That is what mine sounded like. Extra airflow causes surge doncha know. :lol:

If this is true that AEM changed the elbow that they were supplying with intakes because they found out it causes compressor surge...then they should be offering up a new reinforced elbow free of charge to the people who got the BOGUS oringinal one.

From what I hear, they will be, but not yet. They are planning on offering customers a swap for a revised model, featuring both the reinforced elbow and venturi they are developing.

Ahh, see mine didn't do it like that when I had the issue, and neither did this other guy's car. It was a couple quick flutters. That actually sounds like the car is driving at idle LOL!

My bad :)

Wow, that sounds horrible! People always wonder whats wrong with my car because its so damn loud when I start it up... I would hate to hear what they say if it sounded like that.

I don't understand that.

Surge is typically caused by an airflow reversal or too much suction head (restrictive intake).

Sounds terrible doesn't it LOL? It is hella bad for the turbo as well.

Oh, I dont doubt that! lol!!

That would be great if they would do that...assuming they get it right this time. I'm sure the AEM CAI owners are very interested as to when this will be happening, because I def. am.

oh hell yeah If i can get my AEM working right then I would love to get it powder-coated and reinstalled.

Is there an ETA on when K&N will release an intake for the Cobalt tubro?

Any news on this guys? My next performance mod is the CAI but I want to be sure whatever I get works well nows and (maybe) after an aftermarket tune.
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Black 2010 SS/TC – GMS1, Hahn catted down pipe, Hahn catback exhaust | GM racing pedals | DEPO 4th gen projectors w/ 6K HIDs; smoked LED tails | Pioneer z110bt head unit, Alpine PDX-5 amp, Focal speakers all around
http://i1042.photobucket.com/albums/...e18/SigPic.jpg
http://www.cardomain.com/ride/3835837

Any of them will work with a tune.

Stick with Hahn (and dump that GMS1 for Trifecta tune)

Ok... great write-up.... great discussion with some helpful info - but... question:
I have the modded snorkel, k&n drop in, and AEM elbow. Do you think simply switching to a OEM filter will help? I don't have logs to know how much skew there is. It seems to run fine until it's super humid or raining. It just gets kind of boggy. As in... gas is down but the rpms just sit there and the exhaust has a low growl..No power.
It doesn't act all strange otherwise or during cold start. I know the AEM will be the first to get blamed but I personally VERY highly doubt that's it or it wouldn't discriminate on the weather.
From what I've gathered here the filter might be the biggest problem. I don't care about a few ponies if it will drive smooth.

just bought a dejon SRI.. and have a tune with vince through trifecta... previously had stock box with k&n intake modified... would you rec. me getting retuned for just the intake.. or say its not going to be much of a difference between that and the airbox mod w/ k&n... respond asap.. please!!

surge is caused by airflow reversal, when u shift gears and ur throttle body closes the air goes back into the turbo blades. bov or bpv opens to let off the air if there is something wrong with the bov or bpv u will get surge. so its not an intake issue, its a bov not opening properly issue.

Compressor surging?
 

Hm, odd that your compressor surges at start-up. My AEM intake just causes my turbo to spool up easier. When I start it up on a cold start I hear the turbo spool up and it stays spooled til I whip the gas, almost like a choke. One quick rev of the engine and its fine. But I do have the misfire everyone has been talking about from the relocated MAF sensor messing up the fuel trims at idle, especially with the A/C on. Worst problem I've had has been the rain. If it rains a hell of a lot where you live, like 2-3 inches of rain on the roads, don't get a true CAI. You'll miss like crazy for a while because of the water coming through the bumper and fender.

If this is true you are the only one I have ever heard of who has not experienced cold start compressor surge issues with the AEM intake (either version). I have a way to tune it out now by changing the cat heating cam tables for idle. :)

i cant seem to find any info on installing the dejon intake pipe.. theres 3 "hose" connections on my pipe. one huge one and two smaller ones.. can anyone tell me what those go to? Ive had plenty of installs in my past time.. but havent installed one on my balt yet.. so im a little confused.. so much for a bolt on kit.. my stock only has 1 hose connection.. so if you know anything please hook me up. thanks!

Sounds like it has a connection for a BOV recirculate tube. If you do not have a BOV then you would have to cap that one off. It is ~1 1/4" diameter.

hmm
 

so i block off the big one, and the one next to that.. and just use the one with metal connector?

aside from that i have the ic piping coldside.. whats a good gasket to use for that sensor.. silicone or gasket maker

good thread

Can you post up a picture of the intake I am not sure why it would have 3 hose connections on it. It should have a BOV recirc line and a PCV line.

now will this hahn intake suck up water wial driving since its like a fender wall

Yep, water comes in above the pass side fog light and by the headlight and soaks it in a downpour while driving.

hmm
 

how do i go about uploading pics... ;)

You have to host the images in imageshack or photobucket. Then you copy the link into the insert image.

Do you tune TBSS'? :lol: My mother just picked one of these monsters up. :)

I can tune them. It is an LS2 like a GTO. You still thinking about tuning your car?

Yes. Exactly. It's a 2006 TBSS RWD. It has the LS2 with the Automatic Transmission. I think it's the 4L70E. And yes I am still thinking about you tuning my car. I would LOVE it RIGHT NOW, but I need to stay away from speed. So maybe I will be contacting you later this month, to see if you could tune both.... ;) But I would love for you to tune my car!

You just have to do what I do, hit it hard for a couple seconds then let off so you are not doing 100 before you know it LOL.

:lol:! Yes. I need to learn control over the throttle... It's very difficult for me not to hit it everywhere I go. But I think I am learning. :)

lol so y would u buy this intake?

None of us knew it until we bought the intake. So far no water issue with my AEM even when running down flooded roads. It rains almost everyday here in Florida.

My SRI without any shielding will get wet also if it rains hard enough at freeway speeds.

Air flow simulation video of the MAF screen effect
 

I found this great flow simulation video on YouTube of the difference a MAF screen makes. Somebody could make some money I think if they sold a drop-in MAF screen solution for the intakes available for our car!

Don't freak out about the colours, the important thing to watch for is consistent flow across the sensor.

With a screen, notice how the flow is consistent across the MAF sensor, turbulence is filtered out and a steady signal and flow is acheived. This is what the sensor expects to see. :twothumbs

YouTube - Flow Illustrator MAF with Screen

Without a screen, looks okay at first but then WHOA! A huge turbulence wave blasts across the sensor! The MAF would read this as a spike in the signal and try to react even though really there is no change in the average flow through the intake. Result could be hesitation and a messed up AF ratio.

YouTube - Flow Illustrator MAF

Reply to those regarding SRI by Dejon. Good results after 20 minute install-awaiting tune until I buy a charge piping set.

No surge issues that I can tell. No computer generated error lights. I did simply move the filter as far forward as it went and ended the turbulence. Oh, and I am happy with the powdercoat.

so has the k&n been reviewed?

This