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[ Follow Ups ] [ 2002 Message Board ] [ Msg. Board FAQ ]

Posted by Nobody Special on June 28, 2001 at 10:56:33:

In Reply to: Would a K&N air filter hurt performance? posted by cboone on June 28, 2001 at 09:43:42:

I know I am treading on it a bit here, but ...

The stock air cleaner flows a whole bunch. There is a lot of media, even though it is paper. Also the two small inlets running into the large can probably cool the air a few degrees. No biggy, but still working in the correct direction.

The problem with the big can, from my view, is that is is a big can. It is in the way. If you don't work on your car yourself, this is not a problem. Keep it. Any performance gain at all would not be worth replacing it.

I replaced mine. I also have matched the intake and exhaust ports and smoothed everything I could reach with a bit. These things increase air flow as well.

As good as the germans were/are with stuff, even they had manufacturing tolerances to deal with. First order common sense says the the variance in air flow between as-cast assemblies is going to be a real number.

The pump is capable of delivering a lot of fuel. Yes the map is hard to get perfect, but the map is never perfect for any car since they all flow differently within some tolerance envelope.

I built an O2 sensor/meter for my car to verify the fuel map. Playing with the "don't touch that" screw and taking careful notes, I am happy.

At 2350 lbs, it will go 0-60 in 8.5 seconds bone stock other than the K/N and smoothing and electronic ignition. Measurements taken with a g-tech.

There, I have said it.

'72 tii
'79 R100RS

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