not sure but i think its running rich. as soon as i turn my car on and dont move, itll start to smell gassy, but that might be cuz i got dumps under the car. when i floor it, it usually takes a sec. to downshift (auto) but occasionally when i floor it it will drop rpms, bogs down a bit them shifts. finally my mpg sucks. right now i have an 1/8 of a tank left and i have gone 140 miles. not sure what size my gas tank is but i think im looking at like 12 mpg