I just got an 03 a month ago and i was wondering if there are any free mods that i can do by myself to get some hp

 

I have one but not have done any of these, because my engine is not broken in. You could probably remove the resonator and run some piping to the front of the car with some sort of screen attached. Also, if you know people with access to computers and other equipment necessary to advance the timing, you could also pick up some decent hp, but it will also mean using premium fuel. Another thing that is not that free but is pretty cheap, is to pull the platinum spark plugs and use copper. If you have the tools all you need are the plugs.

 

hmm, the resonator sounds good, but im new to modding and dont know where it is

 

Premium fuel = 10HP to J30A2

They have cold air intakes available already.

 

what cold air? The only one i have seen says coupe only. I am not really sure that I buy that whole 10 hp but it might be true. I will see once I have broken mine in. I think the resonator is under the air filter. Also i recommend changing the plugs to some ngk or denso copper plugs. They have to be changed more often but provide a better spark.

 

thanks for the info

 

A Honda engineer said it, I would tend to believe it.

 

Yeah, I believe it know that I did a little research. The reason is that it has knock sensors, so the timing will probably be advanced, giving better power.

 

If you're worried about a break in period, Honda redlines EVERY car that comes off the Marysville line in every gear and reverse, even before the paint has completely cured! They dyno every car to make sure the adverised power is there, plus they are adamantly anal about the quality. If there is even a slight problem with anything, they tear the car appart and fix it. So the break in on their cars has already occured at the plant. Honda says these engines are so well built and have such tight tollerances that the break in is almost instant. Now, I'm not telling you to drive at redline all day, but you probably could without doing damage or affecting the life and reliability of the engine.

 

I removed the resonator on my wife's 03 V6, it sounds pretty nice. Not sure about any type of power gain, but it does sound nice. About the spark plugs, I would leave them as is..........the engine is about as tuned as it's gonna get, and many honda mechanics have told me that changing spark plugs is just askin for trouble, plus there isn't much power to be had there in the 7th gen, but I have seen dynos where sparks have helped out the 6th gen V6 quite a bit.