Had a member over in NissanFrontier.org find this. A very interesting read, and very surprising. I always knew there was a payoff, and never really did believe a K&N would give you 5 extra HP.

There are 2 different areas here. One is done personally using different filters for Air Flow, and Filtration. The other is a test done by a university for AEM.

 

I'll tell you I definitely noticed a difference w/ mine.

 

Butt dyno?

Or real dyno?

 

Or after having a very dirty filter... that'll make a difference in itself.

 

it probably will give you 1 HP....... it is mostly the cool sound it gives you.. especially with an aftermarket intake

 

What kind of KN are you guys talking about? A cone filter set-up? Or the drop in (stock-shaped) airbox one?

 

The test done was with the stock drop in. That is the style I have in my Toyota. I didn't notice much difference in power, but my gas mileage did improve.

 

Agreed. I installed a KN OEM style and didnt notice a damn thing. Then I cut and drilled the factory airbox and noticed some power on the 'butt dyno' and it sounded way mean even with broken studs. Then I installed a cone filter and didnt notice any increase of power over the ghetto airbox "mod" but it did sound even cooler. If I were to do it all again, I would get a MAF bracket and a cone filter. FYI this all applies to the VG which will never sound as bada$$ as a VQ with the same cone filter. Havent heard a NA VE30DE to compare too.

 

I had noticed quicker revs, and better throttle response when I had installed the drop in filter with my Maxima.

 

me too, not a huge difference but noticeable

 

i did not notice a damn thing when i bought my replacement K&N drop in for the 3rd gen. only dif was a bit of an increase in fuel economy.

 

How much did you guys pay for the K&N vs stock?

 

K&N panel filters are about $40-$50

Stock paper filter..About $10-$15

 

.

 

Ok...$5.99......

 

Ok guys I bought a K and N panel drop in filter and the nissan tech said it created a oily film on the maf sensor and that was why my idle was lopey so he put in a paper one and gave me back my K and N I liked it when I had it but has anyone else had a prob. like this?

Thanks

 

I've used K&Ns on/off on the maxima since 1998. I've never ever had a problem with oil on the maf.

But I'll tell you guys this, VG maximas have a habit of not liking aftermarket filters. Not all have this but I've read of plenty having problems. My bro's VG 5-sp did this

 

Naw. Even the panel for my G was only $30 on ebay.

 

I have a 89 Se with the VG engine and when he put the crap paper filter in there the idle was helped alot the lopeyness stoped allmost .... But I want to buy a a high flow paper filter now!!

I am just ticked I wasted 40.00

 

I've read that test. I've also run Blackstone lab analysis on my oil with K&N filters installed. I've not seen any elevated levels of silicone (ie.. dirt) as a result of using a K&N.

 

Shawn?

 

And it's nothing a little electrical cleaner couldn't cure. Friend's Camry had the same problem. I cleaned it up, and he hasn't had a problem since.

 

So you took the MAF out and you sprayed electrical contact cleaner on the sensor let it dry and it cured the prob with using a K and N filter ?

 

MR2 Spyders are very notorious about that. We stay far awak from oiled filters because the MAF is right next to the filter box. The MAF needs cleaned just about every oil change as it is, but an oiled filter only makes it worse.

I still haven't figured out why they always need cleaned on the MR2. Its like there's some sort of filtration issue on these because they get dirty after 3,000 miles easily (even less in the past). Throttle repsonse goes to hell and there is noticable power loss. Spray it with some carb cleaner and the thing runs like new.

 

Is the carb cleaner too strong? I have heard it could eat the senor up do you think some electrical contact cleanerwould work?

Thanks!!

 

 

Thanks I did know that product existed but I couldn't find it in any stores...

Good Idea If I order some

 

I work at advance, and one of my managers said we cant get it but Im going to double check that. I got a can from napa for a few bucks a month ago.

~Alex

 

It works for me. The MR2 guys have used carb cleaner for a while so it seems to handle it in the long term. The MR2 maf is a bit different than the Maxima one though so its very possible it could do different things to it.

 

Exact same stuff as CRC's Electronic Cleaner. Carb Cleaner is too abrasive for MAF sensors, and will ruin them. Same thing with Brakleen. Note, that there is only 1 extra ingedient in CRC's Carb Cleaner, than CRC's Brakleen.

 

Did anyone convert their Air intake piping when they moved to the cone filter? I'm wanting to get a WSP CAI ($175) for my VG. Anyone got pictures and opinions of it?

 

I converted mine to a HAI mandrel pipe. Honestly, the stock intake tube worked better since it was 4"

 

so, you didn't notice any difference, except for more engine noise? I would have assumed that since the intake pipe was mandrel/smoother inside the air flow would be better?

 

maybe if you had your intake manifolds polished and ported, along with the intake tubing, you might get like 4 HP..

 

Better throttle response is the main thing you will notice, along with the noise.

The stock intake did seem to have a better top end, the mandrel stronger on the low end. But that's just butt dyno.

 

Sorry to dig up an old thread. But I need to address my poor engine/throttle performance. I am getting sporadic rev alterations while driving, especially during acceleration. And sometimes the engine just wants to almost die when I push hard on the gas. I was advised by a mechanic that it might be a bad MAF sensor, but my suspiscion is that it is just a dirty one.

I've have a cheap eBay cone filter attached to my MAF for the last 40,000 miles, and with all the dust here in Florida from back dirt roads I wouldn't be suprised if it's gunked up the MAF. My question here is about the filter. What is the best way to clean these filters? Is it necessary to oil them? If so, what type of oil should I use and how is it applied? Also, are cone filters like those from Stillen, K&N, or Monster Flow (WSP) better quality than those generic ones from eBay, and if so, better able to protect from dirt and keep the MAF clean?

If I do in fact have to change my MAF sensor, I have heard something about those from the Z32 or Cobra. Would one of these provide better performance, especially if I want to go turbo with my VG in the future?

Thanks in advance.

-Mark

 

Wow... I haven't seen this thread in ages, and I started it.

JWT offers a swap out with a Cobra MAF www.jimwolftechnology.com but it requires getting the ECU reprorgramed I believe.

As for the filter, it all depends upon how generic. Though honestly I would go with the new AEM dry filter. It will save that oiling.

For cleaning them, if they had oil before, it is necessary to oil them afterwards.

 

where did u find a cai from warspeed i can only find it for jeeps

 

This is a really old thread, resurrected twice now...

Anyway, I doubt warpspeed even offers it anymore, but don't quote me on that. Do a search and you'll find that you can build a CAI yourself for much less $$$ and very little extra work.

 

wheres da best mount for a gab on a 93gxe if u know im thinkin about customizin a scoop or cowl but i havent seen one on a 3rd gen