Because Loading up the engine also produces better mileage per gallon of gas used.... However it does not improve in the engines fuel efficiency. It allows you to travel more distance for each dropplet of Gasoline invested. Now remember, Your engine will be MORE EFFICIENT at the RESONANT frequencys not matter what.. Thats why you produce more torque there.... What I should have said from the beginin ... perhaps spell it out... its that WHEN you combine Peak Torque RPMs PLUS 6th gear.... then you obtain the longest distance traveled per dropplet of gasoline...

I did imply it in my previous post however. I must admit, I really hate to spell it out word for word... I am sorry.

Open up your mind and realize that driving with a 6th gear and at your resonant peak torque RPMs you will have the best mileage per gallon ever!!! (disclaimer: I know its not posible for you to use those RPMs and drive your car in a public street/road and I am not implying you should try in any way. I am merely stating the facts known to me)


OH and do me a favor... please read my entire post before you jump On my throat... did you read the part......



What do you think I mean in this sentence?? Let me spell it in a diff way.... "you CAN expect to have better gas mileage while driving in 6th gear" Get it now?? You CAN'T EXPECT IN FIRST GEAR BUT YOU CAN EXPECT IT IN 6TH GEAR....


I am sorry if I sound as if I am chewing up on your face out but I got upset. Did you do any research on engines and fuel efficiency before you strangled me?? if you did, please pass the info of where.. so I can educate myself by studying it... please. Tell me where did you get your reference from.


Thank you.

Marvin

 

I do basically all-city driving (40 and under) and usually get around 12.5 MPG. Thought I was alone, now I see I'm not! That's even with a few nitrous hits here and there.

I think it's safe to say that you'll get the best MPG when your injector pulse-widths are the lowest, which would tend to happen at the lowest RPM where your MAP is 40 or under (no large load). Which would explain why we have a 6th gear. As long as you're not lugging the engine (lots of throttle), you'll get the best MPG with the lowest RPMs that keep you moving.

 

Actually my friend... going down hill, tranny in neutral and engine off..


Just messing with you dude. You rignt about that.. smallest pulse with... 6th gear.. lowest RPMs.. huh

If I keep my vacum at say 16inches I wonder how far and how fast can I go??


I give up man.


so..... Yes all of you are right!!!! and I am wrong!!!!

next tread!!


Marvin

 

When I first got my Z she was doing about 240 city and 300 highway, With the mods I now get 300 highway and a little less city only because in the city is when I have to drive like a maniac because people do not know how to drive!!

 

150 miles per tank!! Thats with a misfire. I drove 490 miles and just got back like 2 hours agao. I had to fill up like 4 times. It sucked *****.

 

highway 26 - 28
combined 20 - 22
city 16 - 18

 

I get about 19-20mpg with a mix of highway/city driving, mostly highway though.

A4, stock cam, 2600 convertor, 3:73's, full exhaust and an intake. I did notice a good bit of an increase when I installed the headers, a couple mpg's worth.

 

95 Z M6 stock ~70k miles - 29mpg hwy
95 Z A4 stock ~70k miles - 21 mpg hwy

A4's suck. That's part of you guys' problem.

I want my M6 back

 

here lately i have been getting right at 200 miles to a tank with city driving, but luckily it lasts me 2 wks between fill ups. I know that on the hwy the best i have done was about 306 miles on a tank. I have been thinking that 200 in the city is pretty bad and was going to post about this too. I just did new opti, plugs, wires, fuel filter, air filter, and egr and still get only about 200 to a tank. I think something is wrong but i dont know what else to do.

 

You guys are all forgetting that at the resonant frequency(best torque) the RPM's are pretty high. This might mean that the engine runs the most efficient, but all your accessories suck up more HP(power steering pump, alternator, water pump, A/C compressor).

Plus, in 6th gear at those RPM's, wind drag is the dominant force holding back speed, and reducing fuel economy big time.

Engine peak efficiency and fuel economy don't peak at the same RPM.

I average 21.5 MPG mixed city and highway.

Dan

 

last summer i went to panama city beach. i filled up in charlotte nc and drove all the way through sc and well into georgia with cruise set on 80 and a/c ON. the mileage was 395 and put in 15 gallons of gas. this equals 26.3 mpg. pretty good for a car with 200k+ miles on it!

i was going to see how good it was on the way back with a/c off but the girlfriend kept complaining about the heat...oh well!

 

Dang!!! I woulve love to know how many miles with the AC off.


Women, women, women. I know what you mean when you say she kept complaining.


They know we men dont complaint when they go on tormenting us with their continuios complaining (naggin).


My car does 216miles with 14.5 gallons of gas. mostly city driving.


Marvin

 

There is no reason why you shouldn't be getting at least 15mpg unless you just drive it hard. I get about 18ish in the city and 26-29 on the hwy...my combined mileage is usually about 21.

 

I've tracked my milage since the day I bought my car new in '97.

Best MPG ratings, on different occasions(all highway): 28.1, 28.5, 31.5, and lots of 27's MPG

Worst: All city driving: 15.1 MPG (third tank of gas ever), and a lot of 16's MPG

Dan

 

combined city/hwy , about 220-260 miles to a tank
all highway, 350 to a tank.