Alright, Im used to 6bolt swapping the turbo cars, and this is the first 420a car ive worked on. The kid has an ebay 57 trim turbo, manifold, and 38mm wastegate. and i have a few questions about the 420a (searched, just got lost in this old style forum)

what kind of FMU do we need to use for stock injectors (12:1)?
and how much can we boost these without tuning? (im going to let him use my emanage i had laying around later if he decides to up the boost)


i know i can turbo the car for him but i didnt know what you guys normally boost on stock motors without tuning, or how much with tuning


thanks!