i have a 87 t2 was salvaged but i brought it back to life with help. long story short last year i was driving it was my dd n my turbo blew up blue smoke evry where i got a s5 turbo on it with s4 back piece to manifold i got a new boost controller n gauge. turbo use to glow but after 2 minutes of ideling but boost controller n some tinkering it went away car runs great it cuts out when im driving not a lot but a little bit but real problem it smokes blue when i beat it but goes away i have already 100 plus miles on it all the old oil shoud be burnt out any ideas

 

crankcase ventilation is modified and or /insufficient
you may also have an issue with timing or blocked cat if your turbo glows with idle