Nameless Performance Equal Length Stepped Header

[Acree]

Originally Posted by naikaidriver

This is WAAAYYYY off subject but honestly, new intakes (whether CAI or short ram) don't do anything for the torque dip. In fact, there are some intakes that make it worse without a tune.

If you want to eliminate the dip, it looks like your choices are, forced induction, header and tune, e85 tune.

Scott

I believe before it's all said and done, the torque dip will be completely remedied. But it will take an intelligently designed aftermarket intake manifold, exhaust manifold, full exhaust, and a tune. It will have to be the entire combination.

-Acree

[naikaidriver]

Originally Posted by Acree

I believe before it's all said and done, the torque dip will be completely remedied. But it will take an intelligently designed aftermarket intake manifold, exhaust manifold, full exhaust, and a tune. It will have to be the entire combination.

-Acree

I was only talking about parts and services available today, not in fantasy land.

Scott

[wootwoot]

Originally Posted by naikaidriver

Thanks for all of the help you have been providing Hawaiian! Mahalo!

Your efforts truly are invaluable to the community as a whole!

Scott

Are you confusing this thread with the P&L header thread?

[naikaidriver]

Originally Posted by wootwoot

Are you confusing this thread with the P&L header thread?

Damn! You're too fast wootoot! You quoted me before I could say "OH SHIT! WRONG THREAD!!"

Haha!

Scott

[LeeMaster]

Originally Posted by reeves

Hope this isn't too far off subject, but would a CAI intake with longer piping work better than a short-ram intake? As far as making the most difference to minimize the dip? Or is it negligible?

I came from a K24 and from my experience the gains from those were...

CAI = High rpm hp
SRI = Mid rpm hp

For the K series a simple tune will eliminate any dips, so for our FA20 I am thinking it really has something to do with the D4S or possibly something from the engine itself..

[Acree]

Originally Posted by naikaidriver

I was only talking about parts and services available today, not in fantasy land.

Scott

I would bet Nameless would have something to say about that eventually.

-Acree

[johnbradley]

Originally Posted by reeves

Hope this isn't too far off subject, but would a CAI intake with longer piping work better than a short-ram intake? As far as making the most difference to minimize the dip? Or is it negligible?

Havent tested various lengths other than stock on the FRS/BRZ, but the Honda like shorter.

[naikaidriver]

Originally Posted by Acree

I would bet Nameless would have something to say about that eventually.

-Acree

..and until they release a product you are speculating wildly. Again, today, not fantasy land.

Scott

[Acree]

Originally Posted by naikaidriver

..and until they release a product you are speculating wildly. Again, today, not fantasy land.

Scott

I'm not "widly" speculating. Regarding the intake manifold and exhaust manifold being integral in removing the torque dip, this is just plain engineering 101. There are harmonics and resonance in the airflow that exist based on multiple physical variables with the stock manifold designs. Why do you think Nameless's Header moved and crunched the torque dip down the torque curve? Their design changed the frequencies.

I'm also not "widly" speculating about Nameless having a solution for both sides. Once they get to that point, I'm sure they'll release information.

-Acree

[johnbradley]

Originally Posted by Acree

I believe before it's all said and done, the torque dip will be completely remedied. But it will take an intelligently designed aftermarket intake manifold, exhaust manifold, full exhaust, and a tune. It will have to be the entire combination.

-Acree

Based on what we have seen with B series NA stuff I think the intake manifold is the next likely canidate. The dip on those happens near VTEC crossover and is especially bad when the cams dont match either the displacement or plenum volume.

Originally Posted by naikaidriver

I was only talking about parts and services available today, not in fantasy land.

Scott

Just remember before 2 weeks ago if someone had told you that a simple header change could do this you would have replied "fantasy land". Today's dream is tomorrow's reality. I would also never underestimate what the right group can do with willingness to do lots of testing and fab ... also having math on our side is a pretty important angle.

[Acree]

The signature is hilarious...

-Acree

[johnbradley]

I got 2 warnings on the EvoXforum cause they kept thinking I was trying to sell stuff. Obviously we are vendors on other boards but anywhere I am not I try to make that abundantly clear. Look at Geoff@full race, he was trying to share info and got banned because the data was about BW turbos. True, he sells them but it was data not sales.

[naikaidriver]

Originally Posted by Acree

I'm not "widly" speculating. Regarding the intake manifold and exhaust manifold being integral in removing the torque dip, this is just plain engineering 101. There are harmonics and resonance in the airflow that exist based on multiple physical variables with the stock manifold designs. Why do you think Nameless's Header moved and crunched the torque dip down the torque curve? Their design changed the frequencies.

I'm also not "widly" speculating about Nameless having a solution for both sides. Once they get to that point, I'm sure they'll release information.

-Acree

The only thing worse than trying to make a point to someone who is stupid is trying to make one to an engineer. I should know...

You don't have to explain to me about balancing airflow and exhaust gas evacuation efficiency, harmonics or pump optimization. I get it, I've been working on cars a very long time.

Here is all I am saying. Unless you have some "inside information" within Nameless that they aren't talking about, or are involved with (or have access to) the flow analysis studies with the FA20 induction system, you are speculating on solutions. You can't solve any engineering solution without declaring the variables (Engineering 101 right?)

In my world, certainty extends beyond the realm of belief and until there is something concrete, it doesn't exist. I'm not saying it "won't exist" and certainly not "can't exist", just that there is nothing to substantiate the conclusion TODAY! If that is incorrect, please provide contradictory evidence and I'll take it into account. I would be thrilled to see it!

Thanks for helping turn a guy's simple question into a semantics contest between two egg-heads.

Scott

[buditjoenawan]

Originally Posted by johnbradley

Based on what we have seen with B series NA stuff I think the intake manifold is the next likely canidate. The dip on those happens near VTEC crossover and is especially bad when the cams dont match either the displacement or plenum volume.

Have you guys tried race gas to rule out an overactive knock sensor. I know the logs doesn't show activity, but Subarus have had a long and terrible history with phantom knocks.

- budi