I figured that tons of people would be making posts about their K&N intakes so I figured that we could all just post them here.

Took me around an hour and a half. I used K&N's hardware but I still got a CEL.... Hopefully the cel will go away.








Thanks Modern Performance!!!

 

hah! I just installed mine today. No Code I am happy. It took me two hours because I didn't know where the hell the other two screws were for the airbox.

Did you use e-jack in the trunk to lift the car?

Nevermind I see you used something else..

 

does that filter cover keep away water and dirt particles or jus dirt.....jw thanks

 

I believe just dirt.. U need a bypass valve for water

 

Just got my K&N today too. Tore open the box and got to installing.

Took me about an hour to do it. As for the CEL people need to know if you unplug your battery during the install like K&N recommends it causes a P0603 code which is a PCM memory reset. It will go away in a few cycles of on and off. I got the P0603 and cleared it with my scanner. Took it for a ride and no CEL's yet. I will have some pictures too.

So what do I think? Well it's a pain in the ass to get that intake tube fed up through the fender well, take your time and dont scratch it. I think it sounds and looks awesome. Definetly glad I picked one up.

As for extra power, I just popped on a 3 inch pulley the night, so I can't really tell if it feels any faster.

So what else, well I can tell you the new intake tube is gonna make getting to the PCM and related connectors a pain in the butt. As you can see in my picture under the hood is riddled with DTEC-FC wires.

Oh also I measured the tube, it's 3 inches at the filter end and 2.75 at the throttle body end.

Thanx to Modern Performance! They got it to me just in time for the weekend

Now for the pictures.

First up a shot of the installed intake from the fender well.


Close up of the MAF and Filter w/ Dry Charger


Opening throught the fender well.


Intake from the top


Good bye ugly air box.


Look at the kink in the stock tube

 

whats up with the wire bird nest under your hood?
i like your car where did u get the OBD scan gauge from

 

Zinner installed the TurboXs DTEC-FC, which is a fuel management system... i think



Nice pics Zinner. I've seen about 4-5 people already with the K&N. Now we'll soon see the long effects when people have to "re-charge" their K&N filter and see the people who put too much oil on which will probably throw a code. Obviously from the factory everyone has been satisfied and no CEL. WooHoo!! Now the debate between Fujita vs. K&N... who will win

 

congrats to the both of you for your new mod.

 

I am starting a wild life refuge.

Nah it's the DTEC-FC wires it modifies the MAF signal and with the fuel defender option the MAP singal (which I should have in a few days). Luckily the TurboXS folks are about 10 minutes from my house. We just got the MAF offset computer working and we are working on the fuel defender next.

www.turboxs.com

As for the scanner, I have an Autotap USB for my laptop and I have the Aeroforcetech Interceptor Scan gauge.

 

Zinner thanks for the good pics !

 

:-) The CEL went off.

 

what is that cover on the airfilter its self, does that stay on?

 

It's not perminant, you can take it off, it's a drycharger, helps keep the filter dry

 

Have you guys noticed an improvement in the car as far as performance goes and do you hear the supercharger better?

Tom

 

The supercharger is so much louder.

Also this is the first car I have owned in which installing an intake actually makes a noticable difference in power.

Although my check engine light just came back on.....

 

No CEL for me yet. Knock on wood.

 

What is with the Cobalt's ECU being so sensitive to mods?? Seems like no matter what mod people do at least a few get a CEL, seems like the sensors are programmed with very limited "normal" parameters.

Anyone know what specifically is causing the CEL with the intake mods?? Only thing I can think of is the MAF is getting CFM readings that are above normal (from the increased air flow), which would cause the CEL to come on. The system seems overly sensitive to mods for some reason

 

I think you may be on to something, because this also has me thinking. Today I was discussing with another Tech. and we came up with this theory:
So many CEL's setting after intake mods; CAI, Airbox mod, Filter swap, all change the way air enters the engine. If you free-up any restiction in the air stream, such as the filter, the airboxes opening or the diameter of the intake tube, you are changing the velocity of the air flow. The engine is only going to draw in what it needs, how easily it can ingest that air charge is what will make the increase in power.
If the PCM is programmed with tight tolerances, this may be the case. With the factory intake set-up, the PCM is calibrated to expect a given gm/s,(Grams per Second like CFM), at specific driving conditions like, 3.00 gm/s @ idle, the plus or minus from that value is were we may have the problem. ( This could be for cruise, part throttle, heavy accel. etc.). In a CAI we have an increase in tube diameter, this will allow air to enter with less restriction, thus slowing the velocity. The MAF will measure this as less air entering the engine, when in fact, it is still the same. MAF measures density not the volume. If the PCM is only programmed to deviate +/- .1 @ idle and you are at 2.80 gm/s, this will set a p0171 lean.
This is only a Theory I have come up with. It is not written in stone, I am just trying to come up with a solution for this problem. If someone would like to add, please feel free.

 

Thats where the DTEC-FC enters and you mod your MAF signal

 

ok well ive done the "Airbox Mod" for the time being until i decide what CAI to get, id imagine the difference wont be that much but....As far as my difference is concerned my blower is way louder and it appears that my throttle is alot touchier? how is that? could the TPS be affected (i doubt this but...) also my boost guage touches 95kpa CEL light is intermittant on and off on and off...sometimes goes days without coming on then BOOM its back on..(less frequant than before) so i guess its getting "better"...anyways good luck with all your new mods and cant wait to get these puppies "Staged"......


OH BTW.....Called onstar code is for "To lean of a mixture" fuel system PCM code...
damn touchy mafs....NEED ECU UPGRADE NOW...!!!


___________________


05 Black SS - Red Inserts
**AIRBOX MOD**

 

Well I have got the Fujita intake and my velocity was 2.64gm/s...which is why I am setting a P0171 lean code. Hey NJBLUESS do you guys think you are going too have a fix for this from GM???? I would like too get ride of that anoying CEL....

 

That could be because you have the DTEC-FC



Now a question I have........ Anyone with the PSI-FI Kit running a K&N Typhoon setup? And if you are... Are you getting a CEL?

 

Man I reset my battery again just to clear the CEL I got again, and after the normal battery reset CEL time period passed, the CEL stayed on.

I just got back from driving 25 minutes on i-95. When I got home, I popped my hood and touched the intake tube.... It was ICE COLD. I also touched the supercharger where the coupler goes on for the intake, ice cold as well.

I just wish my cel went away. I think GM is going to regret making this cars monitioring system so sensitive, nobody will want to buy them due to the mod unfriendlyness of the car.

 

Has anyone put on the psi-fi kit and then went to get a dyno to see if it really gives 45 whp??? Or at least can feel a big difference?

 

I have no control of any thing GM does, I'm just a Tech. But I can say this, if my my theory is correct, GM did this for a reason. They had to work with-in limits in order to meet standards such as C.A.R.B, Fed. emission standards, fuel milage standards, etc. They needed to design the vehicle to last its warranty coverage. Believe me they would rather you stay out from under the hood. So chances are slim they will come out with a fix for a problem the did not cause. In other works we need to find the way around them. Zinner may have the answer.