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”) 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” 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.


Not sure that it works but ill find out

 

Good trick with the IAT sensor. A lot safer than those "20 HP Chips" on eBay and it makes sense

 

nice post. Very original ideas.

 

Thanx but i still wanna know why the accord wagon says 140 and the accord sedan says
130 is the wagon faster or what some one let me know cause my friend raced a wagon and it owned him by 6 cars and he has a nice setup up


ps. the wagon was a 5spd lmao

 

for 6 length win, H series or boost would be my guess

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nelsond &raquo;</TD></TR><TR><TD CLASS="quote">Thanx but i still wanna know why the accord wagon says 140 and the accord sedan says
130 is the wagon faster or what some one let me know cause my friend raced a wagon and it owned him by 6 cars and he has a nice setup up


ps. the wagon was a 5spd lmao </TD></TR></TABLE>


97 EX Wagon, H22 w/ITB's, my dream car.....

 

...accord sedans come with 145....

 

...well.. at least the 97 accord sedan did....

 

i saw all those on a site that was selling h22 install guides.

 

You read that off of that site, didn't you? hehe.

BUMP...because I have done ALL of these tricks and WILL vouch that they do work, however 5hp isnt too noticable to anyone but maybe me, but the fuel economy (I log it) was also improved, and thats a nice side effect of this too.

 

i might sound like a complete noob lol, but how would u relocate the IAT sensor.. dont u need to plug it in somewhere? or whats the deal. the instructions where not to clear.

by the way i have seen all those tricks before on a car site lol.

 

stock car, the intake is plastic. cut a new hole, and place it farther from the motor.

 

hmm im not to sure but i dont think the IAT sensor on a 5th gen. accord is on the plastic intake tube (im not a mechanic) anyways i replaced my stock intake with a aftermarket and dont remember any IAT sensor on there. ALso if im not to sure i thought it was behind the intake manafold somewhere or something..

if im wrong then anyone know where the IAT sensor is on a 5th gen accord?

 

On a 4th gen the IAT sensor is on the side of the intake mani opposite the throttle body. Its probably the same on a 5th gen.

 

ya thought so.. do u know if it is held by screws or anything? if im correct on the 5th its really hard to see , and hard to get your hand behind the intake mani. they got everythign so freaking cramed in the accords lol.

Also a pic of the 5th Gen IAT sensor location would be a plus

 

http://www.ultimateresourcegui....html

 

On the last modification, isn't it quite dangerous to just bypass the coolant from the throttle body? Wouldn't it be quite damaging to the throttle body if it didn't get coolant?

 

the only 5hp you'll gain is in your head.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by taKuto &raquo;</TD></TR><TR><TD CLASS="quote">On the last modification, isn't it quite dangerous to just bypass the coolant from the throttle body? Wouldn't it be quite damaging to the throttle body if it didn't get coolant?</TD></TR></TABLE>

no, it's not new, i made a post about coolant bypass like two years ago

i would not claim a 5hp gain, because i know it's not happening

now everyone's excited, lol sorry to burst the bubble but yeah..

 

I really can't see how bypassing coolant would even increase any power at all. Could anyone elaborate a bit on the subject?

 

slightly reduced intake air temperature.... or thats the idea.

but I question how useful this mod is anyways... I dont think you will see any real sustantial drop in temp. but what you probably will get is a hunting idle condition.

 

stop hot coolant from heating up the tb

 

yeah, I have this setup on my car in the summer, but in Atlanta it WILL get below zero, so just for good measure, I keep the coolant through it. All this to keep the TB from stopping. Well, eventually, driving for a while in the summer, itd get that hot without coolant. So they do it for consistency, just like the reason why theres a radiator and electric fan, so the motor ALWAYS runs at the same temp. Honda could save a SHITload of money by not doing this, i mean its more coolant, more hose, another part to design and manufacture, but given that they are the best build quality, most MPG, most low emission, and most reliable cars in the world, im gonna say that this is a good idea and that they probably thought about this more than us. For a whole market, its a good idea. For me personally looking over my car every day and running in the summer, I assume responsibility and will run my way in the summer with 70%water coolant ratio.