LaCostaRacer

Here's a link: http://ecomodder.com/forum/EM-hyperm...ecodriving.php

#1 tip- drive less that works for all cars

oneglory

I did a couple months ago, I was averaging about 25-27 before winter. Driving habits have been similar. The only big difference is the weather, but I can't imagine it'll drop that much even with the winter fuel mix.

I'm at 114k btw, tires pressure is spec, nothing else out of the ordinary. My v-tuned 9-3 turbo was getting better MPG than the TL and I used to drive that like i stole it.

JTS97Z28

iTrader: (4)

Its funny how these threads are popping up so much recently. Am I missing something, did gas prices take some huge drastic increase lately that hasnt effected the gas stations I go to? What happened that you really need to get a few extra MPG's out of your car? Sure its nice to always have your car running optimally, but lets face it, the only way to really see a difference in how much you spend on gas is to get a car designed specifically to get excellent fuel economy. Or, as recommened above and drive less.

James

RaviNJCLs

iTrader: (4)

That may be part of your issue. Increase the tire pressure a bit. I run about 34-35 psi cold with N2. I saw an increase in mpg from when I was running 32. It also took care of the flat spotting. And I do not see any abnormal tire wear.

LaCostaRacer

Indeed, one thing many of the past threads have mentioned is 'What does the MID indicate for average MPH?'. The lower the average speed, the lower the MPG is. Winter fuel will affect your gas mileage because it packs less BTU per gallon with the added oxygen- I have heard around 5% less energy content in the past.

I did jack up the pressure in my tires (for other reasons) and notice a slight increase in MPG- about 1 MPG improvement so try that. I'm running 37PSI.

Aretardedorange

iTrader: (2)

I followed IHC advice on using sport shift to get better MPG. I used to get 19 MPG when driving to class been using sport shift and following IHCs advice now I am getting 27 MPG. Plan on driving in sport mode 100% now. Been doing this for past two days.

oneglory

I did a test on the way home, I set the CC at 70mph and did about 40 miles on the way home from work and nothing moved. Not MPGs, not the average MPH. That doesn't seem normal to me - can my MID be not calculating right? I find it surprising that the average MPH didn't move at all. It just stays at 22/42 (mpg/mph). I only ask because the MPH used to move all the time previous.

I also did some shopping yesterday, before if I drove around the shopping center near me it'd drop to 19mpg or so then pop backup once i get on the highway. Yesterday I did my normal shopping center drive around (same time duration) and it stayed at 22/42.

Aretardedorange

iTrader: (2)

I am down to 24 mpg after driving 60 miles today. I feel like thats fair. Much better then the 16-18 mph I usually get.

vietxquangstah

iTrader: (7)

Can you quote IHC's post about how to use Sport Shift mode to gain MPG? 19 -> 27MPG is a huge jump. I'd like to try it out myself since I drive 70 miles a day monday-friday for school.

oneglory

I think I'll try running Torque tomorrow and see what that says about my MPG. Don't know how accurate it is though.

swoosh

iTrader: (5)

if i understood your post correctly, here is the trick....

the MID shows AVERAGE MPG (my 05 model does)....it calculates the average over the miles you have traveled and the gallons of gas you have used (estimate) and gives you the average mpg.....

try resetting the trip computer by holding down the reset button....this way it will reset and show you the average for "that" trip.....i reset it every time i do an oil change

oneglory

current miles traveled is about 880. I'll reset it (i've done it before), it'll give me new numbers for a while and then go back to 22mpg...thats what it did last time, but we'll see.

vietxquangstah

iTrader: (7)

lol... That's because you need to Reset your MID.

Think about it this way.

You traveled 800+ miles and your MID is displaying you the AVG MPH and AVG MPG for the 800+ miles that you have already driven. By simply putting cruise control @ 70MPH driving for 40 miles isn't going to make your AVG MPH/MPG budge much at all because the 40 miles you been driving on cruise control is very little compared to the 800+ that your MID has already averaged for while NOT driving with cruise control.

Hope you understand what I mean...

If you want real AVG MPG that is a bit more accurate, I highly suggest you RESET YOUR MID AT EVERY FILL UP.

