I have had a K&N in a TDI for over 300,000km. NO MAF problems.
Pros: no MAF problems
Mileage: 300000 km
Reviews of K&N air filter
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As been the pattern with the 2.5 engine, if, you install and intake and get a CEL recheck all connections making sure the 2 smaller hoses are tightly fastened and without kinks. Make sure that the MAF is properly seated in its housing.
Pros: tightly fastened hoses
Cons: CEL after install
I personally haven't had any trouble with my K&N's
Pros: no trouble
on my turbo it revs a little faster.
Pros: revs a little faster
I dropped one in and got better gas mileage, noticable power increase (slight), and a badass sound.
Pros: better gas mileage, slight power increase, badass sound
I have an OE replacement filter in my GTi. Can I tell a difference? Not much in the GTi
Cons: no noticeable difference
Vehicle:
Volkswagen Golf
I've used it in a few of my cars, and have noticed a very slight (~1-2mpg) increase in mileage. Power, eh, if there's any I can't feel it...
Pros: slight mileage increase
Cons: no noticeable power gain
last night everything was all normal, K&N filter in the stock airbox with one side cut out. sounded pretty nice. ive had this setup for a little over 6 Months .. Today i start my car and head off to work as normal. and i notice its being very very quiet (almost stock sounding)
Pros: sounded pretty nice
Cons: being very very quiet
I had installed a K&N air filter and noticed a good increase in power and fuel economy.
Pros: good power increase, better fuel economy
Vehicle:
Volkswagen Jetta
In my passator, I had a KnN right on the maf, it felt awesome but when the engine gets hot, the hood thermo liner didn't let any heat escape, to the car felt like an 8v
Pros: felt awesome
Cons: sluggish when hot
Vehicle:
Volkswagen Passat
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