Are headers really worth it?

[PNW-BRZ]

I was running Stage 1 with an OFT Tune. Switched over to a Gruppe S UEL header and ECU Tech Tune (on Dyno) and it was a HUGE difference (currently 190 HP at the wheels on 92 Octane) and the Torque dip is drastically reduced. The rest of the exhaust remained stock. It's really pretty quiet (unless I'm just starting up or I jump on it) Wished I would have done it sooner it's really night and day difference.

[allowe]

Anyone know the differences between ofh and ofh2? I just got the ofh header.


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[Fred1]

Originally Posted by dobbrz

can't you use chevron 94?

Sadly they are no such Chevron close by. Anyway I thinks their not much WHP difference between oft stage 2 91 and 93.

[timmydatooth]

getting my tomei UEL header installed tuesday! super excited! question do I have to do a tune right after I install them? or am I safe to drive around on the stage 1 tune for a little while?

[allowe]

Does anyone know what to tune to make cold start less loud ?


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[invaliduser]

Search Software forum.

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[Turdinator]

Originally Posted by allowe

This question has probably been asked many times but I'd like your opinion on it.

I have an mxp exhaust, injen intake and an oft stage 1 91 oct tune (we don't have 93 where I live). I'm about to buy an OFH off someone but I'm scared about the loudness.

What I'm mostly concerned about is, does it really make a difference in the torque dip?/ does it make a noticeable difference with the stage 2 uel tune combined? I've heard that the difference is so small you won't even notice anything. Is this true? I'd love to hear your opinions.

Also, would an EL hks be just as loud?

All non-stock, catless headers will increase how loud the car is. With a stock exhaust it is still quiet at idle and cruise but noticeably louder when accelerating or on cold start. I don't know where your catback sits on the loudness scale but the Invidia Q300, Perrin 2.5" resonated and the new CSG MXP catback are supposedly not too loud with a header installed.

Originally Posted by allowe

Anyone know the differences between ofh and ofh2? I just got the ofh header.

There is a whole thread on it. Nothing significant changed I believe.

Originally Posted by timmydatooth

getting my tomei UEL header installed tuesday! super excited! question do I have to do a tune right after I install them? or am I safe to drive around on the stage 1 tune for a little while?

You won't damage anything by not running the stage 2 UEL tune but the car will be MUCH nicer to drive with the stage 2 tune.

Originally Posted by allowe

Does anyone know what to tune to make cold start less loud ?

I don't believe there is an OTS tune. You will most likely have to read the thread and modify your existing tune.

[guybo]

Originally Posted by timmydatooth

getting my tomei UEL header installed tuesday! super excited! question do I have to do a tune right after I install them? or am I safe to drive around on the stage 1 tune for a little while?

If it's catted you're good to go (cat in header that is- the secondary cat does not trip any CEL if removed). If it's catless however, Stage 1 tunes do not disable the P0420 CEL and your car will trip the CEL and go into low power mode and disable the cruise control regularly.

Stage 2 tune does disable the P0420

[allowe]

I know this is a bit off topic but while I'm trying to install my header I saw this

There are no signs of dripping on the skid plate..


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[Chronology]

Originally Posted by allowe

This question has probably been asked many times but I'd like your opinion on it.

I have an mxp exhaust, injen intake and an oft stage 1 91 oct tune (we don't have 93 where I live). I'm about to buy an OFH off someone but I'm scared about the loudness.

What I'm mostly concerned about is, does it really make a difference in the torque dip?/ does it make a noticeable difference with the stage 2 uel tune combined? I've heard that the difference is so small you won't even notice anything. Is this true? I'd love to hear your opinions.

Also, would an EL hks be just as loud?


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Upgraded headers with a tune is better money spent then the intake you put in. UEL will give you that "subi" sound, EL will give you a bit more peak HP.

Most NA guys will go I(filter replacement)/H/E + tune, slap some E85 and your around 50+ hp. without stickers!

[allowe]

Do I need new bolts for op to header? Those bolts don't have an end part to them


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[Chronology]

Originally Posted by allowe

Do I need new bolts for op to header? Those bolts don't have an end part to them


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I had to drill out the bolts between the over pipe and mid pipe, then realized I was going to replace all of it.

I would grab some extra bolts, I needed 4 I think.

[Detroiter]

Originally Posted by allowe

I haven't heard crickets since I started filling at shell

And they have the auto full thing so I don't have to hold the pump

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Wait are you telling me that every gas station in canada doesn't have those? I have never once pumped gas here in Detroit without using one.

[allowe]

Originally Posted by Chronology

I had to drill out the bolts between the over pipe and mid pipe, then realized I was going to replace all of it.



I would grab some extra bolts, I needed 4 I think.

Crap I don't want to replace the op :/. Where did you buy your bolts and what size were they if u don't mind me asking


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