Been fighting to get reasonable progressive throttle control and driveability with my 2014 A6 Mustang 5.0 with edelbrock track blower kit (stock throttle body). I am not an experienced tuner on this platform so I tried the usual mapping and been playing around with torque mapping, driver demand, etc. Worked on it for a year and had no problem making power and some improvement, but was always chasing some surging at part throttle and non linear throttle pedal.
Looking at OEMs they generally use a control solenoid between vacuum source and the blower bypass valve. I found that my car drove like stock with the bypass valve on the blower open. So I played with check valve and bleeds for awhile but it was always throttle response or driveability, never both.
Some creative use of a progressive nitrous controller, a small vacuum tank and a turbocharger wastegate control solenoid was the answer. Instant response when I mash the gas, progressive boost starting at 50% TPS (or whatever I set it too).
Drives like a stock gt500. Love it.
I also used the second stage of the NOS controller to run vacuum operated exhaust cutouts on my quad tip exhaust (my own version of active exhaust).
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Originally Posted by MRRPMBRP
