I have told a very good and knowledgable friend of mine that sells only german cars. He knows his stuff and is NOT your normal stealership what so ever. But he has played with a 20v coupe to the degree that we, IMWS people, will be doing. And he said a major thing that could destroy the whole idea of this project is "fuel atomization", i think that is what he called it. But he was making sence in some parts, well sense as in i knew what he was saying. But is this a problem that we me encounter??? Or does this relate back to your "other mods" that maybe needed to be done once the IM is done. Also he mentioned that what we are doing may only be "felt" at wide open throatal and no where else, can that be true? He alos mentioned talking about how yes that darn screan is a MAJOR blockage, but it serves as a way to distribute the air equaly around the MAF so that say...The MAF reads a "3" but it is a "3" were the MAF is and is a "7" in a different location in the MAF.Where the screan makes it "equal" through out. These are just things i have been wondering and would love you hear your imput.

Thanx
André

that no fuel is introduced into our intake manifold and that it only flows air rather than an air/fuel mixture like carbeurated or throttle body injection on American cars? Or that by porting polishing our intakes in no way compromises but rather enhances the fuel atomization that occurs in the cylinder head when fuel/air combine? Further that more air at higher velocity provides for even more efficient atomization when it eventually makes contact with fuel? Engines love cool, dense and finely atomized F/A mixtures. But in our cars only the last 1" of travel see a fuel/air mixture. Everything before that last one inch is only air. We want that air which will eventually impact fuel droplets to travels as fast as possible and in as much volume as we can possibly get. Air moving at a faster velocity and in increased volume has a far better chance at atomizing fuel more finely than does a slower moving, smaller volume of air.

Typically what this person is referring to is the atomization that occurs in/on intake runner walls in cars that run fuel AND air thru their intakes. That better atomization needs a more coarse or textured wall to prevent large droplets from forming and thereby decreasing atomization. But since this person is so knowledgeable it's hard to know what he means by that since we won't ever touch a tool to the impact point at which that process occurs which is in the cylinder head on our cars and NOT in the intake manifold.

Lets make an imaginary example: Lets say we put a drop of gasoline on a work table in front of us. Now lets point a fan at it, turn it on high. See that little drop run away from the air? Now same test but this time with say 45-60 psi of air. Now blast that little drop of fuel. Where did it go? Which do you think was better at atomizing, the slow air or the fast air? Which drop moved over the table remaining intact? Which one disappeared altogether? Can we assume from this that one that disappeared became just another large drop on some other surface somewhere else in the garage or did it in fact atomize so finely that it became airborn? Now imagine that same scenario in a closed or confined area. Which would you think atomizes better?

Apparently he may also be unaware that we have a two-stage manifold with individual low/high RPM equal-length runners due to his thinking we may only feel any improvement in the "high end." While I concur that the largest gains will likely be felt there I'm in no position to know or even think that the low rpm runners will not exhibit a similar and equal improvement. But until I or someone finishes theirs neither your friend, I or anyone else is going to know anything empirical in this regard. It's never been done before so how can anyone say!?! Tho I'm inclined to think the Stasis IM is anything but untouched tho I also believe they would hold any cards in this regard VERY close to the vest. Race car guys have a bona fide need for secrecy.

The MAF screen is a "laminar diffuser" and your friend is correct in what it does. But it's not the ONLY style or type of laminar diffuser known or used by man. A velocity stack is a laminar diffuser AND velocity increaser. It can actually speed up AND smooth air at the same time. Screens are cheap while formed velocity stacks are expensive in terms of comparison to manufacture. But there's no arguing with their success on our cars by everyone thats used them. Additionally there's not been one error to-date in the form of a CEL related to the VS. And if your knowledgeable friend would test one with a multimeter on the MAF output voltage leads he'd see a far more stable and linear voltage output than is even attainable with a screen.

if there were gains to be made in the 12v intake manifold if he hasn't taken one apart to look inside. And if he has taken one apart to look inside and didn't realize than only air flows through intake manifold he's not a good mechanic, but who knows? Maybe someone who's never been inside the manifold knows more then whose who have been. but i doubt it.

dunno he may have been trying to trick me into not doing the project. I bought my 90 from him, so he does know the car. He does not just sell them but he works on all of them too. Also i had no idea what fuel atomization was unil i aked my dad and his reply was, "Well Cap invented it". Cap is my grandfater and he made a sonic fuel atomizer. And on of the amzing parts of the story is that Joe Lamborgini (sp) came to my dad's house to buy the injector patent from my grandfater. It was before he was known, but came from Italy to get it. Used it on home heating boilers, his first career, and may have on his cars, dunno. He had built one car when he bought the patent though, so how knows, but not really a HUGE surprise to me that my grandfather did something like that.

and I know some very smart, knowledgeable and very likeable people who need to be shown something before they believe or buy into it. The sad thing is those people are never innovators or conceptualists. They are only replicators, doing what is known and/or has gone before. Too bad too because for the most part they are incredibly bright and likeable people... they just lack imagination and arent risk-takers. They follow recipes and make nothing on their own from scratch.

And it is entirely possible it's out of genuine concern for you. That he's just playing devil's advocate... trying to help.

It's ok as I'm used to that. Hell look at this forum in the early days when I had this silly velocity stack idea or Stage 3 MAF nonsense that was sure to screw car fuel/air ratios up BIGTIME. People said "those'll never fly." Today they drive em!

But it's ok if people wait on the intake manifold, let the pioneers and risk-takers lead the way. Besides, one done 6 months later should work as well as one done early-on. All the hemmers and hawers give up is initial bragging rights... no biggie.

sure TDL seems to be gone, but does not mean thier ideas are ;)