Are there any stores close to you that have a dyno and do tuning? Is there multiple store?? Get a few days and take a look at the shop, talk to to watch them while they tune. 4AG Large Port to Small Port adapter Machined aluminum port adapter. When switching https://blacktop-4age-for-sale04814.total-blog.com/new-step-by-step-map-for-4age-20v-itb-57503520