I'm posting this here because nobody in Mitsubishi tech has my car so it really doesn't matter.

No matter what gear I'm in, if I floor it, my car sputters and barely accelerates. However, I can ease on the gas and get a decent pull out of it. I daily this car so I really don't drive it floored anyways, but in the event that I sell it, it needs to be running perfectly.

Any ideas?