K&N drop in filters
 

Thinking about picking up a few of these and throwin em in to see what they do. Some people seem to like them some think they do nothing. Are they ready to go out of the box? or do I need to oil them like i've read? or do you just oil them when you clean them? I've got about 28k miles on my stock filters so they've gotten some use at least. Also with my fast intentions exhaust and if i install these filters do I need to get a tune? I don't think I would with just those 2 things.

Just drop them in and go. Only need to oil them when you clean them. Can't say I noticed any real difference between these and the stock filters though. But my butt dyno may be out of calibration. :icon17:

I don't think you need a tune with just the FI CBE and the drop ins. I guess I will fine out when I get my FI in late Sept. :eekdance:

Simply put, don't. The oil used has been known to mess with Nissan MAF sensors. It'll coat the sensor causing erratic readings. I would suggest saving money for an extra month and going with a pro dry filter setup on a CAI or SRI.

http://www.ar15.com/images/smilies/anim_bs2.gif That is urban myth. If you ever have a problem call K&N & they will fight the dealers claims 100% K&N Response to Mass Air Flow Sensor Concerns Drop them in & go. By the way dry filters don't filter as well. You might get a little better airflow, but at loss of filtration.

Dry filters offer the same filtrations as a stock filter, the issue with K&N filters is that people do not know how to properly clean and oil them. I can't tell you how many cars I've had to remove the MAF and clean due to a heavy oil coating which leads to a heavy dust coating that cause the sensor to cause a higher than expected resistance, dumping extra fuel, ect ect. However, you're entitled to your own opinions.

I've had the filters in for about 15k now.. No complaints.

No tune should be needed, but when you do get a tune, youll probably squeeze a few more whp out of the filters and exhaust.

Interesting little test here
What Does It Take to Foul a MAF Sensor? Extreme Testing Draw your own conclusions :tiphat:

Having faith in a company to be honest about it's products is like saying our government has our best interest at heart.

Looking at their website I do like that they really stand behind their product. I'm not really looking to install a full CAI. I have an FI exhaust and I wasn't planning on doing anything more as far as performance goes..but these filters just look like they are a nice simple minor performance mod. I have an extended warranty also so a simple mod like these filters is appealing. If I tracked the car or just used it on weekends hell I'd probably have a twin turbo in it, but I dd my Z so I'm not going too crazy. I think I'll take a trip to auto zone tomorrow and at least take a look at them. Which means I will probably buy them :driving:

FYI I'm making a DIY cai. For a few dollars more than drop in's and a post MAF tubes, and way less than stillen cai, I think it's the best of both worlds!! It will be using the stillen k&n filters and if you don't want post MAF tubes to save on price then it's very close to the drop in price and nice cold air from the bumper.

So I just installed the k&n drop ins and drove down the road real quick. Tough to notice anything initially, if anything the engine is a little louder. The old filters had about 29k miles on them and were fairly dirty. The clips that hold them into the air boxes are fastened pretty tight with the new filter. I'm almost afraid the clips could pop off if I go over a big bump. Has anyone had this problem? I'm sure they're fine though. Il give an update again tomorrow after I drive to work and back.

:tup: i have had zero issues. K&N filters first thing i installed too. Actually got mine from Alcheng (a forum member) used!

I read that they are a snug fit but should be fine.
http://www.the370z.com/intake-exhaus...p-filters.html

I just ordered mine this past weekend and will be getting them in later this week myself :tup:

in for updates though

I have had no issues with these filters and you can see my gains with a tune and other exhaust mods in my signature line. I would definitely suggest going this route if you have any plans of going force induction in the future!

I have a G37 and installed these over the weekend. My car yelled at me when I pressed the START button "took you 50k miles before putting a set in for me! Bastard!" Got a great deal too -- 47.00 each! Yeah!

not it is nothing like that at all, you can sue a company for falsely advertising their product, or if their product broke your property, ect.

you can not do that with the government however so companies unlike the government do not want someone to sue them and spread bad things about them because not only will they lose money, they will lose business and losing business means losing money on top of the money they already lost

that is user error then and not the company's problem, if you stuck them in and out of the box they killed your MAF sensors, thats a different story

Decent gains for little cash -- I (and others) have several dynos posted to verify this. Search.

I have an extra set on hand with just under 3K on them.

PM me, I'll sell 'em both to you for $65 shipped.

^thanks, but just installed mine yesterday. 99 bucks for the 2 of them, I thought that seemed like a decent price considering I've seen them for for 60 or 70 each elsewhere. I did feel like I had slightly better throttle response and power today when I got on it a few times. Maybe it's just a placebo effect but I'm happy so far.

^^^ good deal!! Mine still look new after 15k.

Don't know how accurate this is... but I took the neg battery terminal off and reset the ECU. Had to reset a couple things, Headunit, Windows, etc..

But after I did that, I felt such a BIG difference. & it took about half a tank to relearn my driving, but i was mashing the pedal for about 150 miles after the reset. The car seems to have much better throttle response in 4th & 5th then it did. I am sure the ECU learned that the new filters were there and ready to rock.

What do you actually do to reset the ecu? Will doing that void my warrenty or make the dealership get pissy?

Wont void warranty by any means. This isnt "Flashing/Tuning/Messing" with the engine at all. Its simply removing all of the computers stored learning of your previous driving habits. For example if you have the 7AT and shift in manual mode at 2500 everytime, then reset the ECU and shift at 4000 everytime, throw it back into "D", and the car will shift automatically for you at 4000rpm because thats what the computer thinks you want to shift at.

At least, thats my take on it all. The harder you drive after ECU reset, the more the car comes alive. Just my opinion. It could all be in my head, but who cares.

http://www.the370z.com/engine-drivet...ve-method.html

:tiphat:I learn so much in this forum and from the members. love this place.

Yea I looked at a few threads, sounds like there are a couple different methods to do it involving disconnecting the negative battery terminal and then a few other steps. Sounds like the procedure for it is in the manual. il have to check it out later tonight. I can probably benefit from resetting it considering I have an FI CBE and the drop ins. The drop ins I consider 1/2 a breathing mod. So I have 1.5 breathing mods which I don't NEED a tune for but this ecu reset might be perfect.