I need a missing link for my 90 da turbo but i cant find it i tried ebay and its only for 94 and up will it fit mine or where can i find one for my year?

 

check this out this would work for you http://cgi.ebay.com/ebaymotors...ZWDVW
Although that method of boosting is not recommended... much better idea to buy a chipped ecu and tune it using crome... much better more reliable setup and stock map is good to 10psi... aftermarket map sensor can be bought cheap xenocron.com