So, before posting I went through the search option and didn't really find anything beneficial to what I want to know. So if it has been discussed already, sorry.

Now, I dont have the car, my roommate does, buuut he doesnt really know that much about cars. He's getting better, but yea.

What I first want to know is at stock what is the max boost that the supercharger pushes? I've heard 14, but I cant actually find anywhere that says this. If it is 14, then theres a problem because we can only seem to get about 10-12#'s out of it. So I'm wondering.

Also, I've head that there is a boost bypass mod that allows the boost to engage faster, anyone know anything about that?

Is the stage 2 kit actually worth it? And I was reading that some people have even gone in afterwards and installed an even smaller pulley then the 3" that comes with the stage 2. I heard that 2.9" is about the smallest, safest you want to go. What would I have to do with the hub to get the pulley to fit?

Are under drive pulleys worth it? And what about an engine torque dampener. What were really looking for is cheap effective bolt-on mods that are a good bang-for-you-buck deal. We already did the airbox mod, and nothing else performance wise but some visuals.

So, those are my questions. Lol. Hopefully I'll get some good feedback. Also, if I have more questions I'll go ahead and post them here.

 

stock boost is instantaneous 10psi, and will build to 12.5psi

how can the boost engage faster? its instant :P

Stage 2 is an awesome mod if you like keeping your warranty.

Underdrive pullys isnt something anyone has really done yet.
JBP is piloting a project for one.

Engine torque damper is great for reducing wheelhop on the street.
you may still get some at the track. but its a good mod.

 

stock is 12.5
boost bypass is for stock tunes, once you get a tune you can eliminate that option ( i belive), im still running the bypass with my 2.9 and intake with no problems and i personalyl belive that its helping me out a bit
GM stage kits? not worth it to me, my warrante has been up for a bit now but the kits are not worth the money, go aftermarket like intense, Cobalt Addiction or others
the smallest our supercharger will fit for a pulley is like 2.6 i belive, after that you need to grind the snout, but when you get that small of a pulley you create a lot of unwanted heat that kills your engine and make big boom
uderdrive pulleys? not sure
id get a nice size exhaust, maybe an ingals, short throw, good set of tires because thats one of the weakest points on the car

 

the stage 2 comes with pulley and hub you can buy nates (nherbst) pulley that he makes or what im gonna do is buy the stage 1 which is just injectors and the tune and buy his hub and pulley for $90.00.

 

faster boost you can use gm stage 2 kit and get nates 2.9 and hit 17psi and be safe turbo tech racing sells custom motor mounts and tranny poly bushing best ainti wheel hop mods

 

So with buying the stage 2 it comes with everything that the stage 1 comes with correct? So he could skip the stage 1 and go directly to 2?

Will the Engine torque dampener void the warranty? And were are they installed?

Haha, I wasn't too sure about the boost bypass thing, some people were talking about it on their GTP's but those are m90's. Some were saying that what it does is cause to boost to ramp to quickly, and it brings an insantaineous(sp) boost to 10#'s.

Also, what gear and rpm range are you going to see 12.5? We saw it climb in 3rd to redline, but we werent sure what the exact boost was.

As well, what about the smaller pulley after the stage 2 3"?

@Blue SS-Supercharged -- I forgot to mention that the car is BRAND spanking new. Has less than 3000 miles. It came with perelli tires and the factory short throw. Exhaust is going to be a gmpp exhaust 3"

@smoke jenson -- he sells a hub AND pulley for 90$? and that would boost to 17psi? is that better than the stage 2?

 

Yea u can buy just a stage 2 the pulley is like 3.033 i think is that right someone correct me if im wrong. But 2.9 is the way to go with just stage 2 maybe 2.85

 

I replied before, but I'll say it again.

@smoke jenson, would it be worth the money to just get the stage 1 and then the stuff from nate? that would perform better than the Stage 2 kit? what I'm worried about is warranty

 

right, i bought mine with 25 miles and there are some common problems that a warante will cover but the stealership turns into a **** after its up. the stock perellis SUCK i went through mine in 8 months, that was also with winter driving tho so that might affect them, but you will notice a difference between the stock shot shift and say a hurst (what id go with) or a B & M (Cheap but works)

they have to prove what you did caused the problem, i took my car into a dealership with my intake visible and short throw in and they never said a word, its really up to the dealership on what they want to work on or not, but remember most things are reversible incase something did happen. i personally would piece my own kit together because A. you can get the parts a little cheaper B. can get better performance ( GM stage kits come with 42.5 LB injectors whereas C.A. stage kits come with 60's) C. you really dont want a tune that comes in the mail, with almost every performance mod you do you want to retune your car to make it run that much better, but with tunes comes a risk of what might happen

 

Yea, I'll have to look into that. If it were my car I'd personally do that but he's a hardass about everything and doesn't want to change much. lol. So I'm digging around seeing what I can find.

So......Say i buy... 60lb injectors and nates pulley and hub, that would perform better than the stage 2 kit? I'm still worried about warranty. Because with the stage 2 atleast you KNOW that it will cover in the warranty. But what would I do for the tune?

 

If warranty matters, just get stage 2, ignore stage 1.
the stage 2 pully is 3.06"

If you dont care about warranty, ignore all stage kits and go aftermarket.
buy a 2.8 pully, 60lb injectors, stage 2 belt, and get a good solid tune done specifically for your car

at redline in 3rd gear you should see around 12.5 stock. this is dependant on elevation, air temp, accuracy of the gauge etc.

Dont go with a 3" exhaust unless you intend to go with some very serious big power.
its to big.

 

Yea if u are worried about warranty then get stage 2 and then buy the pulley from nate. so if it ever need warranty work u can put the stage 2 pulley back on. Only reason im doing the stage 1 with 2.9 pulley is cause 1 its cheaper than stage 2 even with the pulley and 2nd i work at a dealer and they will look the other way on the pulley.

 

Haha alright anomalous just answered the warranty question. I'll talk with him. We might wait until the warranty is up to start modding then, that way we can get the good ****. Also, if not 3", then what? what does the car come with stock?

 

2.5" But if he just bought it stage 2 would still be alright for the extra hp it is worth getting it if hes just gonna be doing minor stuff till warranty is out.

 

How much is the pulley from nate? and Will it work with the stage 2 belt?

 

its a mixture of 2 inch and 2.25
the gmpp exhaust is a little bigger, and has dyno proven gains of 10-12whp

i would suggest either the gmpp, or look for a 2.5inch full system.

basically unless your pushing 300hp+, 3 inch is gonna take away a good chunk of low end torque, and push your powerband higher in the RPMs.

IMO 2.5 is probably the best middle of the road for what most cobalts end running for HP.

 

Like 50 I think and yes it will and stage 2 pulley wighs like 13 mm and nates weighs 3mm very good product

 

lol is that right?

 

Well, I'd have to say that most of my questions are answered. This forum is amazing, as well as the knowledge of the people here. I'm definitely going to recommend this website. Thanks alot everyone.

 

yea i think so. I remember someone taking a pic of both on a scale. now i have to find the dman pic thanks alot to the gallery I go!!

 

isnt MM a meausre of length tho?

 

lol Yea. He might mean MG

 

Nope meant oz dont even know where mm came from lol anyway heres the thread with the pics
https://www.cobaltss.net/forums/general-cobalt-68/thank-you-nate-63167/

 

Niiiice. So do I message him or do I go to his ebay store?

 

I'm pretty sure he meant ounces.