Ferrari Mailing List: Re: K&N and MAP Sensor Question

[Charles Perry (charles]

I've had the problem for years with my Corvette. I can only use a K&N
since it matches the size of my supercharger intake. So far it has not
killed a MAF sensor, but it does create problems. I can be driving
around perfectly normal and all of a sudden the car will start bucking
and jerking like a throttle position sensor had failed. It hasn't - it's
just that enough oil has collected on the sensor to make it give bad
readings to the computer. The car becomes undriveable.

If I pull over and shut the car off for 3 minutes, the GM MAF sensor
goes through a self-cleaning process where it superheats the MAF wire,
which burns off the contaminants. After that it'll run perfectly again
until the next build up. That can be a few hours on a freshly oiled
filter or a couple of months on a filter that's been in a while.

K&N's web site swears it's not them, but on my car, it is them.

-- charles



-----Original Message-----
From: LS [mailto:lashdeep [at] yahoo.com] 
Sent: Wednesday, January 30, 2008 3:57 PM
To: Charles Perry
Cc: The FerrariList
Subject: Re: [Ferrari] K&N and MAP Sensor Question

This happens frequently on any over-oiled air filter...

----- Original Message ----
From: rich <richF355 [at] comcast.net>
To: LS <lashdeep [at] yahoo.com>
Cc: The FerrariList <ferrari [at] ferrarilist.com>
Sent: Wednesday, January 30, 2008 3:46:30 PM
Subject: [Ferrari] K&N and MAP Sensor Question

Some time ago i believe someone made a post regarding  MAP Sensor
failures as a result of the oil residue from K&N filters on their
Ferrari.
Am i remembering correctly and was that determined positively to be the
cause of the MAP sensor failure. I had a MAP failure  not too long after
instaling a K&N filter in another car of mine and wanted to  find out if
this is a known cause .
Thanks , Rich
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