So before everyone starts jumping down my throat about the search button and turned out empty handed. Ive searched and searched about some of the other intakes having slight BPV flutter sometimes. So the only question I have is, Has anyone ran into flutter issues with the k-n typhoon intake? Im just curious because I have one en-route to my house right now. My car is stock other then injen CP and GMS1.

 

I haven't heard of any issues with the K&N only with the old style AEM CAI's.

 

theres some intake threads...but ya no issue here or that I've heard of.

 

it's pretty much been determined that if you have flutter after purchasing an intake, more than likely you had it before, it's just louder now. Usually it's linked with improperly installed GMS1 sensors, so I would first check all the wiring there. Then pull out the BPV and check for tears.

Edit, just read that you haven't installed it yet, so if you get any issues, this is what I would check.

 

I have fluttering with my k&n but I had it before with my stock airbox aswell, it's just more pronounced with the k&n

 

ive had the k&n for about a week now. no problems with flutter, only sound is the sound that the bpv makes when the turbo starts spooling. sounds sick. enjoy my friend!

 

when you get this installed, are you planning on dyno'ing it? if so, I'd like to know what kind of numbers you are putting up, also what kind of mileage increase or decrease you're seeing... I'm not sure if I plan on doing a CP or not, seems a decent amount of people were'nt seeing a ton of gains out of them ... but anyway would love to hear some of your results!

 

For 67389th time if you have GMS1 an intake will not gain you any power all you will be doing is skewing your fuel trims and gaining a "cooler" sound. And CP's sure as **** don't add you any power.

 

you'll have to explain this a bit.. if by trimming fuel curves nets a resultant 20HP and 40lbs of Torque (as the GM test Dyno Curve seems to suggest)... how is this not gaining any power? ... not trying to be combative here.. just looking to understand what one would need to do to actually Gain power.. with whatever power here is .... Thanks!

 

The ecm is a control freak, if it senses more airflow through the maf due to a more efficient part being installed it'll simply lower the boost to offset the gains. If you want to make any worthwhile gains you have to edit the ecm parameters either with hptuners or an aftermarket tune.

 

So then why Does GM show a Dyno with increased HP and TQ? : Cobalt, Solstice, HHR Stage Kit 19212670 - Crate Engine Depot


I don't get it... what is basically being said is... its pointless to get a GMS1 and the numbers they put up are false? the ECM as far as I understand it.. does in part control the boost... part of the learn down that apparently is not FULLY removed but MOSTLY removed since it wont allow the turbo to overspeed and save its life.

per this article: GMTunerSource.com - Lunchtime Answers with GM HPVO

I dont know I guess maybe I am missing something here or whatever, but any numbers above stock seem to me to be a gain... or at LEAST recovery of lost HP through the system... which to me is a gain as well.

 

They gave the answer in your link:

Q. As some have been in search for.. is the "learn down" feature really "completely" removed? Or, has the levels been moved higher to allow for an increase in hp/tq? Some are finding that after the GMPP Stage I kit and have added other aftermarket bolt-ons that the increases in power are not entirely there. Looking forward to Stage II. I am in hope for a Stage III. Which would be a fullout race stage and would probably not covered under warrenty. SS/SC's have the option, what about the LNF SS/TC?

A. The learn-down feature is totally turned off in the stage 1 tune. However, the turbo overspeed safeties are still turned on. This is calculating what the turbine speed and will not allow the turbo to exceed the manufacturers declared maximum turbine speed. The tune will do “whatever it take” to ensure the turbos safety.


Also, on another note, it has been my experience that if you purchased multiple bolt-ons each claiming HP gains, the total hp gain never adds up to the sum of all the claimed hp gains by the various component manufacturers.

 

Right this part I get about the learn down.. I say MOSTLY removed because of the residule safties left behind for the Turbo's sake... but yes its is REMOVED... but I'm still having a hard time understanding how the GMS1 DOESNT give me an increase in HP?

 

Do you have a dejon bpv spring?

 

The gm kit obviously does increase hp, think me and tom.g were originally talking mostly about the additional intake not giving a hp increase. While a lot of sites say that the learn down feature is disabled, can't say i ever saw anyone prove it with any actual facts or data.

 

BACK ON TOPIC - I recently installed the K&N Intake. I'm not experiencing these issues but I believe that if you are experiencing any flutter that it's probably always been there. With the new intake and how much it increases the sound of the BPV you probably hear it now when you couldn't before.

 

Are you talking about the Stage 1 itself, because it does increase HP just by itself. See below. Yes, it will allow increases with bolt ons..just don't expect more than 15HP.

 

I can hear it periodically with mine. Nothing I'm too concerned with because as everyone else said. It's probably always been there. I'll be putting on my charge piping and BOV soon enough anyways.

 

Thats about what I was thinking and thanks ... I saw the Dyno sheet and it made sense.. I was just hearing earlier that the GMS1 doesn't increase HP ... didnt make sense.. but thanks for that.. and the addition of a K&N on top only giving about 15HP? makes total sense.. and its all I really want to do with it at this point.

 

That would be the K&N Short ram intake kit..not just a drop in filter.

 

haha yes.. of course... I was planning on a Typhoon.

 

I have GMS1 as my winter tune, when its nice out I have byt throw my tune back on.

Anyway, i have had my hahn on and off many times with both the GMS1 and aftermarket tune. And I can tell you right now the car spools faster and feels faster when an intake is on with GMS1. Is it more power? I dunno i never dynoed my GMS1 with boltons, only my byt tune with boltons. Was thinking about it, but didnt want to waste a pull.

Anyway, is there more power? I dunno, but you the car def accelerates better, doesnt automatically mean more power tho with turbo cars.

 

I still think you're not fully understanding this.
GMS1 will give you more horsepower-yes
Adding an intake on top of GMS1 with no other tune will not add any more horsepowers-correct. So no there won't be 15 more.

 

yeah this is the only part I'm not fully sure about. I had read in other posts, that "some" gain even on top of the GMS1 is possible.. but the truth was that you wouldn't get 100% out of the GMS1 tune because it isn't designed with other add-ons in mind. its meant to be used with the stock parts only since its a canned burn.

it would be nice to see what people were making in stages HP wise.. dyno it stock.. then again with a K&N... then a catback... ( or variables like a DP only ) , then a GMS1 on top.. see if the gains remained from the accessories and how the GMS1 tune handled them once installed. I'm trying to feel this out before I purchase what I want... which is really only a Typhoon, a hahn 3inch, and a GMS1...

 

exhaust is pointless with GMS1 Considering your still running the stock DP. get a DP and Intake + GMS1. I had that setup before i got tuned, and i can tell you each part DEF made the car quicker, cant tell you hp numbers exactly. I think next time i dyno ill switch back to GMS1 for a pull, but i dont have a gms1 with no mods on it so I dunno.