stuff? Any advise would be appreciated! Thank you for taking the time to read this long post!