Rep Power: 227

Hi, so far I have done the Magnaflow catback, and K&N Short ram intake, as well as modded the cpu a bit for a more performance fuel to air ratio rather than gass saving. Now between the Short ram and the magnaflow catback is the stock headers which is 2-1. Is that bottlenecking performance from the free flow system I am trying to put together? Would a 4-1 make a dif ?


Other than the above mentioned all I have done is denso iridium pluggs/wires and then cosmetic stuff but am trying to get as many inexpensive horses out of the car as I can. Ty for replys.

 
Rep Power: 247

well good luck.
when u say "modded the cpu a bit for a more performance fuel to air ratio rather than gass saving" what exactly do u mean?
i hope its not those ebay resistors!

id say go kamikaze header and custom piping

 
Rep Power: 227

alrighty so you do think the headers would be worth it? also on the resistor thing lol ya it is but I didnt actually get it for the performance, I got it because my car would get kind of a shake or stutter from stop to go and the factory said it checked out. Someone recomended me try that chip thing and it actually helped a lot unless it just went away at the same time I got it. Have you heard bad things about them?

Ty.

 
Rep Power: 247

well thats really up to u. ur not gona see any nice gains with any header. but id say kamikaze are good.

those things are just resistors that block air flow reading so it acts like there is more air being "swallowed" and therefor ads fuel to get the right afr. our cars already run rich, more fuel isnt necessary.
id say ur ecu needs to relearn idle or its ur ecu messing up. possibly may need a valve adjustment too. just a thought

 
Rep Power: 311

Our stock header is a 4-1 header man. How can our stock header be 2-1? it can't be.

also i got a HP 4-1 racing shorty header for sale if you're interested. here's a pic.




stock 4-1 header below...

 
Rep Power: 352

dood, you drive an eco box. there is really no bolt on that will giv you any power w/o great tuning with something like a Kpro....


so no, its not worth it....unless ur plannign to build a fully built NA civic...but that'll still be a waste of money sice u wont get as far as you should with the amount of money u spend.

 
Rep Power: 227

TY for the replys guys I am a bit of a noob at all this. And yes I would be interested in those headers D5. How much you asking? and what would shipping be to central texas be around?

 
Rep Power: 811

the header is not a restriction. the stock header ports are the same size as the engine head ports, which is all that matters. if you want looks, get DC header since its the same size port as stock. and jet coat it so it keeps heat in better.

 
Rep Power: 0

If you decide on a new header, check this one out. (Link below). For forum members only, if you buy from this link and leave me positive feedback I will refund your shipping charges in full.
I have a Thunder header (and exhaust) on my own car. All stainless, nice thick
chrome flange and welds/construction are guaranteed for life.

http://cgi.ebay.com/ebaymotors/01-03...8209QQtcZphoto

Yeah, it's an eBay link, but I just put stuff up there for fun on the side. I'm not a crappy no-customer-service Turbonator Powa Sella...

 
Rep Power: 251

2-1 hahahahahahahaha....sorry i had to do it. its your car man do what mods you want to it. but the resistor thing off of ebay is garbage...i hope you didnt think you were gaining 20+ horses like they claim. i personally never got a header for my car because i find it uneccessary on this engine.

 
Rep Power: 259

good God that thunder header is ugly..

u dont have a 2-1 header.. i dont even knw what that is.. dirtbikes? its not restricitng anyway..why dont u boost?? lol

 
Rep Power: 311

Dont feel bad about being a n00b...we were all there at one point. haha

As far as the header is concerned, it really isnt worth the money unless you were to buy a used one for a good price off another member on here. I used to have the HP "race" header which was WAY more hassle than it was worth. You honestly wont even feel any gains with the header.

 
Rep Power: 412

1) It is ONE header, not headers. Unless you have a V style engine, it is one header

2) Don't bother with a new header. It won't add any power unless you are building a NA engine (porting, head work, cam, etc). It isn't worth the money. Save up for suspension or turbo.

3) You do not have spark plug wires because we have direct ignition.

I don't want to sound mean. I am just educating.

 
Rep Power: 229

so wait.
getting new headers won't help that much on hp is that what your sayin?

 
Rep Power: 249

bolt ons don't help the d17. i put a cold air intake on my d17 when i had it for better gas mileage, and that was it.

