Originally Posted by Big AL
Does that mean it'll just sound different? I can't see how performance would really be affected. One thing's for sure, my F23 performs much better with a CAI than it ever did with an SRI. The J30 probably has enough torque as is so an SRI would not affect it the same as it does on the F23.
No.
Ever close the faucet on the sink of an old house, and the water in the pipes goes 'BANG BANG BANG'? That's called the 'water hammer effect'. Same effect in engines, but it's referred to as 'resonance length'. If the distance (or more accurately, the volumetric flow rate of air) between the cone air filter and the intake valves isn't just right, you get air piling up behind the intake valves and creating excess turbulence instead of smooth air intake. Get it? That's why SRIs in the J30A1 gain power power than CAIs. The temperature difference is negligable.