# fuel efficiency? **URL:** \ **Category:** SON240sx Automotive\ **Created:** [December 31, 2007, 2:15am UTC](https://forums.speedlife.net/t/fuel-efficiency/112123 "2007-12-31T02:15:15Z")\ **Posts on this page:** 4\ **Page:** 2
**Author:** ![SpHiNxXx](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sphinxxx/32/5659_2.png) [@SpHiNxXx](https://forums.speedlife.net/u/SpHiNxXx)\ **Post date:** [February 18, 2008, 8:45pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/21 "2008-02-18T20:45:53Z")
wow… something is wrong with my car then… 250km/tank and thats driving like a grandma! 93 KADE with 200,000km no major mods just intake on 94octane ---
**Author:** ![DirrtyDevo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/dirrtydevo/32/5547_2.png) [@DirrtyDevo](https://forums.speedlife.net/u/DirrtyDevo)\ **Post date:** [February 18, 2008, 9:28pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/22 "2008-02-18T21:28:12Z")
before i got to bings meet last year at Sq1 i filled 1/2 a large NYF cup full of gas leaking from my filler neck/tank and pissed a steady stream 1/4 of the way to st.Catherine’s before it just started to drip every second and still got 2x more kms to my tank…120kms a tank 😑 jeez. fkd up ---
**Author:** ![Polar\_s13](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/polar_s13/32/5572_2.png) [@Polar\_s13](https://forums.speedlife.net/u/Polar_s13)\ **Post date:** [February 18, 2008, 9:33pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/23 "2008-02-18T21:33:46Z")
> [@AhmadG"](#): > > I have a new cat (1 month old), new O2 sensor (1 month old) and a brand new air filter. I just replaced the plugs with NGK Platinums and installed premium Bosch wires as well. I’m getting about 300km with 70% city and 30% highway. I believe the car is running rich because after I beat on it a bit, it starts to smell like rotten eggs, possibly indicating that the unburned fuel is going to the catalytic convertor. > > I am pretty frustrated and don’t know what to do next. I bought a PCV valve, distributor cap & rotor, thermostat, fuel filter and water temperature sender…gonna get them installed by a mechanic very soon. What else could cause this fuel efficiency problem? I’ll try giving the MAF and Throttle body a cleaning too once I get the chance. > > btw I’m running 5w30 on a stock KA24DE with an auto tranny and I use 91 octane most of the time from Sunoco…also I use winter injector cleaner with every fill up, bought from Crappy Tire. Why the hell are you putting 91 octane into a ka24de. ---
**Author:** ![spooolin](https://avatars.discourse-cdn.com/v4/letter/s/48db29/32.png) [@spooolin](https://forums.speedlife.net/u/spooolin)\ **Post date:** [February 19, 2008, 5:55am UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/24 "2008-02-19T05:55:55Z")
yea thats all HORRIBLE Lol… when I drove my 97 back from NY when It was stock… I got Incredibly good gas milage. I got close to 700 kms for a tank of fuel… Mind you that was ALL hiway through penslveinya. going to detroit. I cant believe some people here are getting suck low fuel milage… WOW lol… And you actually pass emmisions? lol My 98 eclipse gsx with 400 AWHP stil got good hiway milage… I would get like 500-550 a tank of 94. BUT when boosting all the time. the 880cc injectors didnt really care about fuel milage haha. [Previous page](https://forums.speedlife.net/t/fuel-efficiency/112123.md?page=1)