bad gas mileage

[Renzo]

I have a '95 3.4L with 133K miles on it and i get 280 miles a gallon. I thought that was pretty bad but you guys have newer cars with less miles and i get a lil' bit better mileage. I guess it might also be ur mods and stuff

[00firebird]

dont things like intake and exhaust 'supposedly' give you better fuel economy ? more mpg

[Renzo]

Thats what they told me when i got my Flows. I also got the K&N air filter and was thinkin' about the cold air intake but since my car's got 133k on it, would it be worth it?

[V8 Killer]

Originally posted by 00firebird:
dont things like intake and exhaust 'supposedly' give you better fuel economy ? more mpg

Their suppose to because they basically make the engine work more efficently..

[ChevyGuy1022]

Originally posted by HeadyFirebird'00:
I presume its around 1 to 1.5 gallons of gas, at the "E" line or a little bit before it.My gauge will go past the "E" a smidge. My "Check Gauges" light lits up at 2-3 gallons left. I rrealized this after i topped the tank. The pump always says between 13-15 gals. filled up. Thus leaving 1-3 gallons that existed in the tank prior to fill. .... And 2001s have a 16.8 gallon size tank I believe.

My 2002 supposedly has a 16.5 gal tank. If it gets below E, it'll take over 17 gallons. Our fill tubes can hold about an extra gallon or so.

[HeadyFirebird'00]

i believe it.

[Yaba3800]

no one actually said anything helpful on figuring out why I am getting such bad gas mileage. It doesnt make sense that people with the same motor get a hundred miles per tank different. I have a 96 completely stock(except for 160 thermostat) 3.8l camaro. I can drive slow or fast It doesnt matter. When I drive fast I get 19!!!Whyen I drive slow I get 15!!!! that doesnt mnake any sense! something is wrong with the cars getting 220 miles per tank.

[ChevyGuy1022]

Originally posted by Yaba3800:
no one actually said anything helpful on figuring out why I am getting such bad gas mileage. It doesnt make sense that people with the same motor get a hundred miles per tank different. I have a 96 completely stock(except for 160 thermostat) 3.8l camaro. I can drive slow or fast It doesnt matter. When I drive fast I get 19!!!Whyen I drive slow I get 15!!!! that doesnt mnake any sense! something is wrong with the cars getting 220 miles per tank.

You might have just answered your own question. At 160*, the computer keeps the injectors open for a longer pulse to accomodate for the lower temperature, resulting in a somewwhat rich mixture. Rich means imperfect combustion with results in lower mileage.
I dont understand the fascination with 160 stats. The idea of combustion works on heat and expansion, so why make it colder? It would only impede the expansion of the gases. I do understand the computer retards timing when the temperature gets up high, but with our cars, they shouldn't run themselves over 210 anyway, which isnt hot enough to hurt the timing. ::shrug:: Just my two cents.

[38fury]

Most engines make the most power when they are running at 210, i dunno you've noticed this but when LSx motors hot lap they just get faster, the only thing diff. about LSx's is that they have that compsite intake, your intake manifold gets too hot and robs that power, but an LSx can run for four hours and the intake will be cool to the touch.

[RGB]

Installing my 160 thermostat took me from 24 mpg to 20 mpg.

[grayman]

Originally posted by Yaba3800:
no one actually said anything helpful on figuring out why I am getting such bad gas mileage. It doesnt make sense that people with the same motor get a hundred miles per tank different. I have a 96 completely stock(except for 160 thermostat) 3.8l camaro. I can drive slow or fast It doesnt matter. When I drive fast I get 19!!!Whyen I drive slow I get 15!!!! that doesnt mnake any sense! something is wrong with the cars getting 220 miles per tank.

people are posting "per tank"...we need to talk in miles per gallon. talking tank will get nowhere.

those posts about the thermos are quite helpful though.

[Need4Camaro]

Well I used to get 380 + to a tank with my 97 RS, old fuel filter, stock plugs / wires, old oil, bad airfilter and I drove like a MADMAN and it NEVER EVER got less than 380 to a tank... Till recently... got less and less and then I did a tuneup... (Plugs, Wires, PCV, Fuel Filter, PVC, Airfilter, Oil Change) It helped alittle but now I'm getting around 350 - 370 to a tank. How much do 97 tanks hold anyway? I THINK they were 15.5... or were they just 15?

[00firebird]

Originally posted by grayman:
</font><blockquote>quote:</font><hr />Originally posted by Yaba3800:
no one actually said anything helpful on figuring out why I am getting such bad gas mileage. It doesnt make sense that people with the same motor get a hundred miles per tank different. I have a 96 completely stock(except for 160 thermostat) 3.8l camaro. I can drive slow or fast It doesnt matter. When I drive fast I get 19!!!Whyen I drive slow I get 15!!!! that doesnt mnake any sense! something is wrong with the cars getting 220 miles per tank.

people are posting "per tank"...we need to talk in miles per gallon. talking tank will get nowhere.

those posts about the thermos are quite helpful though. </font>[/QUOTE]and how the hell do you know when youve driven on a gallon? all you can do is divide the whole tank by how many gallons it holds.

[Ju5t_B3at_Me2005]

i have the exact same prob on my car as the original poster. i have poured in injector cleaner, chked tire pressure multiple times, always filled it up with 93 octane, and havent ever even installed my 180 thermo! (also have 3.42's) yet i get about the same 220 to the tank no matter how i drive. my car is an 02....with just over 26k on it...wtf is up with this?? new it got right at 220, then with intake exhaust, it actually seemed to go down. only way i get awesome mileage is if i drive on the highway, and even then i only get about 260 sumn. i never let it get under "e" though, always fill it up right as its approaching it...i wish i got better mpg, because this is ridiculous :(

[Ju5t_B3at_Me2005]

i have the exact same prob on my car as the original poster. i have poured in injector cleaner, chked tire pressure multiple times, always filled it up with 93 octane, and havent ever even installed my 180 thermo! (also have 3.42's) yet i get about the same 220 to the tank no matter how i drive. my car is an 02....with just over 26k on it...wtf is up with this?? new it got right at 220, then with intake exhaust, it actually seemed to go down. only way i get awesome mileage is if i drive on the highway, and even then i only get about 260 sumn. i never let it get under "e" though, always fill it up right as its approaching it...i wish i got better mpg, because this is ridiculous :(