Nameless Performance Equal Length Stepped Header

[wparsons]

Originally Posted by w00t692

If the dip was shifted it would be of similar rpm range. Header's do not really shift power. That's usually something an intake manifold would do as you tune the resonance and harmonic benefits of it.

Are you claiming that header design doesn't use resonance or harmonics at all?

[raven1231]

Originally Posted by Captain Insano

So you dont think headers can shifter the peaks or valleys of power in the rpm range? Interesting theory.

Regardless, it makes significantly less power at the dip he is referring to and significantly more where the larger original torque dip was. Is that slight dip worth the gain elsewhere? Depends on who you ask.

[w00t692]

Originally Posted by wparsons

Are you claiming that header design doesn't use resonance or harmonics at all?

No, merely that the harmonics associated are COMPLETELY different than the ones in an intake manifold that shift power around.

You can design a header to make power anywhere and lose power anywhere, but that does NOT mean the power was shifted, merely lost.

Whereas a differently designed intake manifold will literally make an identical torque graph 5-1000 rpms shifted to the "right", a header will instead just lose VE in one spot to gain it in another.

Also, don't put words in my mouth, it happens very often on here.

[w00t692]

Originally Posted by raven1231

Regardless, it makes significantly less power at the dip he is referring to and significantly more where the larger original torque dip was. Is that slight dip worth the gain elsewhere? Depends on who you ask.

Depends on who you ask? I dont' know any single person that would rather 1200 rpms of lull in power over a quick 200 rpm drop at a low rpm.

We're talking 16% of the entire rpm range vs 2% of the rpm range afterwards

[raven1231]

Originally Posted by w00t692

Depends on who you ask? I dont' know any single person that would rather 1200 rpms of lull in power over a quick 200 rpm drop at a low rpm.

This is true , but I guess when we're talking about $1500 headers a drop in performance from stock anywhere may not be considered money well spent in everyone's eyes.

[w00t692]

Well we're talking about exhaust tuning though. To gain in one area you generally have to sacrifice in another area. Just have to figure out where you want to put that VE loss in order to make it not as noticeable.

Or it could very well just be the parts combination they were using on that setup and adding something else to it and retuning could completely get rid of that dip.

[Captain Insano]

Originally Posted by w00t692

Depends on who you ask? I dont' know any single person that would rather 1200 rpms of lull in power over a quick 200 rpm drop at a low rpm.

We're talking 16% of the entire rpm range vs 2% of the rpm range afterwards

You are seeing what you want to see the dip for stock is about 1500 rpm and the dip for the nameless headers about 1200 rpm wide starting at 2700 rpm. Sure nameless is only making less than stock for about 300 RPM, but that dip is a hell of alot bigger than 200 RPM. Sorry. Look at the chart again. Also headers can move power peak and valley. Sorry if you don't think so. Again it is right there in that same chart.

I am done arguing with you.

[Dustin]

Originally Posted by sato

Video please

Sent from my C6906 using Tapatalk

Fast forward to the 1 minute mark to get to the revving.

[ame="http://vimeo.com/89447816"]http://vimeo.com/89447816[/ame]

[ame="http://vimeo.com/89448416"]http://vimeo.com/89448416[/ame]

[ame="http://vimeo.com/89451804"]http://vimeo.com/89451804[/ame]

[Sargy]

Coated Header #4870 Shipped today.

[Sonolin]

Originally Posted by Dustin

Fast forward to the 1 minute mark to get to the revving.

...

This seems pretty mild actually for 3".

How loud is it in person on the don't bother the wife scale?

[Dustin]

So far it's fine. But I'm also running the stock mid pipe and axle back. Once I get my 3" on those, should be the "For the love of god can we please take MY car?" on the don't bother the wife scale. But that will also depends on which axle back you get.

[tennisfreak]

Originally Posted by Captain Insano

You are seeing what you want to see the dip for stock is about 1500 rpm and the dip for the nameless headers about 1200 rpm wide starting at 2700 rpm. Sure nameless is only making less than stock for about 300 RPM, but that dip is a hell of alot bigger than 200 RPM. Sorry. Look at the chart again. Also headers can move power peak and valley. Sorry if you don't think so. Again it is right there in that same chart.

I am done arguing with you.

What surprises me is that torque dip still being there AFTER a tune (a tune that took over a month to complete at that). This is part of the reason I would like to see a stock tune dyno run with this header.

[FrsDuke]

Interesting discovery today. When I installed my header I removed my track pipe and put my stock axel back on again. It was quieter than stock inside while a little louder outside with a little rasp but nothing bad. Today I put my track pipe back on and it is quieter inside than stock header with track pipe but louder outside. I've also noticed the drone I had on stock header is gone or perhaps shifted up out of cruising rpm. Maybe a slight drone at 4k now, but who cruises there anyway. I'm thrilled. It is a little raspy now, but I almost like it somehow. I dunno. Anyway thought it was interesting.

[Dustin]

I haven't seen a single header out there that COMPLETELY removes the torque dip. Don't know why people are expecting the same with this one.