turnout was good for the dyno and im glad i went . to the guys that were there, you were right that stage 2 came with a 3" pulley . i dont know where i saw it sayin 2.8 . id say all in all we were all sadly surprised. 3 of the 5 cobalts were stage 2 for the most part , 1 stock and 1 intense stage 3 i think. my best pull got me 213.9 hp and 196.5 torque. WEAK! barely more than stock. im sure the other guys will post their numbers later.it was 105.5 degrees where we were testing so im hoping that was the number killer. anyone have any input as to how bad the temp could have affected our pulls percentage wise? i was really hoping to see higher numbers , as were all of us i think. the guy at the shop said he hasnt seen any stage 2 cobalts higher than 250 hp except for his that is at the dealer getting an engine put in it . by the way thanks for the tip on smokey bear at county line rd, he was sitting there all backed into the weeds by the bridge on my way home.

 

Don't forget to mention that he's getting a new engine put in because he ran the last one up to 8200 rpm! Wish I had that kind of money to **** away...

SilverSS's car is a freak, he put down 232 hp (I think) with basically the same set up as me, 213 hp being my best. We lined up from a 40 afterwards and he slowly pulled on me, my front bumper at his rear at around 100 when I let off (I know, I've preached against street racing on here a bunch of times). I have to say I was impressed with the Volvo putting out 241 tq, he was running pretty even with the rest of us on the drive afterwards.

 

not sure its a freak. he has a smaller pulley than both of us and he got run when it was only around 100 degrees out. you were at 103 and change on your turn but it was straight up 105.6 degrees when i got to go. i know ours were very close spec wise but mine never made the 200 torque mark gm boasts. i think if i was run at exactly the same temp as you i wouldve made more power than you as i was run at 2 degrees hotter air and i made a little more hp than you. you both had me torque wise. wonder if those mounts helped that for you? keep in mind i did get that little extra hp and i had the 3 incher kicking . i wanted to come out and play too but my chick was toasted , it was a scorcher . maybe hot import nights we could all meet again?

 

Do you guys do any gtg's during the week or anything? I jsut got my ss yesterday and would like to meet up with some people and see what htey have done. More specifically, I want stage 2 but need to find out if its really worth it and also what the GMPP exhaust sounds like.

I'm glad to see there are other enthusiasts around here.

 

Temp will play a big part on any car and so on a charged car. Tuning as well. What kind of air/fuel numbers were you guys getting?

 

We have no idea. After the first couple cars ran, someone tripped over the wires for the A/F and ripped them out of the computer, screwing up the wiring harness.

 

Joe, I think you may have seen a thread on here about Pully Boys new 2.8" pully for the stage 2 hub. As far as temp, the hotter it is, the more it will kill your numbers.

 

so if i get an aftermarket 2.8 pulley is my stage 2 belt gonna be ok? also everyone says you need a press to put the pulley back on . is that so or can i just do it in the driveway ?

 

The stock pulley hub is a single piece and requires a puller to remove it. Stage 2, which you have installed now, is a 2 piece "quick change" pulley. With the Pulley Boys 2.8" all your doing is replacing the outer ring. As long as your dealer didn't torque the crap out of the blue bolts, you can do it in less than 10 minutes. No press required.

 

nice . now are those reverse thread bolts or just normal lefty loosey righty tightys? can you send me a link where ya got that pulley?

 

Damn that sucks. That would tell a lot as well.

 

it could also be the dyno, because if 5 cobalts went there and none hit above 250, the dyno might just be reading low #s. the heat also will add to the low numbers

 

http://www.pulleyboys.com/lsj28.html

I recommend you spend the extra $2.49 and get those bolts on that same page. It is not necessary as you can use the blue bolts that came with the kit, but just in case your dealer torqued the blue bolts too tight or the bits that came with your stage 2 break. My dealer had to drill the blue bolts out because they overtightened them and also broke the bits trying to loosen them. The heads of the blue bolts have a wierd spiral-like pattern that I haven't seen before. Oh yeah, lefty loosey righty tighty.

