I have a B18A1 LS motor that is completly built. Eagle H beam rods Eagle crankshaft JE/SRP pistons with a compression ratio of 9;2;1 Dart block custom port and polish ferrea 1mm stainless oversized intake and exhaust valves crower 404 cams and crower dual valve springs! I am using nitrous at this time running a 175hp direct port system made by speed tech i have used a 200hp before but it is just to much ! the motor made 311hp and 276lbs of torque on a 175hp shot ! i want to get the nitrous off the motor not because it has hurt anything because it hasent but i want to turbo it i have never used a turbo but the reason i want to try it is because the nitrous make the power all at once and it makes the car spinn really bad at the track !!! hew do you all recommend that makes a good turbo kit i have looked at a few but have not really talked to anyone that used the kits that i have looked at and how much boost can i run with the compression i am runing!!!

 

Turbo it bro, get a T3/T4 with like .63AR/60trim, and leave a 50 shot of nitrous on the motor and you will have easily 400+hp. I'd say go for it, and use the NOS as well.

 

And everyone will tell you not to focus on PSI, but your HP goal. So with that say, if you want 400whp, then it depends on your turbo, and how much nitrous you run, but with your motor beefed up, you could do it under 18psi with nos. But there's some many variables