I installed my K&N fitler about 2 months ago, and i'm very pleased with the results.

With the OEM filter I noticed a lag in acceleration, with the K&N there is little or no lag at all! The car feels faster.

I also noticed an increase in mileage.

 

So its really all about the sound eh... but sadly, I would spend the dough for the sound.. lol I really would. Hearing a nice exhaust sounds just makes me appreciate my car even more... I know.. its bad.., but im sure there are many guys out there too who would do the same. lol

I saw some of the diagrams of the injen intakes.. where do the filters go?

 

if im interpreting the test results correctly the k+n improves flow by like .14% while sacrificing a slightly cleaner intake charge. in my opinion, and i have k+n installed, I will prolly go back to oems just to keep my engine cleaner inside. if ur looking for a deeper intake note the z-tube is the way to go.

 

So are you saying I will get the same sound increase wit the z tube without instaling the stillen intakes? And just keeping everything else stock?

I dont know what to do. Im so confused. I keep hearing differing arguments about this issue with dirt/oil build up with non stock setup's.. :S

 

just my opinion...
but it seems intake is pretty well designed and even aftermarket cai dont net much of a hp/tq gain. the ztube is an oem peice and is desgined for the vq.
so im sticking w/ stock air box, oem air filters (have k+n drop-in now), and z-tube.
to answer ur question, yes you will get sound increase with just z-tube.

 

Can I get this z-tube through the dealership?

Very interesting.. cuz if i do this instead, I wont have to worry about non OEM filters screwing up my engine and MAF.

Anyone have a link for the sound a z tube makes on the new G35's? Without any other aftermarket products.

 

z-tube is my only engine mod, also got tein s-techs.
i will try to get a clip loaded this week.
engine seems to open up at just over 2500, i really like the sound.
definatley noticeable difference from stock g35 air tube.
u can get the z-tube from stealerships or from 350z owners that go cai route.
check classifieds. got mine for $50 locally from 350z owner.

 

Wishful thinking. Even if the K&N filters gave you 5 additional HP, no human is sensitive enough to determine this small difference. The K&N's of course do not give you 5hp. All the aftermarket intakes available barely net you that. The Stillen short tubes net 6hp and long tube 10hp. I can assure you these are the manufacturers claims so they are exaggerated. K&N cannot beat physics. More airflow means less filtering.

 

ya I would definately love to hear a clip of your exhaust man! do it up! I'll be waiting for it! thx! =)

oh yeah btw, what car do u have?

and what brand is the z tube? is it stillen? or something else? sorry if that is a dumb question. lol

 

04 6mt coupe
the z-tube is an oem peice, a nissan part.
i have stock exhaust with z-tube and k+n drop in.
i got tues, wed, and thurs off so clip should be up by thurs.

 

Overall i feel K&N do make a good difference, i guess the vq-hr engine thirsts for more air. The engine "acquires" a new personality, more hyper, eager, exhaust more deep and humming which are all sweet. However K&N allows more flow yes but also more dirt... If you are going to own the car for 3 years then who cares and it all depends on personal taste and preference.

Btw imo the stock air filter isn't all that... I will buy fram brand when it becomes available.

 

I agree.

 

oh you have the coupe... yours already naturally sound awesome without any mods.. hmmm.. I wonder how much of that can translate to the sedan version. Since ours doesnt sound as nice as yours to begin with.

 

Imo the aftermart intake system with a cone type filter is bad. They suck in hot air and don't have a ram air effect. Can actually make the performance worse if not done right.

 

I really am considering the intakes.. im just concerned cuz.. I wanna keep my car for a long time. Im currently leasing it right now, but when 4 yrs are up, I wanna buy it back. So if doing this will remotely "damage" my car.. it almost doesnt make it worth it.

Hence, im liking the whole z-tube mod alone.. ahhhh.. what to do, what to do..