[s346k]

i haven’t. im now using a green filter with an unmodified stock box. seems ok.

i do know that my car with a stock cut air box was not happy. paper filter, green filter, did not matter. i also know simply removing the paper air filter from a stock unmodified box upset it, as well. the car lost 4 mph in the 1/8 alone just by removing the air filter. it idled noticeably rough and sputtered and jerked the car around when driving, especially when trying to hold say 2k rpm in 5th gear.