Its not always about MPG

[ksa8907]

Lowering springs, replace side mirrors, underbody aero, rear diffuser and kammback. Those are my picks

[COcyclist]

Originally Posted by Ecky

As for the sides, even a tiny spat at the top of the wheel arch is going to give most of the benefit, since that's where the tire is moving most rapidly against the wind.

Perhaps I am being picky about terms but I would like to see some consensus on what we are calling spats and what we are calling skirts. I was under the impression that spats are the little plastic rectangles that most car makers are using in front of the tires, like the white spats we wore to cover the front of our black shoes in marching band (or the massive ones on the green Jetta).

In the 50s, fender skirts came down over the top of the rear tire. In the 90s we got side skirts that lowered the rocker panels between the front and rear tires.

OP- I think you will have to go full Basjoos on this to significantly decrease your Cd. I have found air dams all get ripped off sooner or later. I am using a full belly pan with diffuser, inner and outer side skirts and small spats in front of the tires. All have stayed on winter and summer and have greatly increased coasting distances and mpg in my experience. A full boat tail is too hard to live with day to day for me and has not been done yet on my car.

[cRiPpLe_rOoStEr]

Even though the rear live axle would presumably make it harder to get a full belly pan, I'd give it a try. Rear diffusers might help a lot too. Messing with smaller mirrors is something I wouldn't be so comfortable with, but maybe it could be worth if their aerodynamics is better. For smaller vehicles I'd often recommend the ones out of some sports motorcycle which usually have a more aerodynamic housing, but maybe if you set them a little further back than stock position it may not be so bad at all.

[Tahoe_Hybrid]

Originally Posted by cRiPpLe_rOoStEr

Even though the rear live axle would presumably make it harder to get a full belly pan, I'd give it a try. Rear diffusers might help a lot too. Messing with smaller mirrors is something I wouldn't be so comfortable with, but maybe it could be worth if their aerodynamics is better. For smaller vehicles I'd often recommend the ones out of some sports motorcycle which usually have a more aerodynamic housing, but maybe if you set them a little further back than stock position it may not be so bad at all.

I thought about using some 2015 model they are smaller and more Aero shaped but it would really kill my budget it's like 300ea since i have DL3 mirror trim level

power folding, signal, auto dimming ,heated etc..

Everything nicely tucked in above the frame including the drive shaft, tell the rear differential pumpkin.. slightly sticking out

also the belly pan would need an access panel for oil changes i do them every 4500 miles or so+- 100 miles

[Daschicken]

Originally Posted by Tahoe_Hybrid

It has very aggressive DFCO. That is how i'm able to get that many mpg in the first place..

I suspect the Electrical motor is spinning the engine in DFCO... with a OBD reader you can see 0.00v on the upstream o2 sensor. that mean no fuel to air ratio.


when i first saw that i thought my sensor was broken or some other issue..


since there is no "engine braking"
it feels like it's in "neutral gear"

if I shift it into Manual Mode it has "engine braking" and you stop pretty quickly

Are you saying aggressive as in, it barely slows down? I would interpret aggressive as sudden and strong braking action.

The scangauge says my Accord is open loop when DFCO'ing. I don't have the capabilities for monitoring sensor voltage. DFCO in general means cutting fuel while slowing down. The electric motor doesn't have to help spin the engine, as the momentum of the vehicle is already doing that. It may be true that the motor is helping spin the engine under DFCO, but it is also likely that manual mode causes regen, resulting in that increased braking feel.

Originally Posted by oil pan 4

The new energy saver tires with normal 34 to 36psi get the same milage as the warn out ecopia tires with 44psi.

That's good, cause i've got some worn ecopias and am about ready to swap to the energy savers.

[Tahoe_Hybrid]

Originally Posted by Daschicken

Are you saying aggressive as in, it barely slows down? I would interpret aggressive as sudden and strong braking action.

The scangauge says my Accord is open loop when DFCO'ing. I don't have the capabilities for monitoring sensor voltage. DFCO in general means cutting fuel while slowing down. The electric motor doesn't have to help spin the engine, as the momentum of the vehicle is already doing that. It may be true that the motor is helping spin the engine under DFCO, but it is also likely that manual mode causes regen, resulting in that increased braking feel.



That's good, cause i've got some worn ecopias and am about ready to swap to the energy savers.

RPM is not married to the Speed in "Drive Gear"

50mph or less it's 1,000 RPM engine speed w/DFCO
above 55 the RPM is 1500 w/DFCO i.e 85mph

what i meant about aggressive is it drops to v4 mode or v4-DFCO

if I have it in M1-4 gear then engine braking occurs RPM is married to the speed.


there is not much drag with the regeneration.. it's not very noticeable while in Drive.



on the accord you should be able to use an OBD reader to get the sensor voltage

[Frank Lee]

Please with the ridiculous fe claims. The fuel log shows the truth. "... almost the same mpg as a Metro..." Give us a break.

"It's not always about mpg"- got that right. For most, most of the time, it isn't. It's about impressing people that don't even know them or care with conspicuous consumption.

[Tahoe_Hybrid]

Originally Posted by Frank Lee

Please with the ridiculous fe claims. The fuel log shows the truth. "... almost the same mpg as a Metro..." Give us a break.

"It's not always about mpg"- got that right. For most, most of the time, it isn't. It's about impressing people that don't even know them or care with conspicuous consumption.

I had problems with the electrical causing issues with the Engine control Module & hybrid controller.. Preventing EV and auto stop from working correctly over the last year...

it will be higher this month. as i fixed the issue the positive cable was caked on with dirt and oil... it will be in the 24-25 range for the city. this month..


also i said 40-48mpg could be possible if i could lower the drag. a bit as it will be in EVT mode.more often . which runs the engine at 1,000 rpm at 38mph to 48mph..


the best I have gotten was 31.2mpg on the highway.
as i was able to keep in in the eco mode most of the time.. 40+MPG would be possible on the highway... with some aero mods..


I'll make another entry one for City and one for highway so everything will get deleted and re install the numbers

[oil pan 4]

My wifes Hyundai sonata gets between 40 and 48mpg and it'd a full size car that sits fairly low to the ground.

[Tahoe_Hybrid]

Originally Posted by Frank Lee

Please with the ridiculous fe claims. The fuel log shows the truth. "... almost the same mpg as a Metro..." Give us a break.

"It's not always about mpg"- got that right. For most, most of the time, it isn't. It's about impressing people that don't even know them or care with conspicuous consumption.

don't worry my 6.0L is doing a bit better then that 3.0l engine you got there.

what i'm worry about is making sure the battery does not go flat at this point from it sitting about it's 4900$ for a replacement.. Yes i can afford it

I rather invest that once the market bottoms out in the next week it should be crumbing by Monday or Tuesday.. it's going to be a real shell shocker market correction... it's going to drop down to about 13-14k. when it goes back up i could buy many batteries. then with the 5k = 30k = 1 free battery

yeah I only got 18.4 last time but it was idling for 4 hours but the majority of the time in autostop(had to keep warm waiting inline at the store not for Toilet paper (just for general items for the week) ( i stocked up on TP & water months ago when they first mention it back in January ..) 200IQ!