Looking at getting a dumpvalve for my z20Let
I am looking at getting either a Collins or a Baileys DV26-D
I dont really want a loud dumpvalve so i am looking at leaving the standard one alone and running a second dumpvalve.
How is this done, i have found a guide through the search function but it includes removing the standard dumpvalve on the turbo and i would rather leave this alone to keep the noise down.
Also forgive me for being stupid but some of the threads i read have acronyms like PCM, BFS etc when installing a dumpvalve, jus wondered if there is a guide to install a it keeping the standard one.
I have found this kit on ebay but i have ordered a powerpipe with a dumpvalve take off so will not need the t piece, what bits will i need to install the dumpvalve.