Well I'm gonna assume it's gonna be pretty similar to other aftermarket IM's go for.

Nice, that'd be interesting. Was this designed with high end performance in mind (large chamber) or just all-around gains throughout the entire tach?

I'm assuming the later since you mentionned the plenum was greater than 3.5L yet it still has fairly long runners for low-mid range. That right?

 

So were there gains?

Looks pretty close to the HOT TopSecret plenum. Make it look slightly more like this one and show gains and you ought to get plenty of business with this.

 

is there a benefit to having the velocity stacks longer or shorter?

 

My understanding is the shorter they are the more horsepower you get in the top end and the longer they are the more torque you get down low.

 

one suggestion.. make sure the vaccum port on the top right near (where the fuel damper is) does not interfere / extend to this area, some people are running fuel pressure sensors block adapters..

 

how about an n/a dyno?

 

I could care less about looks: if it works it works. My concern is the potential “dead air pockets” marked with an “A.” The air is fed by the big side tubes, then hits the flat wall which I have marked. I would prefer that the outside pipes be smoothed so that they meet the edge of the pipes for the front two cylinders.

Also, a common problem with upper plenums and intake manifolds is the front two cylinders are located the greatest distance from the source. So that these two cylinders are always working with “leftover” air.

One day someone will give us an intake manifold which moves the throttle body to the front of the engine instead of routing the air from the front of the car all the way to the back of the engine.

 

Like the vette's and camaro's?

 

Then the problem would be reversed, you have to shape the manifold to correct it. Thats why the ends are taperd down at the last two.

I hope to see the bhp numbers soon and maybe flow numbers sooner or later.

Awsome work Tim.

 

I believe Tim has already adressed what you are saying ...............

 

that is one nice piece love that way it looks, and itd be even better when powdercoating becomes and option.

 

Will it make a cool sound or an annoying noise? That is one of my biggest concerns.

 

I got a chance to see this in person on Saturday, that manifold is truly a piece of art. All aluminum and immaculetly welded. Teh runner transitions (that I could see) were great. All around an amazing piece. Tim is one hell of a fabricator no doubt about it.

 

Would it even make a differance which side the air is coming from? The cylenders the farthest away will always have this problem.

 

This is true...the Only way to even come close to truly resolving this would be to run two throttle bodies and split plenums..

 

That's what I was going to say.

 

Yes. Word on the street is that Nissan put the throttle body in the rear to keep the front of the hood low. Don't know if that's true or just an educated guess.

 

Ummm...I forgot about that.

 

Can the TB signal be split , to run two TB's ? And I think you would have to run two MAF's ? Could the ECU be made to except a signal from two MAF'S ?

 

Which would push the price to $1,000 plus. That’s too much money for most naturally aspirated 350Z drivers.