Gain 5 Horsepower this Weekend, for practically nothing

All things Altima Coupe.
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anosoccer999
Posts: 59
Joined: Wed Jan 25, 2012 4:39 pm
Car: 2008 nissan altima coupe 2.5 cvt
Location: macon, georgia

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What if I told you that you can gain 5 horsepower this weekend, for less than $100? Or, what if I told you that you could gain 5 horsepower this weekend, for less than $20?

I bet you'd be interested eh?

Well, the good news is, I'm going to tell you how to gain 5 horsepower this weekend for $0-15 spent. Sound too good to be true? Well, read on!

1) Increase the H2O ratio in your coolant - if it weren't for corrosion and freezing concerns, automotive makers would use pure water. Water cools much better than coolant any day of the week, and a cooler engine is a better performer. Instead of half and half, try 40/60. DO NOT use pure water, As this may cause premature corrosion and that can be no fun at all to clean up. You may also try water wetter to further enhance this effect.

2) Index your spark plugs - this is an age old trick that is good for about 1 extra pony. The idea here is to "aim" the open end of the spark plug terminal (the gap) towards the intake side of the head. In order to accomplish this, simply mark on the plug a small line to indicate where this gap is, and install the plug as normal.

Try to line up the line with the intake side as best as you can. It may require buying 2 sets of spark plugs in order to do this, but hopefully you'll be able to do this the first time. Be careful with aluminum heads not to over tighten, as that could lead to a costly repair.

3) Relocate IAT Sensor - This is a very simple modification that will work on a great deal of fuel injected vehicles. The IAT sensor (,Intake Air Temperature 0/00) tells the computer how hot or cold the incoming air is. The computer will then adjust the amount of fuel being injected, as well as make minor adjustments to timing based on that reading.

The problem is that in many vehicles, the IAT sensor is located in the intake manifold, near the cylinder head. Therefore the air that the IAT sensor, reads 0/00 is much hotter than the air, say, in the intake arm. The idea with this mod, is to relocate the sensor to the intake arm. Use JB Weld or similar to patch up the old port for the sensor.

This will cause the computer to believe that incoming air is slightly cooler, causing it to inject more fuel and advance the timing a tad.

4) Synthetic Oil - This is guaranteed to pick up 1-2 horsepower, as multiple dynos over the years have proved this fact. Simply by switching to a true synthetic oil this weekend you can reduce the friction in your engine, improving efficiency, and therefore going faster.

5) Insulate Fuel Lines - When your fuel lines travel through the engine bay they heat up. However, cooler fuel produces more power for more reasons than just cooling down the intake charge--although that certainly helps things! So, to improve power output, simply purchase some refrigerator/air conditioning insulation and wrap the fuel lines with the insulation. While you're at it, you may wish to go ahead and do this to the intake arm as well for even more power.


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Ozzie
Posts: 3780
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Location: Australia

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160+ views, and no-one has a take on this?
Has anyone done these things and noticed an improvement?
Does anyone have a counter argument to any of these improvements?

I guess another one would be to make sure your tires are at the correct pressure....
If they are running low, this will increase rolling resistance.

Any others?

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SHIFT_COUPE
Posts: 3887
Joined: Fri Aug 03, 2007 3:36 am
Car: 2014 Infiniti Q50 AWD
Location: Bethel, CT
Contact:

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I wanted to respond but then I realized I would have nothing nice to say ;)

The post reads like a spammer but it was posted by a user with legitimate posts. What gives?

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Ranga14
Posts: 1864
Joined: Tue Sep 09, 2008 5:52 am
Car: Boosted 08 Altima Coupe 3.5
Contact:

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SHIFT_COUPE wrote:I wanted to respond but then I realized I would have nothing nice to say ;)

The post reads like a spammer but it was posted by a user with legitimate posts. What gives?
Well it's obviously copy n paste from some random article so that's why.

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DJ_B_Easy
Posts: 3593
Joined: Tue Jan 19, 2010 3:16 pm
Car: 2017 GMC Sierra All Terrain X
Location: NJ

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SHIFT_COUPE wrote:I wanted to respond but then I realized I would have nothing nice to say
Ditto. I can gain 5HP by removing the dead hookers from my trunk. Doesnt mean Im going to jump up and go through all the trouble.

mikethemike
Posts: 852
Joined: Thu Feb 24, 2011 11:40 pm
Car: 2010 Altima 2.5s w/ convenience package
Location: Burbank, Ca

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I hear if you pull out your motor mounts you'll free up 10 ponies. The engine is always just sitting there doing nothing, it needs space to move around. Do this you wont regret it, or your money back

mmkeller
Posts: 1964
Joined: Mon Sep 07, 2009 3:30 am
Car: 2017 Maxima SR
2009 Murano SL
Location: Texas

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I was going to post something in here.....uumm.........forgot........damn

wade001
Posts: 877
Joined: Thu Oct 15, 2009 12:34 pm
Car: '09 Nissan Altima Coupe S 2.5 M/T

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I was going to be nice and not post :/!

cwilson0688
Posts: 8
Joined: Tue Aug 31, 2010 9:56 am
Car: 2009 Nissan Altima Coupe
Location: Little Rock, AR

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From my experience in working at a radiator shop for the past 5 yrs, not a good idea at all. 50/50 blend is recommended not only from all radiator manufacturers, but the dealer as well.


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