Another Stock Block Mazdaspeed 3 making 400+ WHP and this one belongs to Jerome Martinez. This 2012 MS3 has the new BNR Supercars LLC BNR S4v3 turbo and is tuned on both 93 octane only and 93+Methanol Injection. Jerome had a specific request for the car to make around ~350 WHP on 93 octane only for daily driving purposes and then tune the car to 400+ HP with the AEM Performance Electronics methanol injection system turned on so we delivered just that. I stopped at 442 WHP / 385 Ft-Lbs with 26 PSI peak boost pressure since this is the owner's daily driven vehicle and didn't want to push it any further. One thing I was really happy to see about this BNR S4 v3 turbo is that it looks to have another 30 HP still left in it over the S4v2 which is exactly what Bryan calculated. Sure, I could have turned it up even more and established where the S4v3 maxes out at but I'll never experiment on a customer's car who's not willing to take the risk. Who wants to tune their BNR S4v3 with a built engine??? These new BNR S4v3 and S5 are proving to be some badass next gen turbos!
