Question about headers?

Hey guys, (and girls) :)

I bought these headers today on Ebay for my brother for Christmas.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2447310422&category=33631&rd=1

He drives a 2000 Civic EX. I was hoping you could provide some insight as to how much of a gain he might be able to get from these. I know the ad says up to 15hp, but I also know that the guy will tell me what he needs to in order to get the sale.

Please only provide honest opinions. I am no stranger to modifying cars, but all my work has been with domestics, so I am not familiar with how his civic will respond.

Please, no "ricer" answers of like 30-50hp. I know damn well he won't get that much. I know that many of you import drivers are not "ricers" and that is why I feel comfortable asking for information on here. I was thinking it would be like 8-10 horses, but I didn't know for sure. Also, would he lose any low end torque due to issues with decreased back-pressure?

He has the SOHC engine and it is completely stock as far as performance goes. I think he plans to put a full exhaust and an intake on at some point soon, but he'll have to do that on his own, because I can't afford that much shit... :)

Any comments on the headers would be great...

Thanks all...

-Garrett

An inline 4 cylinder has one(single) cylinder head, meaning has only a header.


With a header alone you'll be lucky to gain 1-5HP. For a header to work properly you need an Intake & exhaust at least. A slight built of low-end torque will be lost, but Honda engine are not made to make low-end power.

Actual dyno tests :
http://www.importreview.com/performance.html

Thanks for the info bud, and yes, sorry, I mean header singular. So used to working on v8's that I just add the "s" on the end without thinkin bout it.

yah your brother will see minimal gains from bolt-ons.

Interesting. Ive seen these on ebay plenty of times but can someone vouch for its DC style design. Me personally, i have and still will spend $235 on the real DCs, cause i strongly believe in "you pay for what you get," but i would like to hear some feedback about these DC replicas.