This way the values you see (Avg. MPG / MPH) is actually based on that full tank of gas you just filled up. Reset it everytime you fill up and you will see your avg mpg for every gas tank which is more accurate.

swoosh

iTrader: (5)

^^^ THIS

i use an excel sheet for every fill up and hence i dont reset my TRIP COMPUTER every fill up else i would do that....i do it every oil change (7500 miles) so i know when its coming up and what mileage i got over the long run

jwr0ng626

iTrader: (1)

So is it safe to downshift in MT keeping >1200rpm without rev match? Is this also the best way to get the best mpg?
Will that wear clutch prematurely?

bjones0010

I think we all need better mpg

Esanchez8701

So for those who asked how many miles traveled i checked out the monitor from the dash and it stated 315 miles for 24 miles for gallon on average. Guess it got a little better. I am still going to put the drop in filter from K&N and remove that stupid resonator. Also anyone here ever use gas from Gulf ? Today I used octane 93 from these guys not the first time either. Living by me in new rochelle ny the price is $4.01 Rather then sunoco for $4.29 jesus so expensive but def gonna stick with 91 or 93 octane. Seems its getting a bit better.

Esanchez8701

ever hear of sonomax gasoline. There is one in brooklyn selling premium for $3.63 cents im wondering if any of you know about this gas ? Rather ask before putting it in my tank

SouthernBoy

Please elaborate so we can help with your question.

vietxquangstah

iTrader: (7)

never heard of it, try searching google for answers

SouthernBoy

My cold weather mileage hovers between 24 and 25 MPG and my summer highway mileage with the tires currently on my car can't seem to get past 32 MPG. My best in town summer mileage for a week of work commuting was 27.98 and my best summer highway mileage was 33.94.

Note, these are calculated figures and not from the MID.

RaviNJCLs

iTrader: (4)

What was you average speed per your MID on this 315 mile trip? It make a big difference if you averages 35 vs 50 mph. Highways in NY are not really highways.

Esanchez8701

It depends on the speed limit. I went about 45, 50 on average

Esanchez8701

yes i tried searching for sonomax but nothing comes up in regards to reviews

RaviNJCLs

iTrader: (4)

I don't mean by the speed limit. What does your trip computer say.

Reset the trip computer. Drive 300 miles, or whatever. Tell us what the average mpg, as well as the average speed based on the trip computer. The speed limit may be 50 mph and you will drive 50 mph, but if you are stuck in traffic for 10 minutes your average speed can be reduced to as low as 41 mph.

BTW....if you are speeding....we don't really care. We won't really hold it against you. I find it hard to believe you're doing the speed limit, or 5 above. The speed limit on the PA Turnpike is 65....I do close to 80. The reason I say this is if you're asking for true advise, then give us all the facts. Not saying you are not already doing that.

Esanchez8701

without a doubt im just stating the facts and the average speed it says 25 ,mph which would mean traffic good point. I try not to speed because i dont want any tickets i delt with a ticket for my old car 2005 tsx which was considered a total so ive been very careful

RaviNJCLs

iTrader: (4)

With an average speed of 25 you're probably doing a lot of stop and go or slow and go. Your shitty mileage is probably not due to the car but the driving conditions. I won't expect it to get much better.

Sorry.

Try this....Take a road trip. Find a nice stretch of highway where you can go 70 mph for an hour or so. Fill up, reset your trip counter, drive, fill up again and calculate your mileage.

ez12a

always rev match when downshifting, unless you're at a slow enough speed where the engine speed matches the transmission (literally at idle or just above it). usually like in parking lots where you press on the brake a lot.

I double clutch w/o rev match from 3rd into 2nd a lot for speed bumps since i slow down enough where 2nd would be near idle (staying in 3rd would have stalled the car).

honestly it's really not worth the possible 1-2 mpg and clutch wear downshifting towards a stop. Coast to the stop in the gear you were driving in until your engine speed reaches idle or near idle, then move into neutral. And as you presume, rev matching negates some of the savings of downshifting all the time to save gas.

swoosh

iTrader: (5)

am i the only 5AT whose rpms hang ???

for example if am at 41mpg in 5th slowing down to a stop rpms are near 1200-1300 rpm....and when i hit say 35 mpg and car automatically downshifts to 4th (SS mode)...the rpms will not be around 800, but infact around 1200-1300 itself....

GeaugaDog

In the winter time with avg mph of 23 i get 23mpg. You should be somewhere around there. Should be better in summer due to better fuel.

avs007

You guys can't just compare fuel economy to others without taking other things into consideration...

What kind of hills do you guys drive on?

