Charge Motion Plates...
 

How much horsepower can one gain from putting these on? Are they worth 300 bucks?

Doing all the bolt ons that will benefit before throwing on my vortech.

If you are going boosted then don't bother with the bullshit. You have some exhaust work which is good and a tuner, now would be the time to save for the blower.

Save the money for C&Ls intake manifold if you really want to go that route, as they have the delete plates built in.

I've seen guys pull off some 10-15rwhp gains on full-bolt on GTs, but nothing extravagant. I'd spend it elsewhere if it was me.

I'm telling you and so will everyone else who has been down this road. If you are serious about getting boost in your future. SAVE YOUR MONEY FOR THAT. Do the bullshit bolt on's after your boosted.

buy the blower!

Like everyone else is saying get after that blower. I'd put the $300 towards some sticky tires for after you get the blower on. The blower is fun but it's 100% better with traction!

They will help throttle response a bit too from what I have heard.