X-1 Intake

[FunkWeasel]

On the filters: I'm not a fan of the ITG any longer. I've had a couple that debonded from the base plate, and I've seen some maf readings generally degrade over time. I've never seen a maf fail, but they seem to read lower and lower with oiled filters. The AEM has a rigid plastic structure inside so it *can't* collapse, a cast in bellmouth with a step to accomodate the maf piping without turbulence, and it has no oiling. The sheer size of it makes me happy as well, particularly for the ginormous turbo cars coming out now.

The ypipe is sort of a hybrid. Its based on the rs4, but Jon and I shaped it down to taper into just small enough to stretch the stock bpv elbows over it. You won't have to buy the $400 rs4 ones with it and its still larger than any current turbo inlets including ASP's gt28 ones. It won't conduct heat as much as the aluminum rs4 one, you save about 10oz of weight! ;-), and the pcv is relocated down and out of the way. fwiw it has smoother transitions inside than the rs4 one, but that is not nearly a measurable effect.

[Militant-Grunt]

*innocent whistling*



Worth every penny. Im planning on getting a S4 in the next few months, there is talk of making a carbonio work with a 2.7t?

[FunkWeasel]

Yeah you can make the carbonio work somehow(someone on AW) did it, so I'd search there. The main problem I see though is that the airflow is limited to coming in through the one intake spot on the core support. The way the intake is setup in the X1 case is the snorkel, the radiator bypass hole just under it, around the light (top and bottom by removing the weatherstripping above the headlight on the core support) and from the lower fenderwell area.

Still if you want to borrow a dwyer gage for some pressure drop tests on it that would be kickass! Throw a thermocouple in there too. Those really are very pretty and well made for sure.

[HighDesertAudi]

Good call going with the AEM Dryflow, no more ruined MAFs from the oil.

Have you guys thought of making some sort of Headlight intake for track days?

[FunkWeasel]

Heh its funny, the first headlight intake was made by Piggie off of a set of lexan covers I made for him. ;-) I thought about it, but I'm not sure the market is there to make it worthwhile. If I get some inquiries though maybe I'll get around to it. But for true track days you could always just take it out and it'd be just as good if not better.

Hmmm....might be worth making sure the pressure doesn't get too high though.

I'd probably suggest modding a light housing to remove the hid lamp so you can still easily flash people for the point by, and for the street remove the high beam. Not sure how many of you have several spare light housings though.

[AB18]

What im wondering is..what are the hp gains here?. I would be interested, but im not paying 500 for a some carbon fiber. Only way id pick one up is if i was going to gain something over my k&n drop in, and holes.

[10SecS4]

Heh its funny, the first headlight intake was made by Piggie off of a set of lexan covers I made for him. ;-) I thought about it, but I'm not sure the market is there to make it worthwhile. If I get some inquiries though maybe I'll get around to it. But for true track days you could always just take it out and it'd be just as good if not better.

Hmmm....might be worth making sure the pressure doesn't get too high though.

I'd probably suggest modding a light housing to remove the hid lamp so you can still easily flash people for the point by, and for the street remove the high beam. Not sure how many of you have several spare light housings though.

I've done a ton of back to back runs with my ramair headlight in and out and have seen no gains whatsoever. In fact, I ran my quickest ETs and fastest traps with the headlight in and no ramair.

[FunkWeasel]

Marc is that with the stock box in? Makes sense in that case.

AB18, its hard to say since it depends on you post-install tweaking your tuning. Some code needs certain things, some doesn't. On APR and one ASP car I've seen 0.1-0.2sec decreases in FATS times (Marc same stretch of road, almost same temps) with very little tweaking and on 91oct. Its *impossible* to test on a dyno.

[sookiS4]

thanks again funk. the x-1 is working great
gt25r all the way!

[10SecS4]

No, it was with this airbox:

[FunkWeasel]

Its already got an intake ram then, why take the light out? iirc Blitz had two feeds: one through the ramlight thing, and that lower ram tube? The pressures on each are gonna be different and you'll just develop the pressure of whichever is lowest or an average at best.

btw what filter did they run in that thing??

[FunkWeasel]

Yeah thanks for those pics sooki! Your car is really, really nicely set up.

[esss_pho]

in for carbon y pipe...what can i say i love it

[10SecS4]

Its already got an intake ram then, why take the light out? iirc Blitz had two feeds: one through the ramlight thing, and that lower ram tube? The pressures on each are gonna be different and you'll just develop the pressure of whichever is lowest or an average at best.

btw what filter did they run in that thing??

I actually tried blocking off the lower snorkel and using just the "ramair" dummy headlight. Didn't seem to make much of a difference one way or the other.

I'm running the same ITG filter that Ant ran back in the day. What kind of gains do you think I'd see from swapping it out for a bigger AEM or K&N cone? Anthony was limited by the size of the filter he could fit inside the sheetmetal airbox, but I no longer have that problem.

[FunkWeasel]

Heh, you went at that like a madman!! Dunno what you'll see in terms of gains without tweaking, but you'll likely see it run harder up top. I can't believe you didn't collapse that smaller ITG as some people with the awe s3s have.

Spend some time with Lemmiwinks after you do it.

[10SecS4]

Specifically, what kind of adaptive channel tweaks might one expect to need to make after upgrading to a massive K&N or AEM cone filter?

I wouldn't be surprised if the ITG filter were collapsing under WOT. It was always inside the airbox, so I was never able to monitor it on the dyno...

[FunkWeasel]

Primary fuel for the most part. The other stuff will take care of itself. Use a wideband though to be sure. You'll also have to do it on the street and not a dyno since the conditions will be so different.

[10SecS4]

With the bigger filter, I'm assuming you'll have to add a little primary fuel right? I think this might work out well for me then since my car is a little bit on the rich side right now.

What are the specs on the AEM filter you're using in the X-1?

[FunkWeasel]

The big AEM is the 3.5"IDx9" long dryflow. Summit has them pretty cheap.

Its hard to say on the fueling since you have an odd step in front of the maf. Different lengths of tubing pre-maf will change the signal quite a bit even without a step (longer=more laminar flow=lower g/s, roughly).

One thing I'm concerned about with your new setup is whether that is a high pressure region any longer. Since you have an fmic you have some options. Take a stock IC duct on that side(make it fit somehow tightly to the rieger/siedl/whatever that is) and put it on. Then build a plastic duct of ~ the same outlet size as the IC duct and run it up to your top piece there. Hell duct tape, epoxy, plastic weld the whole system tight. Then seal that monstrosity to the bottom of that top piece with some rubber weatherstripping(so you can still use the bolt holes and take it out easily). If you also use some plastic to extend the outside edge of the bumper IC inlet out a couple inches you'll pick up some pressure too. If its thin and black it won't stand out or be ugly.