Ok heres what im gonna do in the near future
I'm gonna get the stge 1 and buy nates pulley. sry if this is a repost but my Question is will the 42 lb injectors handle the 2.85 safely or should I just stick with the 2.90. And is the stage 1 tune the same as stage 2? I asked the tune question b4 and only had one response so any help on that would be great. Thanks in advance

 

The Stage 1 and 2 ECM Flashes are the same. As for a 2.85 pulley vs a 2.9 pulley, nothing is guaranteed safe, but 2.9 is a little safer and will be on the edge of maxing the injectors out. For the half pound of boost, I personally wouldn't risk it.

The other thing to keep in mind when you buy a pulley is that your current pulley is pressed on on supercharger so you will need a hub to bolt the new pulley on to. You will also need a shorter belt. You might be better off saving up the little extra, getting the stage 2 kit and that way you have that for the warranty and then down the road you can easily swap the pulleys out.

 

new poster, but i totally agree with him.



btw welcome siracing!

 

thanks for the input.

 

Just make sure you pick up a stage 2 hub somewhere or that pulley will be a paperweight (even though it only weights 3 oz!) for a while.

 

i was gonna get the hub from nate as well

 

Ah, I didn't know he sold stage 2 hubs. I know you guys are saying the stage 1 and 2 flashes are the same, but I don't see how they are. Stage 2, with the smaller pulley, obviously runs more boost than the stage 1, because it is still on the stock pulley. I just don't see how they can be identical.

 

see i thought the flash was mainly just to take the rpms to 7000

 

Anything under a 3" should have 60lb injectors to be safe

 

well poop
thats ruining my plan to save some money lol

 

Don't waste your money on stage 1. Get the 60's, get a custom HPT tune and run the 2.8" or whatever size you wanted to run.

 

+rep, very good post.

 

yea but I want to keep factory warranty I only have 3900 miles on it.

 

If you want to keep it...

Stage II
GMP Exhaust
GMP manifold
and call it a day

 

that is actually my plan

but my shop is cool so they wouldnt say anything about a pulley but thats what I wanted to know 2.90 is safe for the 42lbs

 

Stage 1 and 2 tunes are identical . My stage 1 tune has the exact same individual calibration file numbers as a stage 2 tune that was posted on here . They are the same , In the GM stage2 instructions from GM it says

LSJ UPGRADE KIT Stage 1 to Stage 2 PAGE 8 OF 24

IMPORTANT !

If you have not previously installed the stage 1 supercharger upgrade kit you must perform the following :

Your vehicle must be taken to your GM dealer to have the new calibration flashed to your ECM,

Even the calibration file numbers are the same

Stage 1 calibration file - 2006 Cobalt SS - 12607645
Stage2 calibration file - 2006 Cobalt SS - 12607645

 

ahh giddy up thanks man +1 for ya

 

Thanks.

No problem.

Thanks and back atcha. You help steer enough people in the right direction, I figured it was my turn.

 

Don't you ******* dare waste your money on that POS honed manifold. A header does NOT void your warranty

 

Yea I've read some bad things about the gm manifold. Which started making me think about getting something with the dp combo with high flow cat.

 

Best header/dp for the money is ZZP's. I think it's 449.99 with a high flow cat.

 

wow thats not bad at all. I was expecting like 700 or so you want a + or a - rep for that. lol

 

Neg rep please.

 

i have to spread the wealth ill try and go to another thread