I had the TRD CAI on my wife's 2010 xb. There was a definite mpg loss of about 2. More power more fuel right? Although, I did love the engine sound from the TRD and loving the engine sound from the weapon R for the IQ. Very tempted.I am suspicious of the 5hp claim. There was a show online recently that compared stock air boxes with cone filters and what not and found them to actually lose power.
ai17828, do you think there would be mpg loss if the engine creates more power?