I know im probably going to get flamed for thinking about going twin turbo but I have 2 brand new schwitzer s1's I got for free. I been looking around here and it looks like 1 of them would be to small. Do you think 2 of them would work better then one, I would be building my own manifold. Also if I were to go with the twins what size wastegate should I get.

 

there is no point in putting in two. its a waste of time, money, & resources.

Sell the turbos & get yourself a t3. Keep it simple & easy

& a 38mm wastegate should work FOR BOTH

 

be different run the 2 s1 turbos. my build is using a t3/t4 and one s1