[caverman]

I think you need to take your business to another shop that has a clue.

There are plenty good shops in the Houston area. There is a very active Camaro club as well. You need to go talk to some of those guys.

I can tell you first hand that headers and a tune will get you a significant increase in power. You won't be disappointed. Ask anyone that's done it.

I will say that they are correct in saying that they can alter the dyno to make it say what they want but realize a dyno should be used as a tool to measure the increase in power and allow for a tuner to make adjustments. Don't live by just what the HP numbers say. Look at the increase in power.

I'll be honest....with a statement like that, I wouldn't let that shop touch the tune on my car. It's obvious he doesn't have experience with adding headers to an LS motor.