Should i've get more power? I'm living in country where's no emissions. so what will happen?

 

It will get louder and thats about it unless you have a turbo motor or at least a motor with a couple bolt ons. Oh and if it's obd2 you will throw a check engine light.

 

you may see a small power gain...like mentioned above, if OBDII you will trip a CEL and your car will be louder...and you will pollute the enviroment alot more...not really worth it IMO

 

well what about header, catback and cai?

 

intake header and cat will make a decent power gain. More than just punching out your cat. Be careful if you do punch out the cat as it is illegal and if you get caught there is a very large fine involved. I will admit ive done it but couldn't tell a huge gain and it was much louder. Get a high flow cat with your intake header and exhaust and you will be happy and not pollute.

 

thanks! one more: should i get more gas milage? or less?

 

i dont think so. just leave it alone. dont fix it or in this case dont remove it if it isn't broke.

 

Gutting your cat will do nothing!!!!! Contrary to what people say, having a high flow cat is the best thing to do. When you gut your cat it actually creates an exhaust "stagnation" where the exhaust kinda slows down in the empty 'now oversized' piping, thus it doesn't flow as it should throughout the system. YOU WILL GAIN "0" POWER!!!. BUT, if you dont have the money to get a high flow cat gutting the cat will be beneficial and your car will have a louder more "throaty" sounding exhaust. Also by having no cat your car will smell really, and i mean really bad after like 20 min of driving.

 

Trust me! I drive a 92' hatch b16 type R with an apex'i GT exhaust gutted cat. And my car always smells like gas cause the no cat. I'm tired of smelling like gas everytime I drive!!

 

sorry for off topic, but which is the best exhaust header?

 

The DC sport 4-1 stainless steel header is great for the money!

 

off top again, but can someone tell the difference between honda OEM exhaust manifold
and DC header for example?

 

The honda oem exhaust manifold is kinda heavy actually for what it is. It rusts mad easy. It has a lack of low rpm torque and a lack of high rpm power. (im talkin b16) By putting a good 4-1 Header ( like the dc sport ) you'll notice at initial acceleration you dont have to rev as high for the car to move fast enough from a stop light due to increased torque and at high rpm you'll feel an increase of power around 7500rpm to 8200rpm. With a stock exhaust manifold ( assuming you have intake and exhaust ) you'll be shifting around 7500rpm cause your engine isn't really makin any power. With a good 4-1 header you'll be shifting around 8200rpm cause you can feel the engine makin power past 7500rpm. I know this cause I had a 4-1 header that got smashed up and now I have a stock exhaust manifold and I NOTICE THE DIFFERENCE!

 

the dc header makes you gain like 50whp. while you dont gain anything with the stock exhaust.

save your time and money and keep it stock or swap it, assuming its a d series.

 

a dc header gains that much power? if so, you should try a hytech style one.

 

..It makes 50 whp?!? What? you mean like 3 to 5 whp?

 

/sarcasm

 

i don't it will make 50whp not even 50 hp! well, maybe around 5 hp.
you did not understood my question, i mean i what to know what custom header does against oem one? i mean flow is a flow and it is same in DC 4-1 header and Honda 4-1, can some one tell what is the thing? what the technical difference between them? DC tubes are larger diameter? thats all?

 

not if you have a stock sohc lol .

 

I have bone stock D16Y8. just removing the air filter has given me a little amount of torque on high rmp's. i now going to install AEM V2 CAI, see what will happen!

 

i wouldnt pay for an aem cai. save that money and put together a bseries swap or a turbo kit.

 

aem cai = $200, B18C5 type-r = $4000, B16A = $2000. Is there difference?

 

thats stupid. who the hell pays 2000$ for a b16a. yes there is a different. the b series swaps are better! the cai wont do ****, if your looking for speed, your going the wrong way. do a turbo set up. 200$ is a waste of money to be spending on a d series cai.

 

well, i prefer b16a2 swap than turbo setup, cause i don't need much speed. who much b16 swap costs?

 

Check out hmotorsonline.com---Their one of many sites out their but ive bought from them so I know their legit. You could just get a obd0 b16a1 for about a 1000$ then as far as transmission prob get a Y21 depending on what model honda you got...what honda you got? you can also get a "complete change over"....what honda you got?