Well, I just went to my local chevy dealership cause I was going to upgrade to a vafpr. I thought I read some people were getting them for around 30-40 dollar range. The dealership wanted 82 bucks plus it had to be ordered in. I told them I'd be back much later.

Since that failed I went ahead and put in the TDS spring I just ordered. Needless to say, she's running rich. I tried half way up the tab and it was about 18 psi. So I backed it off almost completely to the bottom, maybe 3 or 4 turns left in it and it's still about 14-15 psi. So I'm guessing this spring isn't a great idea unless used with a vafpr, or if your running really lean.

 

Try www.gmpartsdirect.com. They will have the same parts but a lot cheaper than the dealer will be. I bought mine off gmdirect about 2 years ago for roughly 45 bucks.

 

But Chris is gay so dont listen to him.