2010 Sport / AT / Navi / 18,000 miles / otherwise, stock:

Honda is "playing fast and loose" with the specs. on the Fits to jack off the buyers.
They say HP is 117 at 6600! ...

My engineering specifications calculated from their published figures equates to only 96.87 HP at 6600 rpm..

Plus, I don't get anywhere near the 27 mpg city with branded gas. Highway only mpg is very good.

Questions:

• Does anyone out there know a tuner / mechanic that knows how to fix this?
• Has anyone had MPG improvment using iridium spark plugs with a stock heat range?
• Is there any talk of a class action suit regarding Honda Fits ONLY based on lower than expected city gas mileage?

 

The fit has around 93-95 wheel HP (dyno proven), just like every car no manufacture states wheel hp. 117 is the crank power.

Secondly cars no matter what they are actually more so this type aren't forgiving on lead foots.. I typically get around 33mpg city, and 39ish highway, I can average around 44 to nearly 50 in country driving.

My sister has a 2008 Ford Focus in which she goes through brakes and tires every 15k miles, and only gets 20mpg, I guess she needs to start up a class action lawsuit against Ford, cause obviously it's the cars fault.

 

how are you getting those numbers? did you dyno your car? do you realize automatic transmissions dont get nearly the fuel economy the manual transmissions get? did you realize automatic transmissions are terribly inefficient? it's robbing power and killing your fuel economy.

 

Yep, I don't see the point in this thread.

I'm gonna go buy a Chevy 2500 HD and a 12000lb goose neck, if I don't get the window sticker estimated MPG I'm suing!

 

yeah pretty much. OP please sell your car and buy something different

 

That lady set precedent with her lawsuit. Now everyone is going to pull this stuff. I get over the 27mpg estimate and I shift between 4 and 5k. Now everyone is going to be like wait I didn't get the EPA estimate I'm going to my lawyer!

 

I will reply to you because you asked real questions rather than questioning my expertise.

Honda publishes as follows for my '10 FIT:
(engine) HP 117 @ 6600 (engine) Torque (lb-ft @ rpm)106 @ 4800



(Engine) HP is calculated from torque as follows:
(106*4800) / 5252 = 96.877

These (engine) calculations are IRREFUTABLE, therefore honda misrepresents yet again. I do not have time to go back and forth with "oh, this is wrong, and honda has another way, etc etc etc ......

So, I restate my questions: in my posting .... note: all of this is derived from an engine on a dyno and the formula is what is determined from the torque.

rsvp?

 

What the heck is this thread about?

The dealer told me my Fit was a 3 cylinder 1.3L with 43hp, You mean it makes more than they told me? Sick I knew it was pretty peppy!

 

I like the PM I just got from DommoPA

He says I'm a pot head with a GED, I feel honored that this guy can even operate the forum functions.

 

Well I had my Fit on a roller dyno and it made 111ps and the corrected number was 130.7ps. It's not stock, but I really don't know what you are bitching about. Every manufacturer lists the engine's power from an engine dyno and not real wheel power. Your engineering specifications...that made me laugh because it just proves to me that you can go to school, get a degree and still not know jack shite really.

By the way, are you related to the lady in California who just won a small claims case, but Honda is going to appeal it because the judge decided he is above the EPA and that the words "up to" are not good enough. Pardon my tongue here all, but phuckin' people and their frivolous lawsuits in the US. I should sue my guidance counselors and schools because they said I could be anything I wanted to be when I grew up, well I only race as a hobby and not getting paid for it so they were wrong. Wait though, they also said with hard work could be what I wanted and in this case with a LOADED family that I didn't have.

As far as your FE is concerned, you are in control of what your foot does and where you live. The majority seem to get what the car's sticker says or better. I only average 29mpg and I am ecstatic with this number because traffic around Tokyo is absurd and my right foot pretty much is made of lead.

 

This can only get better...

On a side note, I misread the title as "Honda Decepticon" so I expected to see some rice. I am disappointed.

 

dyno graphs are not linear

i really don't know where you got the HP number

 

I just laughed my ass off so hard Honda Decepticon!

My wife is like, what are you reading thats so funny? I said oh just this ill-informed guy on the internet.

 

Dude! But his calculations are irrefutable!

 

can you explain how this graph works?

 

oh. im sorry, i might be challenging his mechanical engineering

 

Guess what Chevy is really overrating their Z06, I'm going by your engineering prowess here.

(470*4800)/5252=429.55, yet they advertise the Z06 to have 505hp. Talk about gross overstatement.

 

You need to look at Honda's spec's closely. Max horsepower does not occur at the same RPM as peak torque. Peak horsepower is at 6600 RPM, but peak torque is at 4800 RPM. In any event, you are not going to be reving the Fit at 6600 RPM very often--at least I don't

 

Peak torque measure at an rpm is determined by rules in physics. From that, engine HP is calculated as I previously posted.

BTW, on the highway on long trips, I get 38+ mpg with the AC on and 70 MPH. I have been concerned about the low city MPG, especially since I am not a lead foot.

 

Man you just made me the happiest person in the world right now, I'm going go buy one, and sue them in turn for a free Z06, Chevy are teh liars!