ok so im getting ready to order my hahn catback and its going to be a christmas present from my parents. with that being said it leaves me with the money was gonna spend on the catback. i wanna get another performance mod and i was thinking either hahn dp or charge pipe. i know neither one of these should do anything to really hurt my warrenty so which one should i see better results from. or is there something else i should consider. i am also going to get gm stage 1 in april for my birthday if that helps. i dont want a tune yet because it is a brand new car and that will come later on. thanks for any advice.

 

**** id be lucky to get $100 bucks for christmas. lol lucky u

 

no question about it dp

 

get a tune from Trifecta that has the "hide-a-tune" feature.

 

i wanna get some more supporting mods first before tune so i dont mess up my stock ic or cp because ive heard of them braking under high boost

 

then save alittle more and do the CP... then tune lol

 

i still rather wait to do the tune later though

 

What is it you're looking for? If it's PERFORMANCE. then I would suggest getting a DP and the HPT tune with it. The HPT tune is now written so that it CANNOT BE DETECTED (by the dealer). I don't know the details..you may want to ask an HPT tuner here.

 

i know there is a trifecta dealer near me but i dont know about one of those dealers but ill think about it for now but yeah im looking for a little bit of a performance gain.

 

Tune first. I put in a K&N and had it tuned. I love it. A DP is my next step. You are asking for people's opinion and most of these guys know a ton about these cars. This motor responds really well to a tune alone. Retunes aren't expensive. Get a good tuner and have a good tune installed, have your parent's buy you a DP instead since the cat back in stock form flows really well. Then you can spend the money on a tune and an intake mod.

 

i agree that tune is the best way to go but i dont want to be pushing to much boost on the stock plastic stuff because i dont want it to fail right now what im thinking is get cp, dp, gms1, a full metal ic, and then tune

 

GMS1 runs as much boost as I do and the stage 1 keeps stock CP anyways so I am failing to see your point. You have to check your CP connections from time to time to make sure they are tight even when bone stock. Its your car so it is completely your decision. From what I hear the GMS1 isn't a good tune anyways. A trifecta or HPtune is awesome. A dp will wake up the turbo and let it spool quicker and allow it to do it more efficiently. The intake mods will allow you to take advantage of that. The tune is needed to compensate for the intake mods. The trifecta and hptunes are also usually selectable so you can run stock when you don't need the extra boost. Kind of a piggy back system really but that will really wake up your car. Good luck either way you go dude, have fun cuz thats what its all about in the end.

 

The GM1 *factory* tune will take it to same boost level ( 22-23) as tuners will. So *pushing boost* to those levels is within GM specs and you will not have problems...trust me on this. BTW...I have HPT tune only with no bolt ons at all (only suspension). I dynoed +50 hp over stock.
Tuners don't have *issues* with install and parts not working right (new map sensors and wires). Having said this...I can't say with *certainty* that your warranty isn't in jeopardy (aftermarket tunes detected). Like I said before...I *think* the HPT tune may be able to duck that issue by reloadeng your *saved* stock tune. You need to verify that though.

 

What i would do in your situation is get a megans downpipe for 150 buck and go with an intake the gms1 ur getting in april will do well with better breathing im not 100% but from what im understanding the cobalt tune is 280 and the gxp gets 290 and part of the difference there is the because the gxp has a better stock intake plus if you are doing all this work to get air out it couldnt hurt to get some in.

 

If your parents are getting you a Hahn catback, you could damn near get a Catted dp and upper charge pipe with the money u saved for the catback. Catback will not give you a performance gain until your either pushing well over 22psi or doing a full turbo swap.

NONE I REPEAT NONE of the parts you mentioned will give you any performance gains without a tune of some sort. Gms1 (I have it and love it) is a conservative tune but really wakes the car up. With warranty. If that's your plan then Get it first and get a catted dp. And upper charge pipe. If your gonna go custom get the same things but do them first befor tunning as to get optimal tuning for them.

Either way the only gains you'll see from a dp and charge pipe is mildly quicker spool of the turbo. Possibely a little lower boost levels. Your base tune will learn down Airloads to keep trq as close to 260 as possible. Easier flowing air =-boost and =hp.


Long story short get a tune. Don't waste money in catback till you've done all the other airflow mods from intake back.

Although I'd be all over Hahn catback if my parents were footing the bill. Won't lie.

 

^^^^guy is right, the catback isn"t going to do anything for you but make your car sound different.

If you want a real performance gain get a down pipe and Trifecta tune (or HPTuners if you know someone).

A cat back would be the last performance piece I would put on these cars unless you go aftermarket turbocharger. There is an actual dyno sheet of someone who dyno'd with and without a catback on the stock turbo, it was around 5 whp, lol.

 

ok so as of now im gonna check into the tune but im gonna look into downpipes too. i already ordered the catback so that is getting made now i love the sound of it so i wanted that. What downpipes are best i NEED to have a cat because i have to get emissions donw often and will need to be street legal. im not looking to get serious power just a little extra i want to sit at or around like 300whp.

 

Just think like this if you need a part and hahn or zzp make it thats what you should get.

 

i was thinking of getting the hahn one but its $400 or atleast thats what their site said im gonna go price the zzp one. how difficult is the install?

 

i dont think zzp make a catted one. go to megans racing get that cattless one for 150 bucks and if you have to get ur exhaust tested switch it back lol thats what id do cause the dp isnt to hard to get to so switching it out wouldnt be to hard.

 

If you get Hahn items, check out our site at www.TurboTechRacing.com we should be the lowest out there, if not, simply PM us, we will be.

 

yeah if i get a hahn one im getting it from you guys

 

Hmmm ...... I didn't know that . Must be HPT users figured out how to match up CVN numbers . I only thought trifecta had that capability . When did you hear about it..... or where? thx

 

Forget the Cat-back. Stock flows well, like previously stated. besides, you don't need 3" exhaust if your not putting out more than 300+HP. For the same price you could have gotten the Stage-1. Then do Catted DP to protect emissions and a Intake. K&N and AEM make some pretty "friendly" intakes that don't "demand" a tune, but you will probably want to get one eventually.

From what I have also read, the Hahn exhaust quiets it down from stock, until you are WOT, than its a little louder. Just changing the DP with a high flow will make the car louder anyway.

Again, these are just my opinions, and it's your car. I saw that you already ordered the exhaust, so good luck with it!

 

This is just something I thought I read somwhere.....we need somone who really knows this stuff to verify this. I'll see if I can come up with something in the mean time.

Found these threads:

LNF Aftermarket CVN Check - have tech2, need info. - HP Tuners Bulletin Board

Finally got the car in the shop and flashed it with the stock tune. All part numbers and cvn numbers are matching. Ready for warranty.

https://www.cobaltss.net/forums/2-0l...ptions-210165/

If you read the threads I had posted the CVN's have to match, if HPT's reset will make sure the techstream comes up with matching CVN's then cool. I have a GMS1 so I could really care less just trying to help the OP out so he doesnt have his warranty denied.

Looks like *CMILLER* and *IAMBROKE* could have info on HTP solution?