I believe tommorrow I'm going to order the ZZP 3 inch s/c pulley for my car and I had a couple of questions for anybody who can answer. I'm ordering this from Cobalt-Addiction btw..

1)Do I or do I not need the gm shorter belt? In the info for the pulley is says that anything below a 3 inch pulley size requires a shorter belt. Now in the C-A premade stage kits, the stage 1 kit has a 3 inch pulley and the shorter belt. I'm assuming what I read first is right and the tensioner will fit the smaller belt with a smaller pulley, but if it's 3 inches I don't have to have it. Make sense?

2)Am I really ok without a tune until I get an even smaller pulley and bigger injectors? I know that they tune the s/c's "nice" from the factory(I say "nice" due to emmisions), or am I going to be running a lot leaner and be burning a lot more gas. I just don't know if the computer is going to be able to make up for this "problem", and I don't want shitty gas milage if I can avoid it, well shittier then it would be . My mods up to this point are in my sig. No cel so far.

3)I've never ordered from Cobalt-Addiction. Are they good? Do they have a good turn around time? I've heard a lot of people talk about them, and some say good things and some say bad. I was just looking for a general opnion.

And anybody who has/had this similar setup, I'de love to hear from you. I'de like to know what kind of power I should be looking for out of this.

Any feedback is welcome. Thanks a lot guys!

 

1.) Yes you need a shorter belt, even the Stage II 3.1" pulley comes with a belt.
2.) Absolutely, your computer will bleed boost off above 12.5 psi with the stock tune, and your injectors wouldnt be able to handle it anyways.
3.) NA

You wont make any more power, the only advantage I could see is hitting 12.5psi a little faster.

 

I've ordered from CA and never had a problem and they ship really quick.
If you're going to a 3" you will need a smaller belt, but if you're only doing the pulley I'd get the upgraded injectors and stage 2 tune too. Your car will run better that way

 

I plan on piecing together the stage 2 kit and being as I have to get the aftermarket hub for a different pulley anyway, then I would just get a 3 inch pulley now for the time being, because it's going to be a while before I get everything together. I guess I'm just itching do to something performance-wise to my car soon that doesn't cost 500 some dollars that I'm going to need eventually anyway. Any ideas?

 

If you going to order a zzp pulley buy it from zzp.

 

I would just wait till you can get everything at once (injectors, belt, pulley, someone to tune it). I would just figure out how much you are willing to spend and go from there. I know you can get the GM stage 2 kit pretty cheap from CED and then you keep your warranty. Feel free to ask me any questions about mine if you would like.

 

^^He's right and you can get a 2.9 wich will give you a little more boost and they have the 2.9 and 2.8 that fits the GM hub so you don't have to replace the hub

 

Does anyone have the link to the zzp site?

I don't have to have the pulley right now. I just want to buy something that doesn't cost a billion dollars, but that's not cheap either. You know, something that will make me feel fuzzy inside for a while, haha. Maybe the gmpp header?

 

zzperformance.com

 

Actually i ran a zzperformance 3 inch modular pulley on stock tune and stock belt for 10,000 miles. It ran great and had alot more power. No belt slippage and it pushed 16psi. The only thing was the check engine light was on cause of it running lean but it ran good. I havent had any problems with it but now i have 60s, a 2.7 and stage 2 belt. I also ran 1 step colder iridiums.

 

awesome! i think i'm gonna get it tomorrow and put it on and if i don't like the outcome, i'll take it off. i'm going to have to buy the hub anyway as i'm piecing the kit together, so why not get a pulley to run on it for the time being.

 

You should have no problems at all with a 3.0 pulley, I am running it and I am having no problems, my buddy with a 06 SS is running a 3.0 on everything stock and he is having no problems, Good luck with whatever you choose to do!

 

The stock tune will bleed off all PSI after 12.5, so it won't help too much anyways.

 

uhhhhhhh..... anyone else want to comment on that one

I'll repost this in case it wasnt read the first time:
1.) Yes you need a shorter belt, even the Stage II 3.1" pulley comes with a belt.
2.) Absolutely, your computer will bleed boost off above 12.5 psi with the stock tune, and your injectors wouldnt be able to handle it anyways.
3.) NA

You wont make any more power, the only advantage I could see is hitting 12.5psi a little faster.

