I want to do a full turbo upgrade on my tt but was wondering about the lag compared to stock. You guys running singles with 650-850rwhp , how is the lag on the street.I know the roll-on acceleration is good but how is the acceleration from a stoplight or at low speeds. I want good road racing accel +low speed accel . Is it possible. Is it bearable,how is the spoolup compared to stock. Is it better to go single or twin.