I have two hills on my 40 mile commute... One at my house and one near the halfway mark... Even when I average 70+mph, I can average close to 30mpg on the flats... However, as soon as I get to the center hill, my instant-fuel economy drops to 8mpg, even if keep the revs below 2500 rpm. I have plugged in my OBD-II diagnostic scanner, and verified that when I hit the hill, the engine load reading spikes, and that's when my fuel economy drops like a rock. Even if I'm still feathering the gas, the fuel economy still drops like a rock on the hill... And that hill isn't even that steep, it's only a 6% grade. The hill I live on is closer to a 10% grade, and that murders my fuel economy reading on the way home, as I am usually going 50mph @ 4000+rpm, so you can see what that will do to my fuel economy on my return trip.

On way to work, once I get to the 6% hill my average fuel economy reading is between 28 and 30. Once I pass the 6% hill, I still have 15 miles to go, but my average reading never recovers past 23mpg. On way home, it hovers around 22 when I get to the hill at my house, then when I get home is has dropped to 17. Over the course of days/weeks, it settles around 19-21.

avs007

You coasting down a slight hill? I hate the way they did the grade logic on the 5AT. When I coast to the signal at the bottom of my hill, (50mph speed limit), when the car slows to about 35, it downshifts by itself and the car abruptly slows down. It only does this when I'm coasting down a slight hill. It gets so annoying that when I coast down, I have to make sure I don't let it slow to 35. I either try to stay above 35, or I have to hit the brakes to slow past 35.

LaCostaRacer

There is no way that you can boost mileage that much simply using SS. You need to compare apples with apples because something is different besides just SS .vs. auto. What was your average MPH for auto .vs. average MPH for SS? My guess is SS has a +20 MPH value or higher.

swoosh

iTrader: (5)

^^^ you need to read this thread:

https://acurazine.com/forums/3g-tl-2004-2008-93/better-mpg-using-ss-how-i-do-848425/

I agree with you point that nothing is changing between the technical of Auto and SS, but what is changing is the shifting point....

so if the ECU shifts at 2500-2800 on Auto and you shift at 2000-2200 in SS mode, you will see an increase in gas mileage...

LaCostaRacer

^ I agree that you might be able to get 1-2 MPG increase (maybe) but the retarded orange is quoting an almost 50% increase. If it was so simple changing shift points for the ECU and such, I would think that a multi-bullion company like Honda would have changed this to improve MPG- after all Honda changed from 5w30 to 5w20 for MPG reasons.

I'll try this my next tank and see if there is a meaningful improvement. As mentioned earlier, everybody's commute is different. My commute has a consistent 25-28 average MPH read from the MID and I consistently get 19MPG. So I'll look forward to seeing a modest 21 MPG with same MPH reading this tank doing SS then- I have no illusions of seeing 27 MPG.

I think it's amazing how thread topics change based on the price of gas. Now we're seeing a bunch of MPG related threads after the price of gas gets around or past 3.50 a gallon. After gas drops to $2.50 per gallon we start seeing threads about CAIs and performance related topics. We do have a narrow comfort band on the price of a gallon of gas I guess.

swoosh

iTrader: (5)

^^^ hahahaha yup....

there are couple things here thow:

Tire pressure (80% of max psi mentioned on tire)
Coast to stops with downshift in SS mode around 1000-1200 rpm
Easy in on the gas
Shift early

I think by doing all this you will see an overall 2-3 hp hike in all CITY driving....as you can see this wont change your highway mpg at all LOL....

but worth a shot

and am guessing the reason honda might have set the shift point to 2500 is coz of low TQ, so that the car doesnt feel sluggish....imagine a stock base 5AT....shifting at 2000rpm....you will be in 4th gear around 20-22 mph....how sluggish will that feel ?....

Chad05TL

my car got gas mileage like that (on the highway even) before I changed the transmission pressure switches. I suspect the transmission was slipping.

Esanchez8701

Update for my acura bro's I checked my computer again after fill up and after reading the eco forum i gained a couple more miles per gallon. For my commute to home from work or vise versa I got about 29-30 miles per gallon. Not too bad. With the traffic and stop and go i guess i was going about 25 mph i got 17-18 mph. You say better fuel in the summer and I agree with that. For the time being being light with the gas pedal is the best thing you guys can do rather then flooring it.

Salim 05 TL

My tl is a gas guzzler

swoosh

iTrader: (5)

^^^ its not your TL....its your right foot thats sucking on gas