Originally Posted by 4r3s

To retort the current top comment in the thread, I believe the opposite is true. In that, automakers typically tune their cars to meet epa regulations which indeed does leave a lot of room left on the table for improvements in the areas of horsepower and torque. Most cars are driven by your grandma and most people can't handle power of a pathetic 4 cylinder engine which is another reason a lot of performance is left on the table. I do not find 50whp out of this world for chipping a grand prix. Why do you find this outlandish?

the grand prix is a very different car than the Z keep in mind. The Z is a sports car and will not have this same issue.

Now is the specific product gforce any good? I don't know.