The car runs so different now, i have to use the pedal less, the responce is amazing, even when i put the foot down it goes even harder then before. I tested going up a hill to see for improvement, basically went in gear 3, 42kms at about 1700 revs and it held it the whole time without having to push the pedal any further. Feels like my lil civic has been reborned. Amazing DIY props to u beeza