Hey all,

I dunno what's happened but since cleaning my egr ports, replacing spark plugs and seafoaming im getting some truly remarkable gas mileage.

I filled to the brim and im currently about a quarter tank left with 314 miles traveled.

That's about 100 miles per 3 gallons! 33mpg...

Hopefully this isn't a one time fluke because I could get used to this. And I haven't really changed my driving style, highway main but a good bit of city (I work downtown)

Everyone always shares their grief, thought id throw in some awesome.

 

cool

I get that in my 6 everytime

its because u did what u did

 

cool! I only get ~17m/g on my 02 tl-s. I am attempted to do these things as well. Questions though:

1. Is it difficult to clean egr ports?

2. I heard horrible stories about seafoaming? Is it too risky to do that for a high mileage car (~125k miles)

Thanks guys.

 

I get that regularly.

TL-S will get slightly less (~1-2) MPG.

 

My eyes still well up with tears reminiscing when my 02 TL-S got 41 mpg on the freeway -- well over 500 miles per tank -- those many years ago.

 

I just got back from filling up my 03 TL-S. Took 14 gallons to fill up and I had 415 miles on the trip odometer.

 

You know, fuel gauges aren't really linear usually. You should measure it by recording your miles at fill up. That said, 33 is what I get on the highway when I measure the MPG correctly. I've always chalked it up to the pulleys because I don't think any of my other mods would really help. Also I get that 33 at 75MPH. I've always been amazed that I beat the manufacturer's fuel economy rating by 4MPG at such a high speed. Oh and I have a Type-S.

 

41MPG is probably more like 600 per tank. I'm getting just over 500 per tank at 33MPG. It's a huge (I think 17.1) gallon tank. And 41 is insane. I don't even see how it would be possible just due to aerodynamics and everything.

 

^Thanks guys!

yeah, I'll take note of the mileage next fill up.
I had been averaging 20 so to get 12/13 more per gallon is welcome.


and I have 200+k as you can tell by the photo. the seafoaming is painless and simple and pretty quick. I did both (gas can and vacuumed through intake)

EGR ports don't take very long to clean either, just a wirebrush and degrease

 

Ya to do the mileage, just reset the trip odometer when you get gas. Then next fill up you can divide the miles by the gallons. You'll find that when you do it right it's way more accurate than trying to read the gauge.

I'm actually thinking of getting one of those new Garmin EcoRoute HD things to go with my Nuvi so I can get accurate instantaneous MPG. Then I want to do some playing around to figure out what MPH is optimal.

 

we you being drug down the highway by a rope for half the time?

 

that's actually how I always do it lol. I was just driving and noticed my gauge was close to quarter left and saw 314 and got excited.

UPDATE:

I just got more gas, tank empty, filled 12 gallons into full, went 389.6 miles = 32.5 miles. I'll take that!

 

wow, bout time I get to sea-foamin!

 

i always average around 30mpg highway cruising at 80mph on the highway. and i have never done seafoam or anything still on original spark plugs too lol. its the city mileage and premium gas that's killing me ~18mpg. i also use scangauge 2 and it reports sometimes instant mpg of 35-37 when cruising at 65mph.

 

Man what am I doing wrong?
I'm only getting 387.2 miles on my last tank fill up
(I was about to start a new thread on mileage, lol nice timing)

 

400 miles is good. thats more than i get when i do all city. i only get +30mpg on the highway.

 

I average about 300 miles per fill up. One of the downsides of living on an over populated rock.

 

I get 24 with the a/c on doing 90

 

Yeah our cars are hyper efficient on the highway, absolute garbage in the city. It's really sad. If I only did city, I spec that I'd probably only get 14-15 mpg

Oh and I NEVER use AC, seriously turning the AC on is like letting my car binge on gas. Full tank went 180 miles highway cruising from Albany to NYC ~75 + AC

Same ride back up? ~75 back windows open 312miles

I might need to check that out

 

My '03 TL would get 33 mpg without trying on the freeway

And I measured gallons pumped vs. odometer.

 

You might have something wrong, or you're driving hard. I get no less than 22MPG on any tank, even in the city. Maybe some Seafoam is in order?

 

well I haven't tried using the AC since EGR port cleaning, spark plug change, seafoaming.

maybe this will have fixed it

the AC works really well though, blows ice cold

 

Our cars should get ~19 on the city, and ~29 on highway. 14-15 means something is wrong.

 

Didn't Mythbusters prove that you get better MPG with the A/C on and windows up then driving around with no A/C and the windows down?

 

^ I've heard that before as well

 

that is a fact

 

Actually, it depends on the speed. I believe the number was 55mph from a magazine I read. Either way, the best MPG is windows up and a/c off, just sweat it out lol.

 

On the highway yes, you want to reduce drag as much as possible.

 

I think 24mpg is crap

 

^agree but we take what we get right?

I'm personally ok with anything over 20mpg, I've never owned a car that consistently got better gas mileage than that so I won't complain

 

Thats Impressive!!! Being Said that You Should check that ABS Light ASAP....

 

Yeah i average about 275/13-14 gallons... The car does what it's rated at in the city, so I'm not complaining too much. haha

My AC is always on and still get 275/13-14 gallons. haha

I would love to take my car on a highway trip, but it's way too low... LOL

 

i agree i noticed AC kills gas mileage pretty bad on this car.

 

Ahh haha I already fixed that problem, but I don't have the proper access to remove the light. I refuse to pay acura 100$ to "Diagnose" so that they can realize it's all fixed and then turn it off.

It was a wheel speed sensor, pulled it when I lowered my car

 

try an ecu reset by clock fuse removal method for abs light--might work

mileage differs on direction of trip? the country is not flat! more uphill going home?

ac on is the rule here!- I didnt buy the TL to go slow and sweat--its got better ac than the house!! and sometimes gets used as a temporary human cooling unit--
a run down the freeway to cool myself off!!

sidenote on ac use-from the book (especially helpful to hot area ziners)
start car, open rear windows- turn ac to manual- recirc OFF
fan on 5,start driving--once you get to ~45mph the low pressure/vacuum effect created by open rear windows will suck hot air out the rear windows and pull colder air thru the cabin from the ac vents

Once its cooled down from 100 inside the cabin- set ac as desired, close windows and sunroof- enjoy
Its smart to switch from recirc to fresh sometimes = to maintain moisture and fresh air input for you to breathe

Note for noobs to seafoam - that first treatment did great!! now repeat vac and gas--or twice thru gas- after a month or 2, then good for a year

Remember to clean the TB air plate!!!! affects idle and airflow into engine- it gets coated with oily crud from PCV system

 

After doing a through/squeaky clean TB air plate and bore cleaning, I still get an occasional sticky gas pedal. My thought process is that the pivotal points of the air plate are sticking for whatever reason. Is there a way to apply lube these points, or the whole inside bore for that matter?

 

So pull the clock fuse? Will do, I have to replace the LED in the clock anyways, I'll be pulling it for that as well

 

Lube up the TB cable.

 

Nice.

 

yea I noticed that last couple days that my mileage kinda starts to drop around < 80MPH
and the speed that mythbusters tested for A/C use was 60MPH, below that you should open your windows.
Anyone else open certain windows a certain amount to get max airflow?
like for EX: I never have one window open I open the front driver one a bit more than half, tilt the sun roof, and have the opposite rear window open all the way. works wonders.