SsSlowbalt

i got some questions and i think someone can help me.i dont have my cobalt yet but i plan on gettin it at the end of the year.but right now im trying to figure out all the gm performance parts to get.i plan on getting the stage 2 kit,touring exhaust,and the gm manifold and lsd to if its not standard.i work at chevy but i havent gotten a chance to ask the sales dude about those questions.i think/assume that will make the hp go from 205 to 260? i kno the stage 2 kit alone makes it go to241ish so with the other 2 things 260 right?.but yea back on point what is the g85 package?and wuts the point of the stage1-2 kit what is that?. and i dont kno alot about these types of superchargers.and i havent heard anything or read anything about it yet but does anyone know about puttin a BOV on these.my friend said yes but i dont think he really knows.he thinks anything boosted needs a bov.and 2nd has anyone put a boost controller on.i dont plan on the boost controller since im trying to keep warranty but the bov maybe if someones done it. and has anyone added the performance parts when they ordered the car and were they installed when you got it?... i think thats about it.so someone help me out please.

blueta

No you don't need a bov for one. Boost is created after the tb so no need. Hell people with turbo's/superchargers before the tb don't always run bov's. Mostly the automatic crew since they don't have to lift the throttle to shift creating air bouncing back and forth between the outlet of the power adder and the throttle blade. That effectivly stalls the compressor and takes longer to spool again. But again since ours is after the tb it won't do squat. Also would be plenty hard to work one in there.

The boost controllers could never raise boost on these cars. Supercharged cars need smaller pulleys to do that. We aren't as lucky as the turbo guys in that area.

Stage 1-2 is just a kit that gives you all the parts you need to convert your stage 1 car to a stage 2 (if you already have done a stage 1 kit). Just get the stage 2 first.

SsSlowbalt

ok that makes sense with the bov and boost..i kno more bout turbos then i do about belt driven chargers...now the 1-2 kit y is the 2 kit buy it self more then the 1 and 2 kit if u can answer that..and do u kno wut the g85 kit is?

StoryoftheYear

the g85 kit= lsd and used to have the recaros

SsSlowbalt

ok that clears that up..anyone still kno y the 1-2 is cheaper then just the 2.and any1 got any official numbers on my assumption from the mani,stage2 and exhaust?

ItalianJoe1

iTrader: (10)

Stage 1-2 is what you buy if you have stage 1 and want to upgrade. You have to buy Stage 1 first.

The power thing, I got 4whp out of the GMPP Perf Exh, and I would guess about the same out of a GMPP manifold. So around 250 would be close. I'd guess 245 or so really.

SsSlowbalt

so how did that 1 dude pull off 12 hp from the touring exhaust i was reading about on here.and the kit..that means ill have to buy stage 1..1-2 ..and 2?

blueta

No, you would have to buy stage 1, and then stage 1-2 and what you essentially created is a stage 2 kit. So if you want stage 2 just get that one to start with.

ItalianJoe1

iTrader: (10)

Not sure, I dynoed 217/188 stock, 221/190 with GMPP exhaust. It was not on the same day, but it was the same dyno.

Best bang for the buck, buy stage 1 and get your own pulley. Cheaper than Stg 2 with the same results. Or buy the whole stage 2 Kit.

SsSlowbalt

ok..so basicly stage 1 is jsut part of stage 2 and the stage 1-2 kit just gives u the stage 2 parts to make it a stage 2.or i could just buy the stage 2 all together.right?..i have a ton of other questions but im sure most of them ill find just browsing around on here.thanks for the help if i got any more questions il b sure to post it up.again im sure someone on ehre will b able to help me haha.

Shortbus

Stage one consist of injectors and a re tune, stage 2 consist of injectors, a pulley, a shorter belt, and a re tune. They are total different kits. There is no stage1-2 kit, its a stage 1 kit, and there is a stage 2 kit, buying them both would be totally pointless.

alleycat58

No actually you're wrong.

YOu can buy Stage 1 to start with, then down the line ADD stage 2, hence what the 1-2 kit accomplishes. Stage 1-2 is for people who for whatever reason only purchased stage 1. Then say 6 months later decided they wanted stage 2. So it turns stage 1 into stage 2.

SsSlowbalt

i work for chevy and ive seen the catalog with the stage1-2 kit..and ive seen all the products for the cobalt ss/sc.

Acidangel_5.0

what people are not mentioning to you...

the main difference between the stages of GM and the rest of the crowd is the Hub Assembly..
i wish people just didnt say .. buy stage 1 and get a smaller pulley somewhere.. doesnt work quite that easy.. you still have to pick up a new hub so prices are not gonna be that much different

you can go stage 1 + buy 3rd party hub + smaller pulley
or
buy stage 2 and have all GM

personally.. id go with GM.. price might be a little more but security of mind > *

chevysalesman614

the 1-2 kit is like $400 for just a pulley and hub, that you can get for $100 @ ZZP

you will probably not have 260whp from those mods. maybe more like 245-250 to the wheels with stage 2 and an exhaust. (on a mustang dyno... maybe you'd see 260ish on a dynojet)
Might i suggest the airbox mod or a cold air intake?
a boost controller will do you almost no good on a supercharged car. the s/c pulley is the only way to raise boost. you can lower your max boost with a boost controller (i think) but that would be stupid.
only turbocharged cars have blow off valves. we do not.

thats not entirely true. gm charges $350+ for the stage 1 to 2 upgrade, when you can get a PULLEY and HUB from ZZP for $100. pullies alone are $50. However, i agree about the second part. noobs like this need to stay with all gm parts, so they are covered by warranty ( i assume he can't do any of his own work..)
but when you dont give a **** about your warranty (like me) aftermarket is the only way to go.

SsSlowbalt

dude thats kinda harsh.i do alot of my own work.but those were on used cars that i was just expiramenting on.i kno a fair amount about cars and turbochargers.but belt driven superchargers im new on.and i would like to stay with the gm warranty.but i mean damn i work for chevy and get a discount on the parts.i mean i dont even havethe car yet but as of now im going with the stage 2 and exhaust.and ill proly do the airbox mod.but i dont want to rip into a 21k car that i dont kno anything about.ill b happy with 250 hp for now seeing as my last 2 cars were about 120hp or less from the factory.ill have fun with this car for while till i decide toput a diff pully or upgrade the perf..but i mean cut me some slack here im new to cobalt but not cars period.i hope you werent trying to offend me because thats the way it seems.i appreciate the input because thats what im looking for,but u dont have to make it sound like your putting me down.