I think the calibration did have something to do with it, but SilverSS, who more or less has the same set-up, still put down almost 20 hp more than me about 45 minutes before I got on, the difference only being about 2-3 degrees higher for me. The dyno operator apparently didn't like our cars, though, as he named the saved files as "slowfwd 1", "slowfwd2", etc., and then named the 2 Mustangs that dynod as "fastrwd 1" and "fastrwd 2". The Mustangs (last on the dyno) seemed to dyno about right, a stock '06 GT getting about 271 rwhp.

 

hey joe, i only have the 2.85, im not running a smaller pulley than everyone, It has been said by others too, that my car was a freak from the factory. Im getting Hp tuned shortly by a local GM tuner, beacuse before my stage kit i put down 242 on that same dyno machine we were at on a cold febuary night.

Cold Feb Night (3" pulley/injen intake/colder plugs)=242HP

Hot ass summer day (STG2 w/2.85/colder plugs/air filter)=232HP
my car is def quicker than it was in feb so..
pretty lame....it has to do with the heat and being in a hot ass humid little garage also

 

you know whats also funny that dirtbag operating the dyno road off on a bicycle...****** prob. cant even afford a car

 

For my own clearification, you and a few people with stage 2 cobalts did some dyno runs here in FL, and they weren't even higher than 220 HP?

i was going to put mine on the dyno in a shop here in daytona today but lost track of time, if I get around that 215 number i'm going to be pretty upset, with the crap and money I went thru to get the stage 2 put on...

\edit
I see a factor was the location and eviornment in that shop. Hopefully the one I go to is not like that.

 

BTW, SilverSS, do you shift at the 7k redline or a few hundred before? You were right, we both hit it at the exact same time, but it seemed like you made the most ground on me just before I shifted at redline (2nd to 3rd and 3rd to 4th, then let off shortly after that). Just wondering if it is better to shift sooner. Then again, maybe that's why your clutch slips now and mine doesn't, maybe I granny shift too much. Next time I'm taking my floor mats out first

 

did you guys change your plugs at all? at least check them to make sure that they are the proper gap .40. After adding stage 2 the plugs actually compressed and the gap went smaller on my car so when I added one step colder plugs the car really felt more lively than it did before

 

BKR7E's at .40 several days after I got stage 2. Before the plugs it ran like poop, but after it ran better, still not perfect, but definately better. Since I've got the 2.8 now I went ahead and reduced to 0.35 to see what happens, haven't opened it up yet to see if there is a difference, but if there is I'll let you guys know.

 

yeah i shift at 7K, my clutch only gives me trouble at WOT from 1st to 2nd

if i shift at 5k from 1st to 2nd WOT, it wont slip, otherwise clutch is fine

 

so your saying that your dyno sheet was bad beacuse it was a 4 or 5 degree difference?

If you want....ill be in Orlando with everyone next week and we can make it a little interesting..wanna run me for a little money???

 

Where's the dyno? I'll go and I'll get more than 200.
Oh..and 2006STI365, be careful someone near there might suprise you.

 

it better be the dyno and the environment . if mine is putting out less than stock numbers at stage 2 im gonna have some words with gm high ups. i know its way faster with stage 2 than it was at stage 1 but those numbers, aaagh. how many miles you got silver? im thinking since silver's been on that shops dyno that some 1 may have done a little something extra possibly? his numbers were way too high compared to ours and he was still on the stage 1 flash supposedly!

 

Hey Joe, let me ask you this, what does your dyno sheet list for humidity? I noticed mine lists 10%, way off, it was somewhere atleast above 80%. Messing around with this engine tuning calculator that info changes the correction factor by more than 15 hp.

Am I on the right track here or just grasping at straws?

Clearwater, Florida. How long before you get here?

 

who did something a little extra?

my mods are:

GM STG 1 (injectors & Reflash)
GM STG 2 Belt
ZZP 2.85" pulley on the stock tensioner
BKR7E's
Intake

Thats it. my cars slow

I agree that its weird, beacuse mike should have put down better #'s than me beacuse he is running the 2.8 which isnt much smaller, but it is...he also has a full injen intake, where i just have the airbox mod...

joe- i have 14k miles.......