What Header for Performance
 

Hey,
I am sort of new to the mod scheme of the BRZ, and I am looking to replace my stock header. So far I have done exhaust and that really it for mods. ANy suggestions on what header to get.
What I am looking for in header:
- maximum performance/ HP gain/torque increase
- sound increase doesn't matter because My current exhaust sounds good enough
- reasonable pricing because I am not loaded
Thanks for your help

Do you prefer EL or UEL?

What's your current exhaust set up?

whats the difference between uel or El and I have Invidia N1 catback

Well for my tastes the N1 is too loud with a header but that's all personal tastes and local laws.

EL is equal length runners on the header

UEL is unequal length runners on the header.

Here is a good place to start.

Header & Overpipe compilation thread
http://www.ft86club.com/forums/showthread.php?t=81491

And another thread for you to read

Basic Bolt on mods intake, exhaust tuning guide
http://www.ft86club.com/forums/showthread.php?t=81493

ok thank you, UEl or El doesn't matter to me, Just looking for a list of headers that Give significant horse power boost

The consensus lately is to get the ACE Header. They seem to provide the most hp/tq for the header. However, to maximize these header along with any other header you would need a tune. Appears that the only tune at this time that will maximize the gains of the ACE header is the Ecutek tune.

here is the link to the thread w/ dyno results:

http://www.ft86club.com/forums/showthread.php?t=88696

as per above thread "basic Bolt on mods guide"

Their is not rearly much difference in catless EL/UEL just pick your sound you like UEL gives the boxer rumble.

For the street UEL usually give a bit more midrange so its usually better where your using the engine most

For arround $700 you can get a good EL/UEL header Tomei Gruppe-S Openflash OFH or similar you will get about 20hp gain with tune

Or if you want the best performance probably the ACE header but its arround the $1400 mark maybe 5hp over the others

Whatever header you get your going to need a tune, else most of the gain will not be available and you will throw CEL code P0420


you need to look at a header and tune package.

If your not loaded then just get a reasonbly priced header like tomei , gruppe-s or openflash header.

for cheap tune your looking at an Ecutek Flash and Go tune (canned ) tune these are about $600 (Ecutek licience plus tune) IF you have a local ecutek dealer to flash the tune. If you dont your up for another $400 for a cable to flash.

Other option is the Openflash Tablet, device to flash tunes that comes with a selection of tunes for EL/UEL 91/93 fuels and E85 fuel. Its $500 and you flash your own tunes whenever you like.

They do a Tablet/tune and header package for about $1100 if you want uel header
http://openflashtablet.com/Automotiv...OFH/index.html

unless you have a quiet catback any catless header is going to be quite loud, if you fit a header be prepared to put your stock catback back on if its too loud, the stock catback is not restrictive, it just does not sound the best but it is quiet.

you can then sell your aftermarket catback to recover some money

I ran a N1 and a PPE equal length merge collector, the car went over 200hp on the dyno and 13.47 in the 1/4 mi.
Videos are on this site in the 1/4 mile time thread or go to youtube type
13 47 frs if you want to hear it also 13 52 frs

with that setup was their a noticeable difference in power when driving

I was on E85 still am and yes very noticeable. The car ran 15s factory, mods to the 13.5 that's a lot. You have to get a tune with a header have to or it runs like poop.
Go drive a new SI civic and that will give you a idea

Those two are mutually exclusive.

If you want the best bang for your buck, gut the cat out of your stock header. If you want the best performance, you want an Ace 4-2-1 header.

Don't forget to budget for a tune, or you'll only really get a change in sound with a minimal change in power. You need the tune to prevent a CEL, and maximize the gains.

Is this all the mods you have? I have trouble getting under 14.5 @ 96. My best being 14.3 @ 97. I have borla UEL, catless fp, e85, ecutek by HRI tuning.

13.5 is damn impressive. Are you on slicks? Very cold weather? I'm in Florida so it is warm even now.

Edit: I see you have gears and slicks. That's probably making the difference. Agree? Since I can only do a 2.2x maybe 2.15.

I'd be curious to see what you could have done with an Ace header, as it already hits the 200whp mark (rounded up from 199.6) on CA 91. :respekt:

A civic Si is alot slower than you. They are maybe slightly faster than a stock 86 see here:

http://www.roadandtrack.com/new-cars...-65-6-roa0214/

Might "feel" faster due to the torquey engine.

I was just going after the 205 hp they have, never thought about the torque my bad, good point

Ya I would definitely like to know. I still have that motor on a stand I could swap it back in there if I should happen to get some one to lone me a header, then have Bill retune it. :thumbsup: Im running 13.47 and the record is 13.32 be nice to take that back again.

N/A I run a 225 17 hoosier on the stock wheel hit 13.52 Then I switched to a 26x10 slick 13.47 with 4.56 gear. I have gone 13.60s with factory gears. For N/A best times you need a cool night like in the low 70s or more and low humidity. Humidity really hurts this car's performance N/A I have lost 3/10ths because of 90% humidity. I launch at 7800rpm and run a 1.76 60ft

Gruppe-S UEL headers are really good at a great price. They are comparable to the Tomei UEL. You should check them out. The quality is great. I have the coated ones.

Attachment 127871

I have the Gruppe-S UEL headers and the rest of the stock exhaust with a Stg 2 e85 UEL tune from OFT and it was a very noticeable difference from stock.


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Thanks for the info. I understand the et now but your top end though 101 is crazy you must have a factory freak! I find it hard to believe that's just the header which I understand a borla is not the best. My tune is from one of the best in the country so that should be comparable.

I'm so new to this I have no idea what you guys are talking about but sounds pretty sick lol

I think it comes down to where you are going to get your tune from, off the shelf tune use OFT with openflash header. If you are getting your car custom tuned I would go for a ace 4-2-1 running e85.


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I have a stg2 E85 tune from Delicious Tuning and their Flex fuel kit a PPE header and over pipe catless front pipe invidia N1 4.56 gears from weir performance hoosier drag radials 6 puck ACT clutch DSS 600hp axles Airaid cold air intake That is a list of every single mod on the car. And I have hit 104 in the 1/4 max speed. I spun on the launch from shitty track prep. Usually its around 101.82 mph Trust me at the time PPE was the best now I'm hearing great things about ace 4-2-1. You can only tune to what the car can do so if your header doesn't flow you will never see top end performance.

Its a night and day difference.

Ace header comes with an over pipe...so factor that into the price tag.

This is a nice comparison between headers. Same day, same dyno, same tuner, but different cars. Has some of the top headers (Ace, JDL, PTuning). The low/midrange gains on the Ace are impressive.

http://www.ft86club.com/forums/showthread.php?t=95271

Right the header is key. Then the drag radials to get the launch.

In my opinion (and research) these should make no real difference to power output:

over pipe
nvidia N1
6 puck ACT clutch
DSS 600hp axles
Airaid cold air intake

Not sure how much timing your able to run but I'm able to run 29 degrees @ redline and afr is ~12.0-12.5 on e85. Which of course is essentially MBT.

Header and "custom" tune for about $1K. That about $50/hp NA hps. Not sure how you can beat the cost/benefit with any other setup.

http://www.ft86club.com/forums/showthread.php?t=98151