G

So, after putting on my superdraggers and driving around a bit, I have noticed that gas mileage has decreased by about 5 miles per gallon!!! What is te deal??? Is there something that is wrong?? The only change I made in driving habits was actually not going into Vtec as much as I used to. Also, I now downshift to aid in braking. Other than that, I haven't changed anything, no gas change, etc. What is the deal?? Is it the exhaust??

CLpower

hmm, I went through a weird experience w/ my exhaust, I had the Apex'i w/ no resonator and usually got about 250 a tank for well over a year. I then installed a resonator and just a greddy SP muffler to my existing 2.5" piping. My gas mileage went up to 340 a tank on the first tank and everyone since.

CleanCL

iTrader: (4)

340 jeez, i only get like 250-280

G

Yeah I used to get about 280-300, But now, I am lucky if I hit 230!! I like the exhaust,but if this is going to persist, I will be taking it off!!

robeaneee

i get 360 a tank! and im STOCK baby

rezurex

really... i recently sold my HKS draggers as i wanted to go for a cat back system ( i didnt want to just add in b-pipe). i did notice my mileage go down, but not nearly as much as you experienced... thats nuts

CleanCL

iTrader: (4)

this also depends on how you drive and where you drive, most of my commuting is local streets, but if i hit the highway i can hit 300 and still have plenty of fuel

Linner

I heard your foot gets heavier after you start modding your car

Zapata

when i had my 5AT CLS in stock form i used to averag like 330/tank. It didn't change much with the intake. However, when i added headers/sparkplugs/exhaust i went up to 370-380tank of the same daily driving i was doing. I went to the track and really had a heavy foot but i'd get 380. Then i reset the ECU etc., It went right back down to 320. I think addition of h/sp/e resulted in the ECU running leaner than normal.

Sly Raskal

iTrader: (1)

Chaptorial

Ain't that the truth.

I'm down to like 17-20 mpg here.

CLSpeedfreak

If you don't like your exhause I'm still looking for HKS....

G

We will see what happens with more use, but I will keep you in mind if I decide to sell.

Andy, after you added your exhaust did it go down like this??

J.T.'s 3.2CL

What mileage are you 6 speeders getting? I get right at 300 a tank (20-21mpg) all city with some spirited driving and would love to improve that.

Sly Raskal

iTrader: (1)

20-21 as well. the heat in so cal doesn't help, neither does the poor air quality. when i first bought the car i was averaging about 24-25

NiteQwill

350 all city driving shift at 3.2K or lower, I've gotten 380-390 on a road trip east and back.

With more aggressive driving I get about 300.

Sly Raskal

iTrader: (1)

do you have any mods? intake? headers?

GEB

I usually get about 20 but the last 2 tanks of gas I've only gotten 18. I switched to Costco gas on the last 2 tanks and my gas mileage seems to have dropped! I had always used BP because the BP by my house has a great car wash. I'm going back to BP with the next tank.

robeaneee

use shell v-power..my mileage has gotten much better, and i can only attribute it to the gasoline since my car has been stock since the day i bought it

cmark

i have the HKS and i get 300+ miles per tank at 23+ mpg. i drive both local streets and highways prety equally.

Marine1

I have a 6-speed with headers. About 85% of my driving is on the highway. Combined city and highway I get 25-26mpg. On long drives of highway I get 28-31mpg@75-80mph.