theres a metal clip that holds the cotton and wire filter part of the cone together into its shape. I use that as the hour hand.

I've been trying different things since that discovery of the most stable position being near 12:00.

I rotated it completely around (6:00) and I get extremes in STFTs. At partial throttle it spikes in the positive direction to something like +9.0 to +12.0. At cruise, it spikes to -8.0 to -6.0

The funny thing is they balance out depending on your driving to a LTFT of -1.5 to +3.2

I still feel having the bulge of the filter pointing upwards is better since I have yet to hit past 10.0 in the + or - direction. I wanna try a 9:00 position next to see what happens in this cold weather.

Its 32 to 35 degree F in the morning here in Maryland just for reference. Temperature is playing a role on the fuel trims.

 

yup, you do not want the filter buldge facing down (K&N logo will be right side up in this conformation), fuel trims are bad. Partial accel exceeds +8%

You want the filter buldge facing upwards in the 12:00 direction (K&N logo will be upside down), fuel trims are very managable, leaning slightly in the negative direction. Partial acceleration rarely exceeds +6%

These are my experiences and should only be used for interpretation not definitive results for all Cobalt SS as each car maybe be slightly different.

 

How do you all know it's the way the filter I positioned instead of maybe a difference in how the intake tubing is positioned? I know there's not a whole lot of different ways to position the piping but maybe slight differences in position might be causing these issues.

 

Now that its cold my trims are horrible.. If I put it at 12 o'clock ltft will go past + 10 + I can't get a negative trim no matter where it's positioned. I'm parking the car anyways for the winter and getting a custom tune for spring.

 

weird mine got WAY better with it cold. stays under/over +-3

 

same here. my Trims got better and are right where Northvibe said.

 

The MAF in the pipe does not change location, there is little to no room to move the pipe since its all one solid piece fitted right up to the turbo inlet. There is 100% definate change with filter rotation. Anyone with any sort of fuel trim reading device. I challenge you to rotate the filter 45 degrees or more away from where ever you have it and see if you get a change in LTFT. I saw it immediately when rotating it 180 degrees.

 

I also have Superchip tune my trims were always + could never get - I seen 1.6 to 3.3 most of the summer. My trims are great at steady throttle its when i beat on the car it will climb a bit but like i said gonna tune it anyways.

 

figured I'd finally post this.




It was raining alot today, in this photo you can see water drops on the metal heat shield but the filter was 100% dry!!! very good.




BUYHIDs.com's projector kit just for fun

 

BooYeah!!!!!

Just got one of these intakes from TTR for a smoking deal way better than ZZP's and OTTP's prices.

Turbo Tech Racing Rules


Now I'm going to have to sit the intake on my coffee table and just look at it until winter passes by and I can install it and have the car re tuned

 

i could never get my fuel trims down i was sitting around 6 no matter where my filter was postioned!

 

+6 is pretty normal because all 4 K&N SRI cars I have tuned so far all ended up needing +5 to +7 changes to most areas of the MAF tables. They all started off at +2 to +3 LTFT and then as you start adjusting once you get done they end up at +6 to +7 changes mostly.

 

yeah i took it off for now though didnt know how bad it was to be driving around with the +6

 

The K&N is honetly not that bad because for the most part it does not cause a ton of MAF turbulance especially for a short ram intake (A/F does not hunt much unless the stupid purge system is active). It still should be tuned for for optimum performance, drivability and durability.

 

Thanks!

 

So now that I'm ZZP tuned do you guys recommend I get this?

And I don't have a RPD unit either so how will I know my what it's doing to my engine?

Also what is an acceptable range for intakes

 

Not really. You need to be tuned with the intake in mind for best/safest results (though your car will try to compensate with fuel trims as best as it can).

You won't know what it's doing unless you have either a gauge (Dashdaq, Dashhawk, Interceptor, RPD, etc.) or logging done.

The acceptable range is as close to 0 at all times as possible. The closer, the better. There's not really any other good way to address the question.

 

im sure its been said like 25 times but im not searching through this haha. so its basically a no go without a tune? i know without a tune i wont get the full potential out of it but i plan on putting it on and getting a tune in a few months. safe or no?

 

Yes, its safe

 

9 times out of 10 an intake is safe without a tune. The tune allows you to take full advantage of the intake however.

 

Yep ... like the guys above said, its safe. It's nice to have something that can read the fuel trims , IIRC you can kinda tweak the K&N to give you better trim's by rotating the filter a certain way . If the fuel trims get too bad it will set a code ( + or- 20 long term ) so atleast you will know instead of running around with the trims way out of wack.

 

Nice, so since it's okay with stock, I guess I can assume it'll be good with ZZP Tune. Especially since ZZP recommends AEM CAI and Downpipe with the tune

 

a canned tune? eh.. every car and intake will act differently. You'll want to find someone that can street tune you or tell zzp what parts you have before sending a tune out.

 

Well, I'll get it and I guess if I need to get it retuned I'll just do it, I'll have to send in the PCM back to ZZP and have them reflash it to support the intake.

 

or you buy it here, SALE! K&N Typhoon Intake System 2008-2010 Cobalt 2.0L (Factory Turbo) - Air Management - Turbo Tech Racing, LLC

and save money and get your own cleaning kit lol