Honda Car Forum

will my civic loose power if a put dual exhaust or will the hp stay the same?

INCREASE ITGOD BLESS

it should go up if you do it right. it should NOT go down

Dual exhaust will improve the flow of air through your engine, and should actually increase your HP by a slight %.

you will get a increase of hp but not much and it is only if the job was done right

you should gain power and horsepower and also get better gas mileage as your engine is breathing better.

well it's not as simple as bigger pipes equals more power through better breathing. first of all you CAN benefit from bigger exhaust pipes but not too big (more on this in a sec). second, your civic does not need dual exhaust since it's only a small 4 cylinder. dual exhaust would be overkill and will actually hurt you in the horsepower department as well as the fuel economy dept. the reason you don't want to go humongous on your exhaust pipes is because of a little process call SCAVENGING. there are four portions in the combustion process. theres the intake part where the cylinder goes down as well as the intake valve opening up, the intake valve closes as the cylinder works its way up on the compression part, then a spark ignites the compressed air/fuel mixture shooting the cylinder back down. on its way back up the exhaust valve will open to get rid of the exhaust gasses. when these gasses are exiting there is momentum created that is taken advantage of at the precise and split moment that the exhaust valve is closing and the intake valve is opening (both valves are actually both open). this is called SCAVENGING. the people who designed these engines used the velocity of the exiting exhaust to create a vacuum that helps suck in the fresh intake air giving you optimum power and efficiency.if you create a larger volume of space, ie. dual exhaust pipes for the exhaust to dump into the exhaust will not exit the cylinder with the velocity necesary for scavenging to take effect and you will lose horsepower and fuel efficiency.i hope this helped and check out the link on the source section































www.team-integra.net

u'll loose.the your 4 banger isnt designed for dual exhaust. ur exhuast wi'll flow to freely. no turbo cars need sum form of back pressure. i suggest u get a nice cat back...... maybe a Apexi N1 exhuast sytem , or the Greddy SP2 system............

The amount of HP increase won't be noticeable, any increase in fuel economy will be negligible, and unless you want to spend big bucks to have a loud car, forget about it. Your engine was designed by AUTOMOTIVE ENGINEERS to deliver the best balance of power, economy, and longevity at an affordable price. Horsepower costs money, and the price increases expotentially compared to the increase in power.

normally it would give you more power but with 4cyl if you just upgrade the exhaust it will give the same performance so dual exhaust is not really nessesary.