Thx for the link. Read most of the 11 pages. and then read other link posted for 90mm Giant mouth. Seems they or any one doesnt make them anymore. Sooo back n the same boat

 

thats what I said, coulda saved you all that reading.

 

Still a good read so I didn't mind

 

The Doctor always has a connection!

 

a lot of people with vq35s in the maxima community always bashed the idea of using a 90mm TB (q45 cable driven tb for us) and no one ever pursued it. i guess this proves them wrong as long as you get the ***** tuned and have one of these mani's....

good work man, keep us posted

 

and cams, and long tube headers (or a header that comes close to the overall dims of these) - none of this stuff works in a vacuum

 

More detail Adam. I'm learning

 

In a very general sense, the relationship between the intake manifold, the cams/heads, and the header, is what makes or breaks an NA setup. Once the engine is being asked to suck in the air, vs an FI setup where you're shoving the air in. These components have to be setup to take advantage of one another- to improve the velocity, and volume of air that is ingested, used for combustion, and expelled. None of the stuff on it's own offers a tremendous benefit, it is when the 3 pieces are combined together, they all can shine. It's why headers on their own don't generally have tremendous gains, why cams on their own don't provide tremendous gains, and why other replacement manifolds don't provide tremendous gains, when installed/tuned on their own. But, when you combine them together, it's a different animal. To really maximize what these things can bring to the table, means committing to the whole enchilada - they need each other.

 

great explanation.

 

Ok I understand that now. Thx

 

Great info, I understand how these work together. One question i must ask is when upgrading say the intake manifold and throttle body, What are the requirements of upgrading the header which you are needed to match the intake and maximize power.? What type of header would be required in order to fully benifit from changing to this intake manifold and tb combo? thanks

 

this is what i've always said. The more you suck, the more you have to blow. haha! when you change one part you have to go down the line in the chain reaction to compensate for the after effect of one.

 

The better question is "What do you want from your powerband?" A broad powercurve over the range or a peaky upper rpm higher HP car. Then make your decision based on that. Dont forget the cams that should be included in that combo.

 

That's the $100k question - which works best.

The best answer I can give you is "it depends". Engines work off of pulses. Air being fed into the combustion chamber as the valve opens on the intake stroke, and being pumped out head to the exhaust on the exhaust stroke. Since the plenum is a closed environment, the air in there also works at a specific frequencies as it bounces around and is sucked through the throttle body into the combustion chamber. So, it really takes some specialized equipment to measure out which components will compliment one another. Even then, it takes a pile of parts, a dyno, and a whole lotta free time, to give the scientific info a chance to prove itself in the real world. On the exhaust side pulses and frequency come back into play. You're looking to increase velocity without compromising volume. You'll notice the intelligently designed headers out there have several things in common, from pipe diameter, to overall length. This isn't by accident.

Test like these are good because in the absence of purely scientific data (or sometimes just plain educated guesses) let you stumble on some new trends. You get to play around with different designs and see where the weak links really are.

If you are truly serious about making an NA setup work well, have a useful powerband, in the absence of the time and money to test every conceivable combo, is to just read. Read what others have done - look at the specifics of those components (not always the brand, but the specifics of what that component brings to the table), and you'll start to see a general trend of which parts compliment each other well. You don't even always have to read about a VQ - you will learn alot by reading about engines in their very general sense as well. The V8 domestic world has alot to teach us, and many of those same trends can be applied to what makes this specific engine shine.

 

More updates!!!!!!

 

Late to the game, but nice video. The car has a real full-blown race sound to it. Good luck.

 

+1000000000000000000000000000000000

i wish theyd take it to a dyno jet before they claim the "Highest Hp on stock interals"

 

^Go look at his thread where he tested the Longtube headers, the topic has been discussed and he also has a stock G35 dyno run on his dyno there.

 

and that would prove what exactly?

why would they take it to a dynojet, when they own a dynapack?

they aren't selling anything here, and you're not buying it anyway - all they are doing is trying new things, and posting the results

 

^ yeah he's pretty much right.