My previous setup was the upper PR tube from the cai attached to a Apexi filter. With this setup I was able to go well past 130+ and it will still pull. Now that I've driven with the Injen Cai setup for about 2K+ miles, I'm sure that has been enough time for the ecu to learn. I noticed that there is a bog once I hit 120mph. And it's take forever to climb up. I guess this is because of the piping of the Injen? Since it's longer it can't suck the air as hard as a hybrid setup would at high speeds/rpms..

Does anyone else think the same?

 

Yep it's possible, the path of air is longer this time around and that long pipe acts as a hindrance. It's like sucking air through a straw.

This is why a lot of people say HAI/Hybrid for better top-end while a CAI is for better low-end grunt.

 

if you look in the track forum there is alot of talk about this.

I just switched from my PR CAI to Hybrid to see what the differences are.

I have only been on the HAI for 2 days


BTW soundmike, I am NOT stalking you

 

It never ocurred to me, but now that you mention it

 

 

 

Do you have the Apexi filter on the INJEN? If so, does it fit perfectly? Thanks.

!!!WE NEED TO HAVE AN INTAKE DYNO SHOOTOUT!!!

 

What if you put a bigger filter on the injen?
That should suck more air at high end.

 

I've read of 400+whp turbocharged IS300s using the same filter, so I doubt it's the filter.

It's the tubing size/length or it's all in his head.

 

I noticed it too as soon as I hit 120 mph and had no more top end
I was going against a Lexus GS300

 

Where are you at in your RPMs?

If it's truely restrictive, you will hit the same "dead spot" in ANY gear at the same RPMs. However, it's probably more noticeable in 5th gear(6th gear?).

 

I don't remember where my rpms were. I was in 6th gear at 120, maybe next time I'll downshift.

 

Dave check your email

 

mike, check your email

 

wont a 6spd car go faster in 5th rather than in 6th.... i may just be thinking off my head but i do remember reading somthing about the 6spd mustang cobraR top speed was 158 in 5th gear....

 

I know a lot of you CAI lovers wil flame me, but at high speeds I think a Frankencar, or Full Berk intake will be superior. There is so much air rushing into the motor, your CAI is useless. All those bends in it cause a restriction of airflow. This makes the straight design of the Berk and Frankencar superior and more effective at highway speeds...... I have driven several Maximas with CAI's....

 

I agree as well, at high speeds my car pulls like crazy.

 

I have a CAI on my 2k2 6 speed and I didn't have too much problem at high speeds. I won't go into the scientifics of which is better because I'm a college dropoutand wouldn't know, but I was going 140, and I still had some pull I was just running out of road. You do have to stay in 5th gear as it has a better ratio than 6th does for that kind of driveing. I wouldn't give up the low end for anything, my favorite is playing with a probe or cavalier, cruising with him in second gear until I hit 4-5000 rpm's then just taking off and letting him check out my painted rear sway bar.

Anyone out there run a 6 speed 2k2 without CAI, what kind of top speeds are you hitting? I'd probably switch back to non-CAI just to hit a new top speed.

Robert

 

I still have a feeling if you use the same size filter as the berk or franken, the injen will pull
like those intakes at high speeds.
Thats what I plan on doing once I get the injen, I will let you guys know

 

Their all cone filters in essence.. I think it's really the long tubing of the Injen that hurts our topend...

 

It's simple physics and yes it is the long tube.

Again think of a straw, get a really long one and a big bottle of soda or something. All the while, time yourself and the volume of liquid you can move in xx seconds.

Now try sucking slowly, no problem right? Now try sucking a little harder. There's a threshold as to how fast you can suck the soda from the bottle into your mouth. Sooner or later you'll feel the pressure in your head. Why? Because you're trying so hard yet only so much soda is going up the tube.

Now do the same experiment using 1/3 the length of the straw. You'll be able to move much more volume that way with less the effort.

 

I don't really care cause I don't drive 120-140 mph anyways! Where are you guys driving the Salt Flats?

 

Incidentally enough, i never thought i'd reach 120mph in normal highways.

But the Max accelerates pretty fast that when i'm going 80 (highway speeds) and need to overtake someone 120 can come pretty quickly.

 

I understand what youre saying, but then there is the element of the opening at the end of these tubes. A bigger filter naturaly will allow more air to be sucked in.
So what Im saying is a longer bent tube will restrict flow but so will the size of the filter. Put larger filter instead of the 3" that comes with the injen and you should be pulling a little harder at high end.

 

I hit 120 everyday I goto work in the morning on I95... That's why I love driving in early in the morning..

 

I will stick with my Stillen Intake if this is the case... . . . . .

 

That's true, but comparing a CAI and HAI with the same filter you'll still get better response on the higher rpm band with the HAI.

 

Ohh, any side street.

If you recognize the source of that line, PM me ;-)

 

Are you looking to sell the PR/Apexi setup?

 

I actually plan on putting back in the PR/Apexi HAI Hybrid.. So I'm probably gonna sell the Injen.. Anyone interested?

 

I actually plan on putting back in the PR/Apexi HAI Hybrid.. So I'm probably gonna sell the Injen.. Anyone interested?

 

I actually plan on putting back in the PR/Apexi HAI Hybrid.. So I'm probably gonna sell the Injen.. Anyone interested?

 

PM me a price. I have a 2000 SE.

 

Notice how I have stuck with my Franken - Berk Combo... I refuse to pay $300 for a BS CAI !

BTW, Soundmike has the exact concept. If you look at most sports cars with excellent intakes, Camaro SS etc... they feed the air DIRECTLY into the upper intake. No one uses excessive bends , because , while that might give you a colder air source, it also creates a longer path , to suck the air THROUGH.... Buy what you think is best for you. Just dont overpay for an useless mod...