"Well, there sure was an improvement - I'd found and killed one (two in fact) of those bloody negative boosts. But the improvement wasn't as much as I'd hoped for - so how much was it? Up until 4000 rpm there was no change - which is to be expected because the flow restrictions at low rpm aren't much anyway. But from there upwards, an improvement could be seen. The peak pressure drop was reduced (and that means the flow improved!) from 32 to 26 inches of water, a 19 per cent reduction. But unfortunately 26 inches of water is still a helluva restriction - I hadn't found and killed the chief honcho negative boost.

But - hell - I'd still made a measurable improvement. Slowly, slowly catchee monk-, er negative pressure. And what I didn't tell you is that last week I measured the actual on-road acceleration of the Audi through second gear. Using an accelerometer, you can measure how hard the car is accelerating every 1000 rpm, giving you a really good picture of what's going on with the actual on-road performance. And did it go better with the airflow meter screens removed, as you'd expect given the reduced pressure drop? Yes it did. At 7000 rpm the car could previously pull 0.25g - with the screens removed that increased 28 per cent to 0.32g. And that new-found top-end grunt was obvious on the road.

See, doubters, sceptics, ye of little faith? Find and reduce negative boosts and your car will go harder!"


Thats Awsome, im wondering whether its a smart idea to remove the screen?? This Julian Edgar guys is an absolute legend, ive got his latest car performance book and he knows what he's talking bout... I hope its ok to remove the screen. Cmon a 28% increase in G force jst by eliminating some negative pressure in the inlet is a crazy improvement, the removal of a screen in a sensor actually makes a huge difference!!!

Im sure its been thought of before, but i rekon some feedback from those who have tried would be excellent.

Regards,
crazed*MITSU*boy

I just read through the article as well and found it to be most interesting. There's currently a thread about CAI going on here http://www.aussiemagna.com/forums/viewtopic.php?t=1725&postdays=0&postorder=asc&start=0

It would be great if someone could drive around finding the negative pressure points in a magnas intake design i.e before the filter after the filter and after the mas.

Considering that the magna airflow meters don't have a screen, but rather the honeycomb matrix thingy... you cannot do this.

BTW removing the screen on an airflow meter puts the wires at risk - and for $300+ for a replacement (reco) you would want to think long and hard before doing this....

Cheers
Heath Young

ok throw that idea out the window... looks like Mitsubishi was smart enough to consider it as a major restriction, so they have a "cut down edition" :lol: lol

ehh... what can u say.

Lets just reduce the intake negative pressure by doing some intake mods.

About three years ago I removed that honeycomb section, and it is not good, your car runs about a minute before stalling, and just keeps doing it, so NO dont remove honeycomb section.

lol, ok... :lol: :x