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Cheap ways to add HP

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Old Jan 15, 2014 | 08:10 AM
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Question Cheap ways to add HP

What are some of the more inexpensive ways to add a few HP to my 09 Fit Sport? I figure just 5 more HP would make a slight difference when passing another car.

Thanks!
 
Old Jan 15, 2014 | 10:28 AM
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biggest cheap differences will be running 93 octane and using colder spark plugs.

I got extra passing power doing these to my Fit. did it add horsepower? I think I added more torque rather then horsepower, and besides, horsepower isnt anything without torque

EDIT example of colder plugs is 01-05? Honda S2000 plugs, for the 2.0 liter model
 
Old Jan 15, 2014 | 04:53 PM
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Reduce weight, turn off ac, downshift. All free.
 
Old Jan 15, 2014 | 09:43 PM
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Good ideas! I was expecting more like CAI, exhaust, K&N filter, retune, etc.
 
Old Jan 15, 2014 | 11:26 PM
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Intakes and axel backs aren't really going to make a noticeable difference. Tires and lightweight rims are the biggest bang for your buck.
 
Old Jan 16, 2014 | 08:13 AM
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There's always this....
 
Old Jan 16, 2014 | 08:26 AM
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^^^^^^^^^ lol!!!!
 
Old Jan 16, 2014 | 08:52 AM
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I didn't think lightweight rims, reducing weight, etc increased HP.

Anyone know how to increase HP a little?
 
Old Jan 16, 2014 | 09:19 AM
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There isn't a cheap way to add hp.
Reducing weight will make the hp you have seem more usable. Without a tune the i/h/e setup pretty much gets you nothing but noise.
 
Old Jan 16, 2014 | 09:31 AM
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Originally Posted by hehn
There isn't a cheap way to add hp.
Reducing weight will make the hp you have seem more usable. Without a tune the i/h/e setup pretty much gets you nothing but noise.
Ok...thnaks!
 
Old Jan 16, 2014 | 09:41 AM
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Power-to-weight ratio is what affects how fast the car is. You can change that in two ways. One is to add power. The other is to reduce weight. It's not easy to add power in the Fit. The easier way to increase performance is then to reduce weight. Wheels, being both UNsprung (up and down with the suspension) and rotating mass, are the first and best place to look for reducing weight. It will make a bigger difference than the same weight reduction anywhere else on the car.
 

Last edited by PaleMelanesian; Jan 16, 2014 at 11:34 AM. Reason: d'oh typo
Old Jan 16, 2014 | 10:54 AM
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Tires, wheels, hubs, knuckles, control arms, sway bars, rear beam axle, shocks, springs, etc. are all defined as unsprung mass... outside of the nitpicking, I agree.
 
Old Jan 16, 2014 | 11:19 AM
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Enkei Wheels - Racing Series Wheels - RPF1 <- Nice lightweight wheels for ya!
 
Old Jan 16, 2014 | 12:05 PM
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Originally Posted by jmed999
What are some of the more inexpensive ways to add a few HP to my 09 Fit Sport? I figure just 5 more HP would make a slight difference when passing another car.

Thanks!


eat less, lose weight. very efficient and healthy... and slightly faster car... ...
 
Old Jan 16, 2014 | 01:56 PM
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Originally Posted by 13fit
biggest cheap differences will be running 93 octane and using colder spark plugs.

I got extra passing power doing these to my Fit. did it add horsepower? I think I added more torque rather then horsepower, and besides, horsepower isnt anything without torque

EDIT example of colder plugs is 01-05? Honda S2000 plugs, for the 2.0 liter model
The only thing adding 93 octane will do is waste your money. It may even be bad for the engine.
 
Old Jan 16, 2014 | 02:33 PM
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Originally Posted by david223
The only thing adding 93 octane will do is waste your money. It may even be bad for the engine.
There are whole threads on this, I think everything that can be said about it has already been said; and people have already chosen what boat they are on, so I won't bother trying to make any arguments on that subject.

But in practical terms, this is cheap enough for the OP to try. Run the premium fuel for a couple tanks, like 25 gallons worth, what's the cost? like $5? Then one can decide for themselves.

The claim that it may be bad for the engine is a bit out there; I don't think many people are with you on that boat.
If premium cost the same as regular, or was just like 1cent more, would you still use regular?

I would say also, you can also check the pressure of your tires and over inflate your tires by a few PSI. A little less drag from the tires does help feel less sluggish.
 

Last edited by raytseng; Jan 16, 2014 at 05:23 PM.
Old Jan 16, 2014 | 03:31 PM
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Originally Posted by david223
The only thing adding 93 octane will do is waste your money. It may even be bad for the engine.
Also, the earth is flat.
 
Old Jan 16, 2014 | 05:55 PM
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While I'm unable to point to the earth's curvature, I can point to many articles stating mpg won't improve using higher octane than recommended by the manufacturer.

Do you have anything besides sarcasm at this point?
 
Old Jan 16, 2014 | 06:44 PM
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The reason bolt ons don't offer any power is because the ecu eventually readjusts itself to keep the engine running economically and thus taking away the gains you experience. There is a thread on here about it.

In that case I would try lightweight pullies for the crank and alternator if there are any available. I know ralco makes a set for the GD.
 
Old Jan 16, 2014 | 09:37 PM
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Originally Posted by cab0053
Intakes and axel backs aren't really going to make a noticeable difference. Tires and lightweight rims are the biggest bang for your buck.
Op is asking for CHEAP ways. Which is not unreasonable, given we are driving a honda that is UNDER 20k even when fully loaded up with accessories.


the usual boltons DO make a difference. I have several dragrace timeslips to prove it.

Like I said above, by FAR the biggest differences in my times came with the colder heat range spark plugs, and running 93 octane.


The higher octane and the reasonably high resolution from the knock sensor combine to allow advanced ignition timing, and slightly larger injector pulses.


We are talking about maybe 3-4, maybe 5 PEAK horsepower, maybe same numbers PEAK in torque.

That does NOT take into account the extra power and torque UNDER the curve.


You guys also need to keep in mind short ram intakes shorten the powerband, and move it to higher rpms, while full bodied intakes usually just maintain or expan the powerband slightly, but make it mroe of a midrange grunt.

Different parts equal different results
 



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