Is there a loss in low end power using these compared to using the stock airbox?

 

I didn't notice a difference, but I didn't do a scientific A/B comparison, so I don't know.

 

I know there's a loss, but I dont notice it all.

 

i absolutely positively 100% guaran-damn tee that when you let off the gas at low speeds and try to speed up a little, youre not successful.. off the line if you stomp it the power i there, if you stomp it at any time the power is there... its when youre just trying to gain a little speed without pushing like 5k or so rpms

 

Even so, a small sacrifice low end power is made up by the nice sound generated by the intake IMO.
I bought my intake because i wanted the sound mostly.

 

maybe its different on a 5th gen but i doubt it would be.. it wasnt like a small loss for me, it was a decent amount

 

What's a "maxima"?

 

Felt like a slight loss to me but probably all mental.

 

everyone says u loose very little low end power but it sounds awesoem, so it evens out.

 

i'm highly confused about your question.

what is this "maxima" you all speak of?

 

 

I do agree that there is a little bit of low-end loss...

btw

 

hey, that's the 2nd time you used that

 

Good to see that you noticed. I've used this one before too.

 

WELL this "maxima" ??????

i like ur sig but i did not know ur car was that slow

 

i noticed a little loss in low end power on mine, but it also feels faster when i get on it. i really just wanted it for the sound. just like it says in DA-MAX's sig, "my car isn't that fast, but thanks to jwt it sure sounds fast"

 

No low end loss for me

It's all mental. I feel no loss, and it sounds nice.

Paramedic, did you start this thread b/c of my other post when I said "I didn't notice any low end loss" ?

..Oh, I'm soo flatered.

 

when you physically push on the gas and the car doesnt accelerate, thats not mental... if you didnt lose low end i have no idea why, did you buy your filter used? i know the more dirt on it the less air it gets in... also the stillen cone is bigger than the other cones out there, who knows

 

i have the stillen cone and it is proven that you lose low end torque and HPs below 2300RPMS, but as soon as you hit around that point the sound kicks in and you gain anywhere from 2-7 horses.. i hate the lag in first gear.. but there is nothing to be done.. we all no max's arent the cars that will accelerate real quick our best speed is at 30 and up..

 

There may be a loss in low end, but I would say it's hardly noticeable, if you can even detect it at all.

 

I still don't understand what you guys are talking about....this mythical loss of low end torque....I've seen dynos before and after the install of an SI or JWT and the bottom of the curve follows exactly until aroud 3000 rpms....there is NO REAL loss of low end. I've tested this myself by rolling at 5mph and about 1000 rpm with the clutch fully out (you guys say that my MT makes me not see the power loss....this is how I compensate) right were your supposed "power loss" is, and hit it....it breaks loose like nothing instantly at a little over 1000 rpms....before it would just grip and go. I've also driven my buddies 99 SE-L AUTO with just a popcharger...and it takes off better now than ever before. plenty of wheel spin.

JoesMAX - the thing about the dirty air filter isn't true either....K&N type oiled air filters flow BETTER when the get dirty....to a point of course.....the dirt actually helps the filter work. That's why K&N recommends only cleaning the filter every 50,000 miles....because most of the time it's pointless to clean it before that.

For all the non-believers- I will try to find that dyno chart of before and after popcharger.

 

like i said... if you take off its fine, its when youre just chillen at like 40 and you give it a little gas

 

my thoughts exactly.

 

heres what we can do... at the next meet, we have someone with an auto with a HAI and we test it out the way i said... do about 40 with a little gas, give it more and see if you can pick up speed a little without making the rpms jump... i guarantee it wont happen... it reminded me of my moms 97 4 cylinder accord... it was slow as hell and it would be the same thing, it wouldnt move at all till you stomped on it, but then it still barely moved unlike the max... good thing the lease was up and she got a 01 altima, keepin it in the nissan family!

 

I believe you've misunderstood K&N's marketing hype. They say it "works better" when its dirty. This could be true. The dirt in the filter will stop other dirt. But its does not flow better. That dirt blocks more dirt, but if it is blocking dirt, it can only be there to block air too. Th dirty filter does not flow more air, it stops more dirt.

 

it will be different on the 5th gen because they have that damn variable intake plenum.

 

Regardless, I don't think the "dirt" on the air filter has ANYTHING to do with it.

 

Why a loss in low end power with this mod???

 

I noticed a loss in low end power too. But after thinking about it... I think the reason why I thought I lost the power was because I expected a big power gain. And because I didn't get this power gain...I probably felt that it did decrease power or did nothing. This is only an excuse to make me feel that I didn't spend 100 for the JWT for nothing...hahaha

 

There are plenty of people on this board that went back to the stock box because of the power drop in the low-end. We can't call them liar's.

Medic, don't take this the wrong way but why did you post this?

 

i noticed a good 10% loss in low end and i got more than half that back with the CAI. i just had an idea when i was at the track, i took out my fog light because the CAI filter is right there. it was like a ram air scoop. that area is fairly enclosed, but what if i can a tube from the front valence to that open area to provide fresh, even colder, moving air. i'll let you know the results.

 

I heard that there was a loss in the low end, but I didn't notice one with my pop-charger, or even with my CAI. Oh well I am happy now. Love the sound, love the power.

 

Someone posted a thread stating that there was no performance loss in the HAI vs. stock in the low end. I wanted a poll to see if others agreed.

 

ok, there may be no actual low end power loss. No loss can be seen on a dyno plot. But, there may be a percieved loss. This would come from a reduction in throttle response due to the lower intake air velocity.

It may feel slightly sluggish, but under load, the power is still there.

 

BINGO.

 

Not to change the subject, but what about the loss felt with non-OEM spark plugs? I know that's not in my head. The Bosch +4's feel a little sluggish in the low end and more powerful up top. I remember BrianV saying the same for the plugs he used. I can't remember which type he used though.

 

The loss is so small. It is still worth it.

 

you should ask daniel b martin why at low rpms it is sluggish

 

I already mentioned why. Lower intake charge velocity. The big cone provides a much larger opening for the same amount of air to flow through. Same amount of air + larger opening = lower speed. This lower air speed doesnt fill the cylinders as well as a higher speed flow. This is mainly a problem at lower RPM and part throttle where the engine wouldnt be struggling against the OEM setup anyway. The effect is cancelled out at high RPM and high load by the sheer extra volume the big filter allows over OEM.