Tested rpm-mpg

[Cobb]

vrmouseyd15b, whats the check engine light for? Some cases that can cause the computer to not allow lean burn if equipped and cause the fuel system to run at a default afr rate vs relies on the o2 sensor(s).

Think I do 2300 rpms at 70. Once you pass 70 the cvt starts to very the ratio and rpms start to flutter or float up and down. Need to reduce rolling and aero resistance or just lock the cvt ratio once merged into traffic.

Hersbird, thats what Ive said and the hybrids should be required to start the test with a dead as possible the car will let. It can take 7-14 miles to burn off a full charge on the gen 2 insight and I imagine a good bit more for the prius and so on depending on the vehicles battery size. In the mean time city mpg is artificially high.

[drainoil]

Originally Posted by PaleMelanesian

Exactly! Honda has been downright stupid with gear ratios since 1995. Exceptions were the HX which was ok but not great and the Gen1 hybrid but that had other stuff tacked on. Even now, the new Hf model they're advertising... automatic only.

Yes and their vehicles got bigger and heavier. I don't know if Honda had a change in management in the mid 90s or not? They seemed to have gotten away from what they once were.

[vrmouseyd15b]

Originally Posted by Cobb

vrmouseyd15b, whats the check engine light for? Some cases that can cause the computer to not allow lean burn if equipped and cause the fuel system to run at a default afr rate vs relies on the o2 sensor(s)

No check engine light. that's my "lean burn indicator" / happy light. I'm on a jdm p2j series ECU. they should all have an "econo (lean burn)" light. I think it's at pin a30, and I'm sure it's a switched ground. I bring SWITCHED 12V POWER to one side of the bulb, and pin a 30 to the other side of the bulb. here's a shot with KEY ON, ENGINE OFF:

EDIT: When I said "they", I meant the p2j family of ecu's but - I'm not totally sure




my "happy light / econo light" Is above 4500 rpm, Check engine light is above 5500 rpm. I hate seeing the check engine light because you are right, check engine light = no lean burn!

[vrmouseyd15b]

Sorry, I've been AWOL all day yesterday - road tripped into Cincinatti to pick up a second vx tranny from fellow ECOMODDER turbovr41991 !!

He's got one more VX 5spd transmission ready to go for $250 - http://ecomodder.com/forum/showthrea...ale-28931.html

Real cool dude- we met at Harbor freight by his house - and he brought me coupons!!
Thanks turbovr41991

This tranny ( and lean burn ) is how I broke 46 mpg doing 65 - 70 mph on the highway - no aero, no EOC, full interior, no kill switches or other cheating - power steering and a/c functional!

[bestclimb]

Originally Posted by basjoos

This shows the potential mileage that the manufacturers of all of those high cruising RPM MT cars are leaving on the table that could be attained via an inexpensive gear ratio change. Those 40mpg MT Fits and Yarisis could easily be 50mpg cars running in Prius and Civic hybrid mpg territory if they were geared properly for highway cruising and their engines would also last longer.

How profitable for honda and toyota are their hybrids compared to a bottom of the barrel fit/yaris?

[redpoint5]

Originally Posted by bestclimb

How profitable for honda and toyota are their hybrids compared to a bottom of the barrel fit/yaris?

I don't have any figures on this, but the fact that the gov't subsidizes them leads me to conclude they are extremely profitable.

[PaleMelanesian]

Originally Posted by drainoil

Yes and their vehicles got bigger and heavier. I don't know if Honda had a change in management in the mid 90s or not? They seemed to have gotten away from what they once were.

Soichiro Honda (November 17, 1906 – August 5, 1991)

[Grant-53]

Japanese cars have gotten larger and US cars have gotten smaller over the last 30 years.