flashover

Ok, i have the Stillen Hi-flow. Love the sound and it seems to help at top end. I have hacked air boxes before, but i am mainly interested in performance.
Any comments, especially dynos, would be great.

BOSS

this has been said millions of times and goes something like this:

"either one will yield 1 hp if you're lucky"

CullenJ76

iTrader: (3)

what ever happened to the "mother of all intake threads" thread?

That would be good to add to the FAQ if it could be dug up.

MyMaxRocks96

Put me up in the hacked box column.

Nick

5Zpeed

Is this really true? Because Stillen claims of 5 HP gains with it's cone filter and velocity stack.

Bobo

What advanages, other than noise which I consider to be a disadvantage, is there from going with a hacked airbox and a K&N panel air filter vs no hacked airbox and K&N panel air filter?

I am not interested in hacking my airbox if all it does is give me more noise and no improvement in performance.

MyMaxRocks96

Well be sides the extra sound, which sounds really good IMO, I do feel some improvement. Smoother throughout the RPMs, and especially noticeable in the low end.

Nick

Maxima99SE

iTrader: (2)

I have hacked airbox w/ fram AirHog panel filter.. gives a nice sound, but as far as gains are concerned... i dunno. if there are any gains at all, it's not noticeable.. I think the improvement youre feeling is in your head...

RamboMax

I just did the hacked airbox mod yesterday the sound it's bad at all. I didn't cut the whole thing out, but about 3/4 of it. It felt a bit stronger when pulling past 3k rpm. I also cleaned the throttle body before doing the mod. This could be why my car pulls a little stronger and revs quicker. The sound is hardly noticeable under normal acceleration, when you step on it there is a mild growl coming from the airbox. I guess if I cut the whole thing out the growl will get noticeably louder. I'm still testing the setup to see if I like it. If not I will buy some fiberglass patch and fill the hole.

MomoMax98

i got an Injen CAI and i felt gains right after i installed it...i dont know what you guys are saying that yall didnt feel any thing...stop being cheap and buy some parts

Toolrocks

iTrader: (1)

I've never seen the hacked air box for myself but I had my car dynoed with the stock intake and the Stillen velocity stack. The Stillen made more power throughout the entire RPM band with the biggest improvements above 4500 rpm. I don't have my dyno slip anymore but the improvement looked to come from a better a/f mixture with the Stillen. I think most people agree that a hybrid is the best intake - pop charger (anyones make) and then replace the mid-pipe (part after MAF before the throttle body). Good luck.

CullenJ76

iTrader: (3)

To add up all the money I've spent on my car I would need the following:

-calculator
-people to remind me of all the parts that I forgot about
-a LARGE bowl to vomit in after I realize how much the total is

Friend of mine on here dyno'd his car and gained IIRC 3 peak hp, but lost in some areas so...

I speak from experience having had every intake you can think of on the fourth gen. It's a waste of money pretty much hp/dollar wise. It really just depends on what you want. If you are expecting actual power gains, then it's out of the picture, but if you just want a little growl(we all do deep down ) and to satisfy the VERY accurate butt dyno it's great.

MaxxAddict

Correct me if I am wrong, but isn't a stillen velocity stack a Short Ram intake? (They just use fancy wording). I purchased a short ram intake off ebay, and if I were to replace the cheap ebay cone filter with a K&N, wouldn't I be accomplishing the same thing that stillen is marketing?

Nismo

iTrader: (18)

not exactly, Stillens velocity stack is a large cone shaped funnel that mates the intake filter to the MAF smothening airflow and reduve turbulance. Most other short ram intakes just have a filter stuck to an adapter and usually have a flat "wall" where air has to go around to enter the MAF. Im not shure how much difference it actually makes but the idea makes sense

Toolrocks

iTrader: (1)

MaxxAddict The velocity stack does work to help smooth and speed up air across the MAF sensor. The Stillen and JWT both have a velocity stack that their respective filters attach to. It's not a fancy name, there is actually a working velocity stack.

flashover

yes, but i really want to see those flow tests on the velocity stacks... Just to see that they are better.

Shift_Power

So for sound purposes - go with PR style CAI or HAI?? I also want performance but I'll get that elsewhere. I don't want to lose performance though - will either hurt me? I've heard a few people who say stock airbox is better than intake which means intake is hurting them.

Nismo

iTrader: (18)

If your unshure then buy a CAI because if you get a CAI, you get both a CAI and HAI since you can just remove the lower cai pipe and it converts it into a short ram HAI. Its like buying 2 intake setups in 1 kit.