I'll initially have an E6K, injectors, fuel pump, radiator, and a boost controller. With the stock exhaust, intercooler, and turbo, what boost could I safely run? Also, since I'm planning on needing the fuel down the line, I'm planning on getting 720 primaries with 1600 secondaries. Is this too much for running what I'll initially be running? If so, will the E6K take care of it?

 

with the stock exhuast I wouldn't run over 8 or so. the turbo will just get way to hot and over stress itself if you go over. get a down pipe and an exhaust.

2x720 and 2x1600 is probably good for around 700hp. a stock turbo won't make 300...

 

what year of car are we talking here. If its the 5series turbo I think you could run a little more than 8 and be safe if its the 4series then 8 if prob the limit. 8 is really fun though. I hit 10 on the stock turbo sometimes, but I have other goodies, and thats natural boost.

 

720 primary / 1600 2ndary is WAY too much for the stock turbo and intercooler