Here we go...

First Impressions

Speed: There is a slightly noticeable gain in acceleration. It is apparent when climbing the RPMS between 5-7K. I wouldn't say it's a huge difference, but I can feel it pull harder.

Sound: There isn't a noticeable gain in volume. However, once you hit 5-6K RPMS the whine sounds more aggressive. Pretty cool...

Boost: I didn't get to redline it in 3rd yet, but in second it was a tick over 15. So according to our boost gauge, that would amount to 16.25 pounds of boost.

Second Impressions

After getting on it more, I noticed more of a difference. The best part about the pulley is the whine. It just SCREAMS...it almost sounds angry The volume has increased as well. I can't wait to get on it again today...

Was this a good investment? At this point for $50 bucks , I would say so. Install was easier than anticipated. If you Stage 2 guys want a little more out of it, go this route.

Pictures of it installed:




That is the tensioner you need to push with a 15mm wrench to loosen.

 

ya im thinking about going with a 2.9 with 60lb injectors and possibly a 50 shot.... the nitrious is what im debating on, and once i learn to tune more thats when the 60's will go on with the 2.9

 

Nitrous is a touchy subject with our cars. I'm not a fan of it in general anyway...I know too many guys blowing sh%t up because of it.

 

I like to see th 2.9 has a decent advantage. I gotta put mine on. I gotta ZZP 2.9 just sitting in my tool box...lol

 

Go put it on! It shouldn't take you more than 10 minutes. You might need someone to help hold the belt so it doesn't fall down when you slide it off. Just push the tensioner forward (Towards the rear of the car). Mine was really easy, but I have heard others have had a hard time loosening that bolt.

 

the 2.9 is a great mod! i dont get why people debate getting it or not, but will pay 200+ for an intake that only makes more sound.

 

Ha way to put it in perspective

 

u finllay got it...very good...now go find a s2 cobalt and run it..see if there is any diffrence..also wat i would reccommend is do the boost mod...ull be seein more boost top end and it will also pull harder

 

i ran a stage 2 cobalt since i put on the 2.8" pulley and with him getting on it first i pulled about 1.5 car lengths after i got around him. smaller pulley=my best bang per buck mod.

silentd, imo if you are gonna put 60lb injectors in you should go with a 2.8" pulley.

 

I think thats why I didn't finish it yet. I had a really hard time getting the bolts off. I got backup bolts just incase though...lol

 

You had a hard time getting the bolts off the pulley?

 

glad you like it! took me forever to figure out that tensioner tho! ahaha

 

what i dont get is why people are paying money for the stage 2 and then buying another pulley when u could get a stage 1 and buy a pulley and save $100.

 

Really? How come?

What is the boost mod?

 

Glad to hear that i made a smart decision when i bought the 2.9 pulley lol. im getting the stg2 installed driving it home right from the dealer and installing the pulley lol so i wont really be able to tell a difference

 

haha there you go.

 

ya but were they smart and have all supporting mods aswell? i know of some people that just go straight to it and boom everything dead.

i have just about every mod there is without redoing internals, cooling mods, wideband, and many more. plus i have hptuners to monitor it the whole time. like i also said is nitrious im very 50/50 about aswell so i may just forget the idea all together depending on what happens. but if i do go with it and bow the motor...you know what that means? racing internals

 

I jumped to a smaller pulley on my last supercharged car and I think this time I'm going to do everything in my power to not drop the size on this one. I want to make it the fastest SS S/C with the stock sized pulley. Has anyone else tried that and what did they gain/run?

Still pretty tempting for the louder whine, but I can do other things to increase that. Maybe not so much the boost level though.

 

You can port the supercharger

 

was it nates 2.9 for the the stage 2 hub i have been wanting to get it for the longest time

 

Yes it is

 

hey man how hard was it to change those out and i noticed you used the same blue gm bolts

 

It takes 10 minutes...look at my picture above where the tensioner is

 

did you leave the belt on when you broke the bolts loose from the other pully

 

I just slid the belt off. Just make sure it doesn't fall down the engine bay otherwise you will have a helluva time getting it back on. Just hold the loop (or have someone do it) while you put the other pulley on there.