Jameson

Ok, so I have a GSR motor in my EF, and I am trying to decide which company header to buy, i hear so many mixed reviews on so many companies.

I have been told everything from megan racing to DC sports to Hytech headers and others.

What company would you suggest? why?

zeeman

iTrader: (1)

it all depends on how deep your pockets are and what your final power goals are.
I like RMF.

or


And really like AN-R

for obvious reasons.
The dyno results are as equally impressive as the craftsmanship.

DC is crap IMO.
The Vibrant J-spec is a decent header for the price.
I'm tempted to buy a Rage header to try for myself. You can get the small tube for like $850, which is a lot, but not compared to the price of the DTR, RMF, Hytech, SMSP, and AN-R.
Some of the custom ones may not be compatible with a/c or power steering, but you're definately going to see the best results with the more expensive brands.

1sykcoupe

im strongly leaning towards the megan stainless steel headers for myself. great price at 300$

Mugen Power

there are a few, but it all depends on your goals.....oops, Z already said that. for a mild set up, i'd go Megan 4-1 w/2.5" collector (with skidplate). from there i'd go Vibrant 4-2-1 j-spec. the next level is, i guess, is the Rage small tube, Profab/Jerry Built/SMSP shelf header & Toda 4-2-1 (big paper). if you need the best of the best...RMF, Hytech, SSR (street sweeper) & SMSP are the cream of the crop. each unit will set you back $1000-1300US. but, you never have to buy a header again if you bought any of those 4. and, they'll probably make 10whp and 7wtq more, throughout the band, than any of the mentioned off shelf headers.

dingus888

well most of the headers that zeeman suggested are way to much for your setup they are designed for 2.0l + setups


edlebrok (sp) with 2.5 collector welded on (apparetnly has nice sized primaries)

rage or profab (about 7-800)

man stay away fromt his megan dc garbage...

get a rage or pro fab is my chioce for you

zeeman

iTrader: (1)

not true.

I know a few people with the RMF headers on mildly built gsr/itrs/lsvtecs with amazing results.
Now, you're right in saying that those headers are too much for his setup, b/c they aren't designed for a stock gsr. But if he has any plans on chaning cams/doing headwork, then i'd grab a good header now, and enjoy not being held back by a cheaper header once you do build up the engine a bit.
If he doesn't have any plans on building the engine, a $1200US header would definately be a bad idea.
I'd say a Rage or Profab would be a good choice as well, even if you decide to do some internals, they'll still provide good power.
But if you only ever plan on doing bolt-ons, just grab a vibrant, mugen or megan like m_power said.

Jameson

hey guys,

I neglected to mention that my engine is fully built! I mean everything up to ITB's, so i am looking for a high-end header.



So anyways, an expensive header is what i have in mind.

zeeman

iTrader: (1)

nice engine.
I'd definately go with something custom built (DTR, RMF, AN-R or any other company mentioned in this thread).
What are you doing in terms of engine management?

Mugen Power

that's the first motor with ITB's that i've seen without proper crankcase and valvecover ventilation. hmmmm...i hope that motor has some sick compression, headwork and cams to feed those ITB's. here's a word of advice, if you bought it that way, do a leak down bofore install. if its just built, break it in properly, dawg. anyway, you need to more specific about your set up before we can help out.

Dingus888- i currently run that jg/edelbrock with collector mod. it makes very good power. it can hang with some of the best headers up to 8700rpm. anything beyond that (9-10K) and the other custom headers will absolutely crush it.

Jameson

yes, the motor does have very high compression, with custom pistons, shaved head head that is properly balanced, Skunk2 racing cams, all the rod ends were done, cam gears adjusted properly, and i did do a leak down.

The engine management is a 1.5 bar SRS.

zeeman

iTrader: (1)

what is a 1.5 bar SRS?

Jameson

Its a stand alone fuel management system.

zeeman

iTrader: (1)

hmm....i've heard of SDS (simple digital system), but not SRS.

Jameson

sorry man, i made a typo of SRS, instead of SDS. it is a simple digital system.

My bad...

zeeman

iTrader: (1)

oh....i was sort of figuring that u meant SDS.
Does the unit you have control ignition timing? If not, you might wanna get something that does. I know crome has ITB tools and i believe hondata does too.

imported_plzbeleiveit

I was thinking of setting up a 2 step for launch. is that a msd ingition feauture?

zeeman

iTrader: (1)

crome has a 2 step.

Jameson

The new GReddy E-manage Ultimate has ITB settings too. but it is a pain to program the e-manage from what i hear.

zeeman

iTrader: (1)

and in order to have ignition control on the emanage you have to buy another harness and pay even more for the emanage.
IMO emanage isn't very good.....not to mention its pretty pricey.

Mugen Power

in that case, i recommend a custom SMS, SSR (SW) or RMF. i'd say Rage, but, i'm not fully sold on it yet. its quality is excellent, but, seeing that it has a clearance issue rubbing the block, i know for a fact that its not a 100% coopy of the Hytech unit. but, you can't go wong with the price. maybe Rage v.1, but, its only $600US. its being sold up here for $850 which is too much. at that price i'd purchase a mild steel RMF. g/l with the project.

Edit- i just noticed you have an EF. your choice is limited to probably the RMF narrow. any other quality header would require you to replace the front cm with traction bars.