I took my 01 mustang to the shop and this is what they said about K&N fliters?

Question:
the rep said that the K&N fliters are really bad for fords and dont seal well. then he told me that caused my master censor chip to go out. the best part about it is it cost me 600 bucks. when the that was the fliter they had on it when they sold me the car. are K&N fliters really bad? also if the car is not accerating would that be the chip
thanks

Answers:

Oil change 5w30 vs 10w30?

they are just making exuses, they don't like them because they know they can't sell you one of their overpriced crappy paper ones, just wash yours and oil it

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Can I tow a trailer with a 99 Chevy Malibu 6cyl.?

Hi, many problems could relate to a sensor. I know from experience that volkswagen cars don't like K+N's ('Green' are fine though) because they are over oiled and it coats the MAF sensor making it unreadable

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Clicking sound coming from under my car!?

K&N are really good to use. They have a million mile warenty. Anyway, they are build to filter the air without going bad. They tend to filter the air a little too good in the higher elevation. Being as the thinner air makes cars breath heavier here. Anyway, that would not be the reason for the problems. However, the chip being bad could cause it. Check into a good tune up and an injector cleaner.

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Front brake problem/ Cant seem to bleed. Working on front end and had master upside down for a few days. Help?

if the K&N is over oiled, it can cover the mass air sensor and cause it to fail. If you clean the treat the filter the right way, there should be no problems.

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Will removing your CAT from your car make it go faster or will you lose low-end power?

I'm assuming this was the dealership. They always say crap like this. It's easier for them to assume that anything not stock is to blame for anything that fails, so they do. They especially like to pull this one when the car is under warranty and throwing a check engine light.

Fuel Regulator problem?

It's just not true. A K&N filter is superior to a stock paper filter in every way unless it's over-oiled, in which case the excess oil can coat sensors.

My AC is leaking refrigerant, what should I do?

As far as it not sealing well, that's just plain BS. If you can look at the filter and it's covering the hole going to the air hose, it's seals just fine.

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I have a 1997 Ford Explorer, my security alarm goes off 45 minutes after I lock the doors,?

I think that guy is full of you know what!

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