Just curious about how much HP I can expect to gain on a Stock MS6 after adding CP-E intake, Magnaflow exhaust, and a test pipe. Obviously there is no exact answer but Im just curious what kind of legitimate gains people are experiencing. thanks guys

see sig

5-10 hp maybe with equal amount of Torque. Don't expect much; it will be more for the sound effect than performance gain.

oops sorry just saw test pipe as well. Maybe 10-15 hp then.

You may not notice a "sit you in your seat" pull difference, but I noticed I wasn't getting beat as bad by people that were faster than me at the time when I did my CAI and CB, also noticed my top end climbed a little a little faster than usual. You'll be happy I think. especially if you went stage one with Cobb or had it tuned with something else. You'll really notice it at that point.