Originally Posted by Airboy
Have you collected fuel trim data to see where the resonance has shifted to? I guess the extra flexible hose also absorb some of the pressure pulses.
There seems to be some smaller fuel corrections around 3200-3400 but only about 10 percent or so on 1 car. A car with the stock airbox was less.
also a car with id1000s and intake saw no issues and I left the EL Comp pretty flat.