This also requires the use of a modified valve body inside the transmission allowing the pressure to be redirected to two gears instead of one.
ðɪs ˈɔːlsoʊ ɹᵻkwˈaɪɚz ðə jˈuːs əvə mˈɑːdᵻfˌaɪd vˈælv bˈɑːdi ɪnsˈaɪd ðə tɹænsmˈɪʃən ɐlˈaʊɪŋ ðə pɹˈɛʃɚ təbi ɹˌiːdᵻɹˈɛktᵻd tə tˈuː ɡˈɪɹz ɪnstˈɛd ʌv wˌʌn.