Nameless Performance Equal Length Stepped Header

[ft_sjo]

Assuming that the near-perfect proportionate increase in torque on this manifold is bullshit, the torque gain during the infamous 'dip' is still worthwhile (albeit it about half the torque difference claimed).

I am curious if this can be achieved without a tune. If not, I am then even more curious if the tune is the primary reason for this torque increase? If double-so, i'd like to see the same tune used on a car without the manifold/header to see what the gains would be.

Somehow I doubt that's going to happen though!

[OrbitalEllipses]

You seen a Visconti or any other tune putting out that much torque? Changing acoustics and not tuning for it seems dumb IMO, but what'd you'd like to see - if I understand correctly - is a tuned car without this header that was then retuned with this header.

[ft_sjo]

Originally Posted by OrbitalEllipses

You seen a Visconti or any other tune putting out that much torque? Changing acoustics and not tuning for it seems dumb IMO, but what'd you'd like to see - if I understand correctly - is a tuned car without this header that was then retuned with this header.

You don't understand correctly. The objective is to understand if it's the manifold or the tune which is the primary reason for the increase in torque during the dip.

There are other manifolds which have clearly displayed the tune is a big reason for the improvement in torque.

[mad_sb]

Originally Posted by ft_sjo

You don't understand correctly. The objective is to understand if it's the manifold or the tune which is the primary reason for the increase in torque during the dip.

There are other manifolds which have clearly displayed the tune is a big reason for the improvement in torque.

It's the manifold that allows the removal of the dip. All of the long tube equal length headers are showing this kind of result, the dip is either eliminated or turned into a hump. So far, the 4 into 1 long tube designs seem to eliminate the dip, while the nameless 4 - 2 - 1 long tube turns it into a hump.

Pump gas tunes without header have not been able to eliminate the dip in any way. Most tunes have been able to reduce the width (mainly by tweaking cam timing, you can climb out of the dip sooner in the rev range). I think i have seen one tune that was able to reduce the depth but i don't recall for sure.

I have multiple logs where you can see the airflow just sags during the dip, regardless of cam timing, ignition timing, fuel, etc etc with stock exhaust system. Now, if you left the stock cam timing in place and put on a long tube header you will not eliminate the dip because the stock cam timing is far from optimal once the stock header is replaced with a long tube unit.

I'm willing to bet money that i can blindly create a cam timing map the when combined with the P&L or nameless header will eliminate the dip... It's very simple... full advance on the intake cam and about neutral on the exhaust cam.

[OrbitalEllipses]

Originally Posted by ft_sjo

You don't understand correctly. The objective is to understand if it's the manifold or the tune which is the primary reason for the increase in torque during the dip.

There are other manifolds which have clearly displayed the tune is a big reason for the improvement in torque.

Tunes have never eliminated the dip... see post above.

[Dimman]

Originally Posted by mad_sb

It's the manifold that allows the removal of the dip. All of the long tube equal length headers are showing this kind of result, the dip is either eliminated or turned into a hump. So far, the 4 into 1 long tube designs seem to eliminate the dip, while the nameless 4 - 2 - 1 long tube turns it into a hump.

Pump gas tunes without header have not been able to eliminate the dip in any way. Most tunes have been able to reduce the width (mainly by tweaking cam timing, you can climb out of the dip sooner in the rev range). I think i have seen one tune that was able to reduce the depth but i don't recall for sure.

I have multiple logs where you can see the airflow just sags during the dip, regardless of cam timing, ignition timing, fuel, etc etc with stock exhaust system. Now, if you left the stock cam timing in place and put on a long tube header you will not eliminate the dip because the stock cam timing is far from optimal once the stock header is replaced with a long tube unit.

I'm willing to bet money that i can blindly create a cam timing map the when combined with the P&L or nameless header will eliminate the dip... It's very simple... full advance on the intake cam and about neutral on the exhaust cam.

What does overlap look like in the dip?

In all honesty I think they could get rid of the last mini dip by stretching their system secondaries length a bit. I think that was part of the reason for the v-band adjustment, testing length variations.

[mad_sb]

Ignore that the map names say "safe" these are the cam timing maps used once up to temp based on all of my logs. Bigger numbers = more advance.

[Xdragonxb0i]

Are the DYNOs include a tune on the car? or no tune

[OrbitalEllipses]

Originally Posted by Xdragonxb0i

Are the DYNOs include a tune on the car? or no tune

Tune by English Racing.

Read people, READ!

[pheoxs]

Originally Posted by OrbitalEllipses

Tune by English Racing.

Read people, READ!

So they had an aftermarket tune then?

Haha

Can't wait for the final release of these headers and more dynos showing up. Also curious to see what the other tuners can do with a properly tested system

[Calum]

Originally Posted by OrbitalEllipses

Tune by English Racing.

Read people, READ!

I love the irony of this, considering the horrible English in the post.

[BrzRacer]

Is this still coming out? It's been in production since last year? Anyone knows?

[mad_sb]

Originally Posted by BrzRacer

Is this still coming out? It's been in production since last year? Anyone knows?

They should be starting production very soon now.


... i hope

[civicdrivr]

Originally Posted by BrzRacer

It's been in production since last year?

Its been in prototyping since late last year. Its seen a few revisions. Let them work out all the kinks.

Sent from my Nexus 4