I'm a newbie, i have a 97 se that just hit a 100k. I just change the oil, spark plugs, fuel filter, knock sensor and on my last full tank of gas I'm getting an awful 200 miles out of 3/4 tank. Is there anything else i need to change. Oh yeah my only mod is a intake, i drove about 50/50 city and highway on this last tank of gas. thanks in advance.

 

hey, i got a '97 GLE and just got a tune up today, had NGK Platinums put in, didn't get to measure a full tank yet but previously I got around 205-220 a tank, 50/50 highway/stop and go...made me broke when I was up in college

 

Air filter, PCV valve, clean throttle body & IACV, change O2 sensors, and maybe try putting some BG44k Fuel System Cleaner (the best one there is and it'll cost $20+ or the Chevron Techron Fuel System Cleaner thing for like $6). People have been getting 20+ MPG when they put in a new exhaust system

 

My gas mileage has gone up since I have got my budget y pipe and intake. I also had a full tuneup done, I now get a 26 miles per gallon driving mostly city and I have gotten 440 miles out of a tank numerous times.

 

Remember your AC will reduce your mileage too!