Okay. So, they replaced the fuel pump, cleaned the gas tank, and replaced the fuel line. The original pump was only operating at 37% psi. The new one operates at 57%. Oh damn! I don't think the fuel pump was at 57% psi when I bought it brand new. Acceleration has improved 30% which was already phenomenal. I won't post actual numbers but it's quite shocking. I guess my JKU peeked at my last post and saw that I was going to take it back to the dealership, so it adjusted itself, cleared the engine warning light and activated the eco on light.