The GMPP header will give you the warm and fuzzy but only for a little while. Honestly just realize you dont have to spend the money right now, save it up, and get Stage II. You'll be a little more than warm and fuzzy once you get that

 

dude go with the 2.7 and 60 pound injectors its way cheaper than a stage 2 but if you want to stay under warenty then go with the stage 2

 

I have a ZZP 3.0" pulley ordered from Cobalt Addiction with one step colder NGK iridiums and have been running it for at least 12,000 miles.

1.) Yes, I'd recommend a belt for best performance but I haven't noticed any slippage and I've tried to make it do so.
2.) The computer doesn't bleed boost--I see 15psi all day and it boosts faster than the stock pulley throughout it's entire range.

I have a CEL like someone mentioned before, but these cars run pig rich stock so it should still be at a safe level.

It does make more power, I can feel it on the old butt dyno for sure and have walked on 2 stock SS S/C's. I will be getting another dyno soon to determine just how much and to get an A/F reading as well.

You'd be better off saving your dough for some type of Stage II kit, I'd recommend Cobalt's Addiction's.

 

Interesting, verrrrrrryyyyyy interesting. Do you have the boost by-pass mod?

Yes the cars run rich but they are over-working the injectors to do it, and unless you've got a WB on there you cant really tell if it's safe or not.

 

Seems to be a mixed opinion of what will happen. I ordered it last night and I'm gonna put it on and see how I like it and what I notice. If it doesn't do it for me, I'll take it off until I get the injectors/belt/tensioner/all that good stuff and do it all at one time. I ordered it second day air, so it should be here Friday and hopefully on Friday or Saturday. I'll post what I find out for myself. I'm perfectly aware that it could go either way, but what did we ever get by not trying, right? It's not like I'm spending a lot anyway. It was $114 with shipping.

GSoccer24, I'm glad you have that NGK number in you vbgarage, because that was my next question. Thanks!

 

I've been running a 2.9 with the stock belt and stock tensioner. You don't need the stage 2 belt but it wouldn't hurt. Also a tune would never hurt you either, but the stock injectors are going to limit you.

 

Isn't there a way you can by-pass boost by running the hoses in different directions? My friend had a supercharged corolla and he did it that way. Is there a how-to on that? I'm very vague on that part of it, but he's extremely good when it comes to all things forced induction.

and from the looks of whateverbody is saying, looks like next month comes the injectors, belt, tensioner and the tune.

 

https://www.cobaltss.net/forums/show...t=boost+bypass

 

Thanks!

 

MUWHAHAHHAHAHAHAHHAHAHA

"The only thing was the check engine light was on cause of it running lean but it ran good"

you sir are a retard.

the people on this forum amaze me....

to the OP.....

with a 3/2.9 pulley a smaller belt is not needed, you can get one but theres no "definite" need for one, another option is bumping to a larger idler pulley to help take up slack.

you'll need one from a caddy catera or a GTP(76mm, 6rib, flanged)

a tune will be needed to take advantage of the extra boost, the car will bleed off at 16.6psi but i cant see a 3.0 getting that high ever/often

however dear sir, i do wish that you would be smart about this and do the fuel side of things before you start adding boost.

if you want to be like the guy above^^^^ and run your car lean as **** for a while then be my guest, remember this tho....running a car lean often doesn't cause damage "rite away" but you do it enough or for a long enough time and you'll be shitting number 4 out your exhaust.

to the people who's logic is this "i'm ruining a smaller pulley on stock injectors but since the cars so rich this helps lean it out and thats ok"
enjoy the fun while it lasts, because it wont last long.

your all missing the whole god dam point, the car is running rich to a point, not this infinite amount like you all seem to think, a small drop is size will move more then enough air to lean things out to a dangerous level,

HOWEVER that is not the issue...your bigger issue is the fact that your running a high load, high impedance injector up to, and well past its "static brake up" point every time you go up past the 5k-ish mark and that can, will, and does blow out injectors, "freezes" them, and generally wear them down at a rapid rate.

 

cobi--i'm not running boost bypass

06black--i understand what you're saying. however, i haven't heard of anyone having an issue running a 3.0" with stock injectors. above 5k is probably the dangerous point, but how much time does the engine spend under load at that range is what you have to think about, but it only takes one time. i think i'm dynoing on July 21 so i'll be able to see what the a/f looks like for sure, unless anyone has this setup and already has the info, then please post up!

 

if a car is commanding 10.8, and running at 11.2 i really don't see how it would "blow up" so to speak.

you're still hosing down the cylinders with fuel