 
Rep Power: 311

the gains are so minimum there is no way you will ever be able to tell, unless, as stated before, you have head work done. And even then you probably wouldnt feel the difference by putting a header on.


Turbo or nothing.

 
Rep Power: 299

I agree turbo or nothing lol

 
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HEADER without a S!!! We have ONE header!!!

Yes, a new header won't do anything.

 
Rep Power: 299

He can go ahead and buy 2 headers and learn a lesson the hard way... Paying for 2 of them to realize that we only have 1 head haha.

 
Rep Power: 811

i only bought one headers for mine

 
Rep Power: 229

beadebaserr
^^^i dont understand why everyone says bolt ons dont help the d17... they do.. they prolly work just as good as they would on any other car.... just take me for example... i got a d17a1 with i/h/e and when i didnt have the exhaust i got eaten by tc's... my car was a joke... but now i keep up with them.. i eat autos and keep up with manual.. what do you expect when you put exhaust on your car? its not like your gna gain 100 hp...

 
Rep Power: 811

few hp doesnt mean helping the car to most of us, when you look at the rsx and other cars where just an intake gives 15-20hp. on the srt4, intake gives 20whp and 30wtq. thats helping.

 
Rep Power: 229

yea but not to the wheels... those numbers are too high.. especially for the rsx... theres no way 20whp from an intake... i mean just look at the gains that these sites have.. im not even sure if thats to the wheels.. 15 to 20 is rediculous...

http://www.gripmotorsports.com/pi~pn...+RSX-1629.html

http://www.knfilters.com/air_intake/acura_rsx.aspx

http://www.clubrsx.com/merchant.mvc?...ory_Code=ICATS

 
Rep Power: 229

and even less for the srt4!!! hahaha dodge sucks... i still think our cars respond good to basic boltons... just like any other car...

http://www.turbomagazine.com/tech/04...ons/index.html

http://modernperformance.com/dcx/srt_aem_intake.shtml

 
Rep Power: 249

consider the fact that you may have gotten better at driving man. the thing is, you'll spend 1000 dollars on bolt-ons for a d17 that might give you 5whp tops. not worth it in my book. when i had a d17, i knew it was slow, but that doesn't mean a car can't be fun. i spent money on suspension mods and loved my car still.

 
Rep Power: 249

oh, and never go by claims about HP and TQ on a mailorder website.

 
Rep Power: 811

what about the intake manufacturer dynos? there is a vid too showing the graph being plotted.

WR flow testing. their SW1 filter flows air faster than an open pipe without filter.

http://weapon-r.com/english/index.ph...d=31&chapter=0

and the dyno

http://www.weapon-r.com/english/imag...07-144-101.AVI

 
Rep Power: 249

d17s are slow without boost. that's all i'm saying. haha.

 
Rep Power: 272

yeah on type s its dyno proven that aemv2 yields 17 whp. and whoever said d17 is a rich motor is wrong. its a lean burning motor.

back to topic. yeah what everyone says its true it wont help that much but i will help a little. dont let everyone else dictate you on what you wanna do to your car. do what you want and have fun! but if you really wanna realistically have more fun and actually be decent quick you should get some nitrous or boost it.


oh and d17kid. lol stop trying to act like you know whats goin on cuz it seems like you dont! a stang gt with only bolt ons (intake exhaust headers) and a slight tune can see numbers of 350+whp. 350 whp is alot more whp than your above average turbo'd d17. bolt onts in the d17 will get us 20whp at its very maximum potential (which is highly doubtful for that matter)

 
Rep Power: 811

well its rich actually lol. dont make me dig up old dyno charts when i had mine tuned. the HX is a lean burn motor. ours runs rich in the curves because honda programs the ecu on the safe side. better rich than lean. when i had every bolton imaginable, i had a near perfect a:f ratio, before, it was quite rich in stock form. well above 14.7:1

okay here we go, way back when i had i/h/e cam gear, pnp head, ported tb, and vafcii. the blue a:f ratio is the first run on the stock ecu map, yet with all the tons of air mods i had, still running 13:1 which is pig rich for NA setup! they were able to use the vafc to subtract fuel (yes take away fuel with all those mods) to get a ratio of 14:1 which made the car run noticably better in itself.